Powder burn rate options

[Fasthenk65]

14,5 barrel

JP tactical comp

Red Sprinco Carbine spring

Blitzkrieg (short stroked with buffer / extension)

124 gn RN Frontier

4,05 / 4,1 gn Swiss Reload RS12

PF 130 at normal temperature / PF 134 when hot

 

Best regards!

 

[Chillywig]

On 8/10/2020 at 5:43 PM, mrd said:

 

Do you mind sharing the full spec: barrel length, load data, buffer spring and Blitzkrig model?

 

I think all these factors must be in tune for the gun to flatten out. Once we can see some recipies for flat shooting setups we can start to understand how to make the PCC's shoot flat without having to test everything.

Did you ever do any experiments or decide a comp is better than no comp for muzzle rise?

[mrd]

7 hours ago, Chillywig said:

Did you ever do any experiments or decide a comp is better than no comp for muzzle rise?

 

I did some experimenting, but I have moved on to other projects for now. I have the rifle set up the way I want now and the next thing to test is to make a powder ladder and see what load shoots the flattest.

 

A comp makes a difference, with a 16" barrel the difference is small but noticable. I have had my barrel cut down to 10" now and the rifle shoots softer and the comp works better.