***************Nevermind. I found the thread*****************
***************Nevermind. I found the thread*****************
President of Trigon Armament Inc.
FFL-07 SOT-02
AR-15 Armorer
Competitive Shooter
I had an M4A1 upper and it was a gasser for sure.
I posted in like 2012 that DD barrels were overgassed. I remember many people not believing me. That was a 12.5" but like seen already in this thread, if we all (now) know that some DD barrels are overgassed, why wouldn't you assume all are?
OP short answer is yes.
Long answer is 95% of people would never notice. Even most suppressed users wouldn't notice. Doesn't make it right, just how it is. If you own a DD barrel, turn back away from this thread, for most, ignorance is bliss.
Yeah, I remember reading about someone shooting a V11 and thinking it was overgassed. Not sure about that. But I'm a fan of DD. That won't change. They're certainly one of the best manufacturers.
I have a V7 w/ H2, regular power buffer spring. Normally running Wolf Gold and works great, but will usually not cycle steel case at all, much less lock back. I'll bring some random low-power brass .223 next time and see what happens.
I know ejection patterns aren't everything but our 16" DD midlength lightweight factory upper ejects to ~4:30 with our 75gr handloads and a H buffer. With a suppressor it ejects to about 2 o'clock. Here's a video shooting some rounds unsuppressed and suppressed with a TBAC Ultra 7" and you can see the ejection pattern:
FWIW it shoots great and we've gotten decent hit ratios at 907 yards on torso-sized steel with it and 75gr Hornady BTHP handloads.
Last edited by californiasushi; 02-20-16 at 04:08.
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