Finnish M39 help needed

Ronjon73

Ronjon73

CGN Regular
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Location
Calgary
Hi all, I have a 1942 vkt that is shooting way too high. I finally got out to the range that has backstops at more than 100m. I set up my target on the 200m backstop ( 218 yards according to rangefinder ) and set my rear sight to 2. I couldn't even see holes on paper so I then set sight back to 1.5(150m or 150 yards?) aiming at bullseye and still couldn't see impacts.

I switched to a 6 o'clock hold and finally got them on paper 18 inches high of POA. I should mention i was shooting out of a nearly mint bore with Lapua D166 200g over 43.8g N140. So 18 inches high at 200m with sight set at lowest (1.5) setting using proper ammo. Do I need a taller front sight ? The barrel is stamped with what looks like a 62 behind the front sight, i used my callipers to measure from the base of the front sight post to the highest point on the front sight post and came out with 0.219 inches or 5.56mm. I should also mention that there is no stamp on the front sight blade itself and the top of the blade is shiny, unlike any images on the internet. It looks like somebody has filed it down in the past.

I imagine i'll be able to find a taller front sight post on the net somewhere but is there a calculation to figure out what size?

Thanks for taking the time to help out.
 
When you start at that kind of range with a new load the RSO should have escorted your unsafe self off the range. How do you know your round weren't going over the berm? You should at least put the first few rounds on paper at short range 25-50 yards to get some idea of where they are hitting. Then slowly work out making sight adjustments as necessary. That way you at least keep the rounds on paper and into the backstop.
 
Cottage Hill Bill said:
When you start at that kind of range with a new load the RSO should have escorted your unsafe self off the range. How do you know your round weren't going over the berm? You should at least put the first few rounds on paper at short range 25-50 yards to get some idea of where they are hitting. Then slowly work out making sight adjustments as necessary. That way you at least keep the rounds on paper and into the backstop.
Click to expand...

Well thank you for your input. All members of the range are in fact RSO's, and the range is a world class facility. There is no chance of rounds were going over the berm considering they are roughly 20 to 25 meters high. That's roughly 60 - 75 feet for you backwards arrogant know it all Americans.
 
I've ended up with a great many milsurps that haven't appeared to have been zeroed when they came into my possession. Mosin's and SVT's fresh from refurb can often be off by a couple of feet. With bolt guns it is helpful to quickly boresight before heading to the range (yes, without a scope). Set the rifle up in a solid support and squint down the bore at an object at around 100 yards. Adjust the sights to agree and you'll be on paper at the range. Nothing more frustrating than wasting ammo and struggling to get zeroed at a busy range. The problem noted by the OP are more than normal ammunition ballistics could explain at a mere 100 yards. Another aid is a very large target backing. To help me figure out where my laboriously assembled Snider ammo was shooting I use a 4' x 4' plywood sheet screwed to my stand. I now use it for every "new" rifle and am never left guessing.

milsurpo
 
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