I know a lot has been posted on the 91/30 but I'm havin some accuracy problems with a 1942 Mosin and can't figure out the problem.
I had it at the range this week and couldn't hit paper at 50 yds no matter what ammo I used. Even had one shot hit almost 3 feet to the left of the target, yikes!! So far I've tried a 100 grain .311 plinker over 5-6 grains of Bullseye or Greendot which is my go to load for both 30-06 and 7.7 Jap, Military light ball which is steel cased, and two different hand reloads both using a .311 150 grain spitzer over either IMR 4350 or H4895. The IMR4350 load and H4895 load are from midrange 7.7 Jap loads taken from Speer #9 reloading book and work in both my Arisakas. After shooting about 5-6 rounds of each type of I decided not to waste any more ammo and put the 91/30 back in it's case.
The bore is a little rough and slugged out to .311 with no fat spots and has been counter bored at the muzzle and from what I can see it should be a decent shooter. So far I've scrubbed the bore with a bronze brush and given the rifle a good cleaning. Yesterday I clamped the rifle on a bench and bore sighted it, it was off just a little but not enough to be off paper at 50 yds.
The only thing that I could think that might be wrong is that when they did the counterbore the crown of the muzzle wasn't done properly and is affecting the slug as it leaves the barrel. Has anybody ever heard of a bad crown with a counterbore?
I know it is only a Mosin but it is starting to get on my last nerve, any ideas as what to do next?
Thanks
Ed