reduced mosin loads question

[dlbleak]

a few questions about reduced loads in the mosin. i got a box of 123 gr .310 bullets for the sks. when loading this round i have to bottom out my seating die to get the bullet in far enough. the case is still below the crimp ring by a mm or two. if i go any further, it crushes the neck. this is a widely used load according to my research, any suggestions?

 

[MoBoost]

Don't seat it all the way ... I've set them as shallow as .100".

 

[dlbleak]

ok, i can see how setting it as shallow as possible will help the accuracy but damn,there won't be much holding it in place. btw, i'm using 15gr of unique with this load. can't wait to shoot it. i've read that it has about the same punch as a 357 out of a lever gun. if thats the case,i could shoot all day.

 

[MoBoost]

18gn of 4759 is the goto load for 123s.
http://www.okcgunclub.org/military/mb/7.62x54.html

 

[kd5rjz]

ok, i can see how setting it as shallow as possible will help the accuracy but damn,there won't be much holding it in place. btw, i'm using 15gr of unique with this load. can't wait to shoot it. i've read that it has about the same punch as a 357 out of a lever gun. if thats the case,i could shoot all day.

It should be a pretty light load:

 

[dlbleak]

It should be a pretty light load:

thanks for the graph. you might have to explain some of it to me. it looks like the bullet is just barely gonna clear the barrel!

 

[kd5rjz]

The red line is pressure at x barrel length.

The blue line is pressure at x barrel length.

It should clear the barrel just fine. The pressure will be a tiny bit higher than the graph shows because I used a definition for a .309 bullet as I don't use .310 bullets for anything. It should be really low recoil.

 

[dlbleak]

thanks,can't wait to shoot it

 

[dlbleak]

this turned out to be a sweet load. recoil was like a 223 and accuracy was decent. i was getting 2 inch groups at 50. kinda sounded like a suppressed 308.

 

[Old Fart]

Seems I saw one of those inserts on SG that allows you to shoot 32acp thru a mosin.

Here it is: http://www.sportsmansguide.com/net/cb/762x54r-to-32-cal-multi-chamber-insert.aspx?a=587989

I got one for my brit 303 and it's fun to shoot. Probably couldn't kill a rat with it though.