FPS on American Classic

Started by WhisperRidge, July 21, 2011, 05:36:56 AM

0 Members and 1 Guest are viewing this topic.

WhisperRidge

I was wondering if the advertised 600 fps was after 10 pumps? does anyone know how many pumps produce how many fps..etc?

1377x

with a stock 1377 about 15x or use a 4gr pellet 10 should do it
most shoot 525-550fps 10x 7.9gr pellet
closed mouths dont get fed

Daysailer

#2
Here are my stock #'s with a 2009 and 2010 1377;

2010  RWS Basic 7.0 gr pellets
pumps..FPS
2.......298
3.......350
4.......391
5.......424
6.......453
7.......470
8.......491
10.....518

2009 same pellets
pumps..FPS
2.......308
3.......366
4.......412
5.......446
6.......476
7.......498
8.......515
10.....547

And here are a couple of links to the threads where I explain how I improved them
with fewest $$

http://www.crosman-air-pistol-owners-forum.com/board/index.php?topic=3688.0


http://www.crosman-air-pistol-owners-forum.com/board/index.php?PHPSESSID=1a96ceb76019c795c1bfc257a2339d3b&topic=4088.0

If you follow the links in the links, you will see these ideas have been used before
I found them in my research.

Have fun.....safely.


Adjust the wind, we cannot.....Adjust our sails (or windage), we should.

Smaug

Also, if you look up the manual for the first generation 1377 on crosman.com, you will see that this gun NEVER achieved 600 fps with a normal pellet. It was always in the 500 fps range.

Later generation 1377 manuals don't have the velocity numbers published.
-Jeremy
"If it's worth doing, it's worth OVERdoing."
Crosman 66, 1377, 2300T, 1701P / Daisy 1200, 953, & 747 / Stoeger X20 / .177 Marauder / Archer AR2078 / Weihrauch HW30s / RWS 56