Originally Posted By: steve garrettOriginally Posted By: yotehunter243Proof is claiming 3600 out of their 22" barrel. That's all over the heels of a 22-250 in a 24" barrel
NO, I ran almost 3900 with 50's from my 22" ruger mark 2. its simple case compacity you can't get around it. there is nothing magic here. GLS does have a point about bolt thrust and soft brass. IMO you need to be able to load up to 62kpsi and if you can't its really going to limit how great the 22 nosler is going to be. your always going to have 5.56 nato loading data out there that is loaded full house.
wonder if they could have made a grendel case the same length as this 22 nosler then used the rebated rim of the 6.8 case. I wonder how much case compacity a mythical cartridge like that would have.
You are almost 22 BR range on that one. The 22 LBC and the 22X6.8 are within a grain of each other. I wonder if stretching the case would cause feeding issues on the Grendel body. Probably not undoable but then again looking at 100,000 pieces of brass would be a bunch of money. If you can't supply the public with it it will be a boondoggle trying to recover the $$'s on it.
We are approaching the diminishing returns on the small bore AR's IMHO and while it is fun we can't hope for too any more ew cases to pop up. Darn it!! LOL Then again the Grendel with a 6.8 base is going to bring up bolt thrust again above the current Nosler offering. Performance is never free and you pay somewhere along the line.
Gteg