Gas system questions

[Mtkrusmark]

So to start this out I have a DPMS LR308 with a custom x caliber 16" 1:8 twist.308 barrel with a mid length gas system using a jp adjustable gas block. I do shoot this suppressed and unsuppressed, supersonic and subsonic loads. I have the factory bcg and a stock buffer and spring.

my issue if you would call it that is the screw on my gas block is about 1 thread left in the block in order to get enough gas to cycle the bolt unsuppressed supersonic. when I throw the suppressor on it it is a little bit over gassed. subsonic loads dont have enough gas to cycle which isnt a huge deal but if I could I would like it to cycle subsonics as well (I know it would be a different adjustment than supersonic bullets).

I'm wondering what buffer and spring you guys would use? would using a lighter bcg that adjustable help this issue? I looked up on maybe opeing the port diameter on the barrel to get more gas but I didnt know if I should or not?

im wanting the gas block screw to be in the block more and be able to adjust the gas for every type of load I'm running if I can

thanks

 

[C_R_Slacker]

Hmm...I'm no expert on 308 gassers, but what you are describing may not be doable. I think the root of the issue may be that you need a longer gas system than mid length. But, that may not allow you to cycle subsonic loads unsuppressed. If there is any way to make it all work, i would guess that it would be with a variable mass carrier from jp, and maybe a jp silent captured spring too. You would be able to adjust spring weight, carrier mass, and gas from the gas block. Some combination of those things would probably work for what you are trying to do, but you're going to have to be adjusting stuff all the time for each load and suppressor combination.

Also, by the time you buy an adjustable mass carrier and silent captured spring from jp, you could put a big dent in the price of another dpms 308. Have one set up for subs and one for supers. Anyway, might not have been too helpful, but hopefully it gives you something to think about.