Originally Posted by Locknload
The Grendel will do 2,700 fps with a 120 gr Sierra and at or over 3,000 fps with a 107 Sierra.
I have been researching the heck out of the Grendel because I've been bitten by the AR bug and don't care for the 223 for anything more than yotes. I'm a bit old school, so I like MVs near 3K. But I have never seen/heard of 3K fps from a Grendel with 107s. That's greater than 243Win power, straight up. Never ever heard that, but interested. I would have built a 6.5G long ago if I knew that.
So my question is, what it the barrel length that gets you there, and what powder are you using?
Inquiring minds want to know!
Long barrels, 24"+ on an AR seem like an oxymoron to me, but that's just MYOHO.
The quest for an 18" - 20" barrel, 6.5 lb semiauto rifle with good knockdown power out to 400 yards is kind of what I'm looking for. I'd go AR10, 6.5 Crdmore but don't think I can get the weight down. At 9.3 lbs loaded, my 270 BAR with a 22" tube just destroys anything it hits at whatever distance I can hit them. Never had one take more than 1 step. Deer, yotes and hogs so far but no experience with elk.