Well, it was me stressed actually, the .308 didn't flinch. I flinched a lot. I took the .308 RPR and .45 ACP back out to the rifle club to try again. I had re-pressed 50 ACPs to be 0.1" shorter, to help them feed. Meh. It didn't work. Jamb after jamb. As I was tweaking the new .308 scope, my spotter was giving me strange info, and I made lots of holdovers that never worked. MEH! I was tearing at hair I don't have anymore. It turns out I didn't quite understand how this rifle shoots at 50 yds with that 20 MOA cant on the rail. In addition I was starting with some light loads which drop fast. I didn't depress the scope enough and was shaving lead into the top layer of the 100 yd berm, spraying pea gravel up thru my target. I didn't realize this and I was going nuts, as my shots were seemingly going random places. Anyhow I wasted a lot of ammo until I walked the range to check the target. At that point I had 8 shots left. I finally put 4 reasonably on target at 100 and 4 finally on paper at 200 yards. I scored a near bullseye on the last shot of the day, which was some relief. I shot 80 .308 handloads total but was really stressing out, after putting 2/3 of them in the dirt! Match grade lead too ;( The .45 loads I made wouldn't feed well, and I think it has everything to do with the bullet profile and the magazine lips. I didn't mess with them as I was pooped at that point. Finally I had an awful time getting eye relief. I need a taller scope mount. Also the ambi safety pokes me in the web of my thumb. That's gotta come off. By the last shots I was not using the pistol grip at all. I'm amazed I hit anything at 200+ yds.