If something like this has been done I apologize - it was nothing I could find in a search. Something that’s alive and well over on snipers hide that I think would be cool for the 450 peeps. Would like to see what people are finding in accuracy loads for the 450. Any and all bullets, primers, powder, guns, barrels, etc. Any readers be very aware that what is good or safe in one gun might not be good or safe in yours and any load mimicking will be done at readers risk. Some powder charges may be above manufacturers recommended max charge. I think we are all adults here and should go without saying, but any of these should be worked up slowly while checking for pressure signs the entire way. I’ll start with with one I worked up that was 1/2 MOA out passed 250 yards and well under 1 MOA @ 400 yards (bipod and squeeze bag with Giessele SSA trigger)
Factory Bushy Upper 16” 1:24 BBL
Hornady 250 Grain FTX Bullet
CCI BR-4 Primer
38.6 Grains Lil Gun
COAL - Copied Factory Hornady Loaded Ammo (and crimp dia)
2275 FPS (ran over a magneto chrono)
I just picked up a Christensen Arms Mesa in 450 (20” 1:16) and can not wait to get some load development rolling for it. Hoping it likes what or similar to what that AR shot so well.