Mossberg 464

[pearcetopher]

Hello all,

I tried casting boolits for my mossberg 464

I used 309 170F lee mold

I ran through a 311 sizer

when chambering I had to give it lots and lots of push to get the bolt to close
too much if you ask me

upon trying to un chamber the round I broke my extractor
great

are the throats on these guns unusually tight? On one extracted round I could see the rifling marks clearly engrained into the boolit

I am seating at the crimp point

help

[Cowboy_Dan]

You may want to do a pound cast or a chamber casting to learn about your throat. There is a sticky on doing a pound cast.

[sthwestvictoria]

I don't have a 464 however my Win 1894 has no throat to speak of - there is case neck then the rifling starts. This is a sulfur chamber cast:
127786
I believe that other 30-30 rifles have very little free-bore to them.

From your post the hard extraction was with an unfired round? Or was the fired brass hard to extract?

I presume you are happy the hard chambering is not a brass/re-sizing problem but rather the projectile. In my limited experience the bullet will pull out of the case spilling powder in the action before I am aware of a hard extraction!

[quilbilly]

I am sizing to 308 for gas checks and 309 for plain base for my 464 and have never had an issue. Currently I am casting the Lee 160 RNGC and the Lyman 130 gr plain base. Since I am using the RCBS cowboy seating die, it automatically puts a flat point on the boolits so there are no issues. Late addition - I use these same sized boolits in my Rem. in 308 and there are very very accurate as well.

[jmort]

"I ran through a 311 sizer"

This makes sense:

"I am sizing to 308 for gas checks and 309 for plain base for my 464"

[pearcetopher]

the hard boolit chambering worries me as I am unable to extract a round properly


if its safe to shoot then I dont really care but I thought the boolit was not supposed to be touching the rifling

[sthwestvictoria]

I thought the boolit was not supposed to be touching the rifling
This is the case with Jacketed bullets but not with cast.
Not the 30-30 but this is a picture of the amount of engraving my 250grain 35 whelen gets and it still extracts and shoots fine (also demonstrates how much freebore this Whelen has compared to the Win 1894):
127888

As I suggested at #3 are you confident this is not a problem with brass rather than the cast bullet? Do factory or your jacketed reloads chamber and extract unfired without difficulties?

[pearcetopher]

who knows maybe I did't resize properly

[gwpercle]

Both the third and fourth editions of Lyman Cast Bullet Handbook specify sizing cast boolits for the 30-30 to .308 dia. I did this for years ,with the Lee 309-170-F , then read on this site .309 was proper. I bought a .309 sizer and tried it. Both sizes work just fine in my Winchester 94. No difference in accuracy...try .308 or .309 sizer and you should not have any problems. .311 may be required for older rifles with larger bores, throats or chamber necks...new rifles should not require .311.
Gary