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Does the powdered tungsten make an ST-2 perform like the heavier H2? I have no idea.
“ When I comes to modern politics, I think the inverse of Hanlon's Razor applies...In other words, "Never attribute to stupidity that which is adequately explained by malice." - Kerplode
If it helps I looked it up, the T2 is 4 Oz.
Almost all of this is going to depend on how gassy the barrel is along with the level of back pressure from your can. And as a warning, the majority of barrel makers are completely confused about how big the gas port for 300 blk should be.
Although I don't like the JP Silent Capture systems for 556 guns I think it can be super helpful with 300 blk. The recipe that we have found to work the best is an SLR adjustable gas block along with a JP heavy SCS. With the gun suppressed adjust the gas with subs to lock back and then give it one or two more clicks. From there you should be good to go with both subs and supers. If you are just shooting supers (no idea why you would do this) just use an H3 or an A5 system with a green springco and A5H2.
nawai
Black River Tactical
BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
BRT Bolt Carrier Groups M4A1, M16 CHROME
BRT Covert Comps 5.56, 6X, 7.62
I called LMT they say they use their standard carbine buffer in all their platforms. He said to just run it with the carbine buffer first and if I’m not happy with how it cycles or recoils then to go up to an H buffer but he believes the H2 would even be too heavy and could cause cycling issues.
.300blk can be a fickle mistress. You have four different combos to account for: suppressed supers, suppressed subs, unsuppressed supers, and unsuppressed subs. Then you have to figure out how many of those combos you want to run. Once that's settled, it's typically recommended to run the heaviest buffer you can that'll reliably lock back on the lowest backpressure combo you intend to use.
I know my 8.3" BA Hanson barrel with a SiCo Omega has a ton of backpressure. I used a BRT EZ tune gas tube to tame it a bit, but it'll still reliably cycle and lock back using suppressed subs with an A5H4 and Sprinco green, so that's what I run.
I tried both an H3 and H4 in my 9.75” PWS running an AAC Tirant 45 can and found no discernible difference using various bullet weights, all subsonic.
Before anyone comments, yes, it’s not the ideal can. It’s a boredom build that exists only because I had that stupid can lying around without a host.
I’ll give the carbine buffer a shot once I’m done with this build. I’ll be running my Surefire SOCOM 7.62 mini 2 can on this.
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