7mm German Mauser
My buddy has a WWII German Mauser in 7mm. It has been sporterized. Don't ask me or make all the silly comments about why the heck he is shooting something like that with all the up-to-date guns on the market today. I have asked this question a 100 times and he has other more modern rifles in his gun cabinet, and it surely isnt a matter of not having the cash because he surely does, he just plain and simple will not change what he shoots. The gun is heavy as heck and awkward in my opinion and the doggone gun should be retired, however he won't do it. So here is the issue he and I are saddled with.
About a month ago, he picked up the gun after having issues with getting it "sighted in" and I went to the range. We checked the scope mounts, and the rings, but it was shooting all over the board at 25 yds and 100 yds. So I had him switch scopes, to a brand new one right out of the box. This time I attached it and double checked it. Then I noticed that 1 out of every 10 casings were split. He is using 145 grain Winchester Super X bullets. On top of this when he shoots at 100 yards he will fire 3 shots in a row, the first shot will be 8 inches left and 10 inches low, then the 2nd usually 4 left and 4 low and the 3rd will be close if not right in the bullseye. After watching him shoot like this 12-15 shots per day for over a week, yesterday I decided to try my luck. I only fired two shots. The first shot was about 8 and 8 low and left and then my 2nd shot was an inch high and perfect L to R. I suggested we try either Remington or Federal ammo as my Weatherby shoots different depending on ammo. We talked to a dealer yesterday who specializes in sales of these "older" rifles and he stated that the split cases could be bad cartridges from Winchester or else the chamber could be going south considering this was a war used rifle and the potential number of shots could have worn out the chamber. Have any other shooters had this issue with these WWII rifles? On the up side he is finally considering other guns!
Only the owners of a GSP would truly understand, "If I fits, I sits".