Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: vertguy on September 05, 2013, 02:03:20 AM

Title: Modding my PC77 has begun
Post by: vertguy on September 05, 2013, 02:03:20 AM
Now that I had some time (~1 week) of getting to know my new PC77, think I have my modding plan figured out. Per my intro post, I started out kind of crazy with ordering a bunch of mods without even having the gun yet. Luckily many of the those vendors are very slow to ship, so I had time to rethink my approach and cancelled the orders with Cothran and Mellon Air. But I do still have walnut grips/pump arm getting done by RB grips (hopefully those will be done next week).

Although I have not started plinking critters in the yard (yet), the couple little mods I completed have made a huge difference with my accuracy that include a Crosman steel breech and LPM mim rear sight, Archer super sear, and Mac1 trigger spring and longer bolt handle. The washers that came with the super sear removed the remaining trigger slop (which was actually not bad out of the box).

I almost ordered a DBO kit, but changed my mind and just decided to mess with 1 gun (for now). Next up is a longer barrel from some place like BnA as I want to stick with .177 cal along with the other required parts (2289 barrel band/screw & fiber optic front sight) and some type of removable stock. I really like the Mellon Air stock adapter, but not willing to wait 3 plus months right now. So I may just get a Backpacker style and order the Mellon with a Tippman adjustable stock later.

When ordering the required Crosman parts for the longer barrel, I may go ahead and get a 2250 barrel just to have that as an option. This is probably covered elsewhere in the forum, but does Crosman sell a 22 cal bolt for their steel breech seperately?

Amazing how I went from reading Mustang forums all the time and looking for ideas for the car... to now being totally sucked into these little guns. But it is nice to have something new to mess with, which is also much cheaper to mod than my car :-*
Title: Re: Modding my PC77 has begun
Post by: bgmcgee on September 05, 2013, 02:25:05 AM
Bitten by the crosmaniac bug. Cool deal on the first mods.  Check with bluefork about a barrel band and stock adapter. I have his wire stock and it is nice not sure if you want to go that route though. Highly recommend the barrel band much nicer than the Crosman band. Check hpasports website for some parts too Joe ships quick.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 05, 2013, 02:33:15 AM
I looked for the Bluefork stock adapters, but they are currently out of stock and I don't see a listing for a wire stock (which is really what I want). And you are right about their barrel bands and other parts like the muzzle brakes as it would look a ton better than the Crosman plastic.
Title: Re: Modding my PC77 has begun
Post by: chongman on September 05, 2013, 03:17:05 AM
You should go direct to bluefork if you want a wire stock.  He's a member of the forum. Search members and from there you can email or pm (email probably better, pm box may be full).

Someone should be around to give you a part number on the Crosman black steel bolt probe.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 05, 2013, 03:30:01 AM
I just saw one of his FS ads and sent an email about the stock and adapter... Thanks.

Title: Re: Modding my PC77 has begun
Post by: Colt25 on September 05, 2013, 03:30:42 AM
WARNING: Once you mod your 1377, you'll never stop.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 05, 2013, 04:54:36 AM
Agreed. The more I look at sites like blue fork, the more mods get added to the to do list like their trigger assembly along with a rubber Hogue rubber grip.
Title: Re: Modding my PC77 has begun
Post by: brz-ryder † on September 05, 2013, 05:27:59 AM
Check here on the forum for the part no. for your barrels they are cheaper then most places unless you have a length the isn`t listed

Jim
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 05, 2013, 05:52:31 AM
I have the p/n for the 2250 barrel (2250-019) and I assume they can be picked up fairly cheap from many vendors. But from my research, I will need a barrel custom cut/crowned to get a .177 at 14 inches.
Title: Re: Modding my PC77 has begun
Post by: brz-ryder † on September 05, 2013, 09:59:57 AM
One thing i forgot to say was check out Ebay some times you can find barrels there for a so-so price , I didn`t go thru the whole site this evening didn`t have the time but seen one 24" ,177 barrel i have seen 14" 14,5" one on there for descent prices

Jim
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 05, 2013, 06:28:55 PM
best price for the 2250 barrel or any factory length barrel is going to be directly from crosman. the custom length barrels are going to range in price depending on where you go
iirc i get barrels cut and crowned any length for $20/otd
cant say for sure who has the best prices on the web or who does the best job
when muzzlemack was doing custom length barrels i would say they did the best job with the best prices liked the crown they used tp put on them. now ??? idk
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 06, 2013, 02:11:06 AM
I have been watching eBay and did find several 24 inch .177 cal barrels, but nothing else aside from the stock 10 inchers. So I will more than likely just order one from www.airgunbna.com (http://www.airgunbna.com) along with getting the 2250 barrel direct from Crosman. I still need to find the Crosman p/n for a steel 22 cal bolt as they are priced stupid expensive on eBay ($22).

Greg from BF does have the wire stock and adapters available, so I will be ordering one along with a barrel band tonight.

Thanks for all the input!
Title: Re: Modding my PC77 has begun
Post by: brz-ryder † on September 06, 2013, 05:16:32 AM
sorry can`t find the .22 bolt from Crosman had the .177 number

Jim
Title: Re: Modding my PC77 has begun
Post by: brz-ryder † on September 06, 2013, 05:25:06 AM
Found a .22 bolt i`ll send it out with the rest

Jim
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 06, 2013, 05:57:38 AM
Quote from: brz-ryder on September 06, 2013, 05:25:06 AM
Found a .22 bolt i`ll send it out with the rest

Jim

Thanks Jim!

Title: Re: Modding my PC77 has begun
Post by: vertguy on September 06, 2013, 07:31:33 PM
Several more orders completed today including a hpasport Tippmann 98 stock adapter (they just showed up as available on their website this morning) along with a Rap4 98 adjustable stock from ANS gear ($14 shipped).
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 06, 2013, 07:47:29 PM
cant wait to see this gun
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 06, 2013, 08:30:27 PM
I am looking forward to it as well. Another order placed with Crosman for the 2250 barrel, barrel band & screw (billet version out of stock at BF, so this will be interim), backpacker front stock and a 2300 muzzle brake for a grand total of $39 shipped. As most others have stated, they were great to order from. Now the wait begins...
Title: Re: Modding my PC77 has begun
Post by: chongman on September 06, 2013, 09:49:30 PM
Quote from: vertguy on September 06, 2013, 08:30:27 PM
I am looking forward to it as well. Another order placed with Crosman for the 2250 barrel, barrel band & screw (billet version out of stock at BF, so this will be interim), backpacker front stock and a 2300 muzzle brake for a grand total of $39 shipped. As most others have stated, they were great to order from. Now the wait begins...

Go to the HPA Sports web store, register, and click the box to be notified of new products and news.  This will get you an email when BlueFork stuff is newly available. The emails also tell you how many are in stock so you can decide if you can afford to wait!
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 08, 2013, 06:51:09 PM
After exchanging a couple messages with Greg at BF, he hooked me up with a barrel band along with an aluminum stock. Now I just need to patiently await the delivery of all these parts!
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 08, 2013, 08:05:36 PM
in the mean time you can get baseline testing done
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 09, 2013, 04:21:12 AM
Quote from: 1377x on September 08, 2013, 08:05:36 PM
in the mean time you can get baseline testing done

Agreed and finally had some time tonight to do some more sighting in with the new LPA rear sight. I am either tired today or my glasses prescription needs updating as I was having a tough time using the open sights (another fun aspect of aging).  Only a handful of my shots were "acceptable". But then again I am very rusty at shooting as it has been many years since I squeezed off a shot.

If my focusing issue continues with the open sights, I am moving to a red/green dot sight scope (which I ordered today). I assume the longer barrel swap should also help... Along with continuing to get some practice. If nothing else, this gives the annoying burrowing critters in the yard a temporary reprieve!
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 09, 2013, 04:13:49 PM
as the old saying goes practice makes perfect
once you the feel of a gun shooting it gets easier
the other day i was at my mums house. there was a nutter scurrying about the roof,it wouldnt sit still. i pulled out my trusty red dot sighted 1377 took aim on my moving target pfft, twack, stop, drop and roll right off the roof. with a thud it hit the ground the ghost was already gone
thats the thing i love about red dots moving targets are so easy to dispose of. i use mine both eyes open. the one thing i hate about red dots or at least the millet sp-1, no auto off. i forget to turn the dot off then the next time i go to use it, it is useless GRRRR!!! i wasted a brand new durracell in week using it only 3x. these batteries are not cheap unless i go to micro center
moral of my tale is remember to turn off the dot ;)
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 10, 2013, 04:46:54 AM
Quote from: brz-ryder on September 06, 2013, 05:25:06 AM
Found a .22 bolt i`ll send it out with the rest

Jim

I came home tonight to a mailbox that was full of mods including several parts that Brz-Ryder sent unsolicited after reading my plans. It is great to see a community where folks do little things like this... Can't wait to return the favor!!!

Too late tonight, but I plan to add the new stock adapter and Rap4 stock first thing after work tomorrow. Hopefully one of the new barrels will be here shortly as well.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 11, 2013, 03:57:32 AM
Thought I would do a quick install of the BFD stock adapter and squeeze off some shots with the new set-up tonight... not. Having issues now with the bolt not fully cocking the hammer. It seems like the tolerances are much tighter with the adapter verses the stock plug as it works with both mounting bolts slightly loose. But as soon as I tighten them fully, it cocks once or twice before the issue resurfaces. I also noticed the adapter is hitting the back edge of the steel breech and after a quick measurement with a caliper, I confirmed the BFD is exactly .001 larger... so the adapter will not sit flush with the back of the gun (only cosmetic, but not acceptable). I plan to drop BFD an email tonight.
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 11, 2013, 04:17:30 AM
i think the stock adapter has a power adjuster in it. if it does it turned in to much? that will cause the problem you describe. just back it out and cocking should be fine
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 11, 2013, 04:37:18 AM
No power adjuster with this version, but I will try your recommendation in the other thread and will cut a couple coils off the spring. I even noticed some issues when testing with the stock plug, so it would appear the current spring length is right on the edge of being too long.
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 11, 2013, 05:03:34 AM
does it have a spring guide?
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 11, 2013, 05:09:13 AM
Yes as it has a recessed area for the spring just like the stock plug.
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 11, 2013, 05:48:40 AM
the spring guide adds a pee-load to the hammer spring, cutting a coil or 2 off should help or try it without the spring guide first
Title: Re: Modding my PC77 has begun
Post by: bgmcgee on September 11, 2013, 01:26:22 PM
When I bought one of bluefork's wire stocks the adapter didn't fit right either. Greg mocks them up with his breeches which doesn't have the little overhang in the rear. I contacted him and he made it right quickly.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 12, 2013, 02:01:40 AM
As everyone has stated, Joe at BFD is super responsive and is working with me on getting this resolved.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 13, 2013, 05:17:39 PM
Joe is making a couple tweaks to another stock adapter and sending it out. I guess mine was the first one with the new design that was shipped and the feedback from my fitment/cocking issue will be incorporated into the new specs.

Many goodies showing up as my B&A barrel is out for delivery, walnut RB grips arrived yesterday and my Crosman order is in route as well. Lots to play with this weekend!
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 13, 2013, 07:09:13 PM
sounds like you have your hands full
gonna be a fun weekend
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 15, 2013, 01:17:56 AM
Lots of honey do's on the list today, so all that I was able to complete was the quick swap of the frame grips with RB's... wow, what a difference in how these conform to your hands compared to the stockers. Next up is the longer barrel and matching pump arm. The B&A barrel does have the small mounting divot on the muzzle end, but the crown looks good and I plan to run some type of muzzle brake so it will be covered.

I also have my first "critter kill" today as the little digger that was in the fire pit making a mess there and in the garden stuck his head out 1 time too many. I was a bit surprised the first head shot did not take him out, so I had to pump another one into him to finish things off. I am using Crosman Destroyers, so maybe something a little bit more aggressive is in order.
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 15, 2013, 04:34:17 AM
i have used destroyers on nutters they work pretty good imo
if you want proven pellets try predator poly mags they reign supreme imo
it was probably already dead but didnt know it yet. plus around this time of year these critters seem to go into zombie mode
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 24, 2013, 04:46:11 AM
Since I wanted to limit tear downs, I waited for my recently ordered o-ring style pivot pin to show up along with the BFD barrel band before installing the 14 inch .177 cal barrel. After a quick run through the pivot pin hole with a 3/16 drill bit as there was just a touch of misalignment, the new pin slid right into place through the BFD barrel band (sweet piece BTW!). With the donated fiber front sight installed, I headed to the basement for some dialing in.

Man, what a struggle trying to get a decent grouping. My windage was spot on, but elevation was a major challenge. I finally started getting a small number into an acceptable grouping (everything was low), but either my vision is that bad or it is time to change up to the new UTG 30mm Red/Green Dot Sight that I picked up last week from Optics Planet. But since everything was almost in a straight vertical line and I would get every 4th or 5th shot around the center, it is probably the shooter more than anything :o

Enough fun for the night, but here's a couple pictures of how it sits now. I also picked up 2 different style stocks (HPASport stock adapter & BFD wire stock), but for sighting it in I am having better luck just laying the pistol across a table.

(http://i720.photobucket.com/albums/ww209/doogie65/Newbarrel_zps35a9de6e.jpg)

(http://i720.photobucket.com/albums/ww209/doogie65/Stockoptions_zpsdb2ff9b0.jpg)

Title: Re: Modding my PC77 has begun
Post by: bgmcgee on September 24, 2013, 12:19:11 PM
Very nice. That's. a clean look you have going there.  :-*
Title: Re: Modding my PC77 has begun
Post by: KevinP on September 24, 2013, 01:31:49 PM
Looking nice !!!   :-*
Title: Re: Modding my PC77 has begun
Post by: 1377x on September 24, 2013, 05:27:21 PM
wow!
good job on the furniture!
looking good!
Title: Re: Modding my PC77 has begun
Post by: onebaddj on September 24, 2013, 05:38:06 PM
thats a nice looking build you have going. cant wait to see the finished product.

on them nutters they can be surprisingly tough. i only have 1 airrifle i call zombie proof and thats my 22 cal 350 mag with vortek kit in it.

scariest thing on earth would be a 300lb squirrel.
Title: Re: Modding my PC77 has begun
Post by: mudduck48 on September 24, 2013, 06:24:05 PM
Quote from: onebaddj on September 24, 2013, 05:38:06 PM
thats a nice looking build you have going. cant wait to see the finished product.

on them nutters they can be surprisingly tough. i only have 1 airrifle i call zombie proof and thats my 22 cal 350 mag with vortek kit in it.

scariest thing on earth would be a 300lb squirrel.
How about this one?(http://i1059.photobucket.com/albums/t437/mudduck48/8869bb86-a639-46df-bd90-94cbccfb4f9a_zps08ff9cb6.jpg)
Title: Re: Modding my PC77 has begun
Post by: onebaddj on September 24, 2013, 07:03:06 PM
lmao! that is a fat squirrel.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 25, 2013, 12:37:40 AM
Thanks for the compliments. I have to say this gun is coming across nicely and by far one of the best mods are the RB grips. I was originally wanting to go with an all black look, but there is no way I am removing these new grips. But I did muff up the finish and need to do a little repair as I ended up allowing the punch to slip off when driving in one of the pins. I need to drop Ralph a note to see what kind of finish he used as I want to replicate it once the repair is complete.
Title: Re: Modding my PC77 has begun
Post by: onebaddj on September 25, 2013, 01:38:40 PM
dang that stings. sounds like my kinda luck. get something really nice and in the blink of an eye, pop theres a beauty mark on it. hope you get it all dressed up again. on a good note the first ding is out of the way. kind of relieves all thr stress of cradling it and trying to make sure is protected at all times to prevent the first scratch.
Title: Re: Modding my PC77 has begun
Post by: vertguy on September 25, 2013, 11:17:47 PM
And considering I saw a thread where someone else did the same thing when installing these grips and thought I was being cautious. Oh well, part of the fun. More props to RB Grips... Ralph's customer service focus continued to shine as he promptly responded to my request about the type of finish he used so I can replicate it once the repair is complete. And after a quick search, I found a fairly local wood working supply shop that has it in stock :-*
Title: Re: Modding my PC77 has begun
Post by: BDS on September 26, 2013, 12:00:33 AM
Too late to help but, next time, I always protect the area around the roll pin holes with a piece of shim stock held on by blue painters tape. The shim stock has a .125" hole in it for the punch. Has saved me lot's of "skid marks" over the years.

PS that gun deserves a 2x pistol scope like a BSA Edge, I have one on my 2300 KT and I have to TRY to miss the same hole in the target at 10 meters.  :-*
Title: Re: Modding my PC77 has begun
Post by: vertguy on October 01, 2013, 01:50:57 AM
I finally had some time to sight in the new UTG Dot scope... all I can say is WOW!! Not sure I will ever go back to open sights as this made all the difference in the world to my accuracy!! I am getting groupings the size of a quarter at 20 and 30 ft.

Several had asked me about the sighting using this stock adapter and I think the new offset design helps as my cheek lined up nicely looking down the scope.

(http://i720.photobucket.com/albums/ww209/doogie65/PC77withscope_zps4708d610.jpg)
Title: Re: Modding my PC77 has begun
Post by: vertguy on October 01, 2013, 02:12:53 AM
I can't wait to see some critters sunning themselves!

The scatter on the left were my sighting shots... then things were grouping nicely after a couple windage tweaks as I started with the lower left target and worked around counter clockwise with groups of 5.
Title: Re: Modding my PC77 has begun
Post by: 1377x on October 01, 2013, 02:17:57 AM
not bad
Title: Re: Modding my PC77 has begun
Post by: vertguy on October 01, 2013, 02:26:35 AM
Considering the scatter I was generating with the open sights, this was a huge improvement. And for a guy that has not shot a gun in >17 years, I am more than satisfied. Now I can get some real practice in and tighten those groupings a bit.
Title: Re: Modding my PC77 has begun
Post by: 1377x on October 01, 2013, 03:49:18 AM
sounds like you are going to be stretching it out.  @25 yards the dot gets huge and covers the bull if not the whole target, 20yards is pushing it imo. the smaller moa dots are better if trying to go past that. in the dark its worse, outside it will appear smaller the brighter it is outside the smaller the dot looks
cant wait to see what you do keep us posted :-*