Print Page - More 1377 chrony data

Title: More 1377 chrony data
Post by: burnt09 on March 06, 2012, 09:09:36 AM

Some more chrony numbers from my stock 1377. I didn't bother recording group sizes. Just too darn small.

PMPS: number of pumps
AVE: average velocity
ES: extreme spread
SD: standard deviation
FPE: foot-pounds energy

RWS Superdome (8.2gr)

PMPS AVE ES SD FPE
4 399 12.1 4.4 2.9
5 439 13.4 4.4 3.5
6 463 6.4 2.2 3.9
7 486 5.6 2.1 4.3
8 509 5.7 1.9 4.7
9 520 8.7 3.2 4.9
10 535 7.3 3.1 5.2

Title: Re: More 1377 chrony data
Post by: quickster47 † on March 06, 2012, 01:36:24 PM

Good numbers there. Was each pump group 10 shots or some other number?

Carl

Title: Re: More 1377 chrony data
Post by: 1377x on March 06, 2012, 06:47:13 PM

nice numbers with the heavier pellets
its great hearing about the group sizes.gotta love those crosmans

Title: Re: More 1377 chrony data
Post by: arkmaker † on March 06, 2012, 08:13:43 PM

Looks like 8 pumps should be your target shooting standard. :-*
I came up with very close results when wearing a .177 barrel.

Title: Re: More 1377 chrony data
Post by: burnt09 on March 07, 2012, 05:24:14 AM

Quote from: quickster47 on March 06, 2012, 01:36:24 PM
Good numbers there. Was each pump group 10 shots or some other number?

Carl

5 shots. I don't want to get too muscle-bound. ;)

Title: Re: More 1377 chrony data
Post by: quickster47 † on March 07, 2012, 01:47:40 PM

Quote from: burnt09 on March 07, 2012, 05:24:14 AM
5 shots. I don't want to get too muscle-bound. ;)

I can appreciate that. Never did understand some pumping their guns 30 times. Whew... by then you're too tired to steady the gun.

Carl

Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: burnt09 on March 06, 2012, 09:09:36 AM