Scoped M/39- The good, the bad and the ugly

rimfiremac

Regular
Rating - 99.1%
108   1   0
Location
SOntario
Took a newly acquired M/39 with a PE scope to the range today to give it a whirl- the results of which I'm pretty pumped about.

I might try to pull together a full range report at a later date, but for now I'll just mention the good the bad and the ugly for comment.

The good: I used 180gr S and B to start off with, as it's non corrosive and .310 dia. The first three shots on irons at 100 yards yielded two shots touching and another landing nearby for a group of 0.91" ctc. Not too shabby for a '41.

The bad: I reload, hence when I was collecting the spent brass I had a look at the primers, and found that not only are all cratered, so to speak, but the entire primer strike area was raised in the 'wrong direction' relative to the firing pin dimple. I thought headspace might be an issue, but upon inspection of the case necks, very, very little evidence of blow-by was present. I also had two punctured primers. Any ideas as to what the issue could be?

The ugly: Here's the part that's boggling my mind for the moment- the iron's shot true to form- point and shoot, no fuss, the bullets go where the sights are pointed. On the PE scope, however, I hit the vertical stop when the post is still a good three feet low of the point of aim at 100 yards. What method is preferred to shim or otherwise re-align the scope with respect to elevation using the PE mount?
 
The bad: I reload, hence when I was collecting the spent brass I had a look at the primers, and found that not only are all cratered, so to speak, but the entire primer strike area was raised in the 'wrong direction' relative to the firing pin dimple. I thought headspace might be an issue, but upon inspection of the case necks, very, very little evidence of blow-by was present. I also had two punctured primers. Any ideas as to what the issue could be?

Check firing pin protrusion with the issue tool.
 
Check firing pin protrusion with the issue tool.

+1. The first 91/30 I ever bought had the same issue - One of the fellas here mailed me the gauge (it's the tool that looks like a bottle opener) and a couple turns later I was in business.

Tradeex, P&S or Marstar. If you go with Tradeex, grab one of the Swiss .30 cal cleaning kits and the extended Mosin recoil pad. Those cleaning kits are the tits and for $15.00 you can't go wrong.
 
Back
Top Bottom