I've mentioned in a couple of other posts that I recently purchased a 110 in 7mm Rem Mag for the purpose of making it a long range hunting and target rifle. I bought the gun at a pawn shop cheap. The first ever group out of the gun having done nothing to it but clean it was about 0.7 inches. That was with cheap Prvi Partisan 175 gr. I bought that just to get it sighted in and was pleasantly surprised. Maybe I should have just left the rifle as is.
I bought a B&C medalist classic and a steel trigger guard. The stick required a little sanding in the barrel channel but not much. The barrel is fully free floated. I also sanded away at the tang area and the tang is free floated. Based on what I've read here I torqued the action screws to 65 lbs. The current trigger is heavy (I'm guessing 5-7 lbs. but I don't have a trigger scale). The scope that came on it isn't much (Bushnell Banner 6-18x50).
I hand load and loaded some 139 gr. Hornady BTSP that I thought would be good hunting bullets over different weights of IMR 4064 ranging from 54.0 to 56.0 gr. Yesterday I shot them all. I didn't even bother measuring the 5 shot groups. The smallest one was probably 2.5 inches and the largest was probably 4 inches. I was shooting from a bench off sandbags. All of the shots felt good.
I have no idea what happened to this rifle. I could chalk it up to just not liking those loads or bullets. I know that 4064 isn't an ideal powder for that cartridge but I just can't believe it would be that bad. So - HELP! Any idea will be appreciated.