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Old September 8, 2011, 09:23 AM   #1
jpsshack
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7.62x54 reloading/casting

Hi folks,
I've ordered an M/N 91/30 and a couple boxes of reloadable brass, and I need to get set up for reloading the round. I'm stuck between getting a Lee Loader for it vs. a die set–I want to neck size to save the life of the brass. Even though I have a good press, I like the Lee Loaders and it somehow seems fitting for this old rifle, plus it neck sizes.

The other question has to do with the bullets–I'm a caster and I cast a .312 bullet, the Lee 312-160 with a gas check. My question here is whether to get the .311 or the .314 push-through sizer to apply the gas check. I've heard the bores on these things can be pretty big. I don't know if the .314 would even do the job.

thoughts, opinions?
-jp
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Old September 8, 2011, 11:09 AM   #2
chris in va
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I'm no expert, but seems to me you may want to measure the 'as dropped' size of those boolits to determine which sizer to get. If they only drop at 311, the 314 won't be any use to you.

I also shoot the 312-155 through my CZ carbine and use the 312 sizer with GC.
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Old September 8, 2011, 11:11 AM   #3
FrankenMauser
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Slug the bore, before you order your sizer.

If you jump the gun, you'll regret it.
(No pun intended, but it works. )
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Old September 8, 2011, 12:03 PM   #4
jpsshack
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Alright, thanks, I'll slug it out.
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Old September 8, 2011, 09:33 PM   #5
res45
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I load and shoot cast in my Mosin M44 I use the Lee .312 dia. 160 gr. TL mold,the bore of my Mosin slugged out at .312,bullet drop from my Lee mold at just a hair under .314 dia. I apply my gas checks using the Lee .314 push through sizer by using a little imperial sizing wax on my fingers as a bullet lube when seating the checks,the bullets are ranch dipped in my Alox/JPW lube and allowed to dry overnight.

Once the lube is dry I then pass the lubed bullet back through the sizer GC first not only does this pack the lube grooves nice and full but it removes any excess lube but it keeps the bullet nose nice and clean which helps eliminate buildup in your seater die. I also shoot the same bullet in my SKS rifles which also have .312 grooves.

I use RCBS dies and the included .311 expander ball and the Lee universal expander to bell the case mouth,you can neck size or partial resize with regular FL resizing dies by just adjusting the die body up higher. Bullets are crimped using the built in roll crimp feature on the bullet seater die.

5 shot 50 yd. M44 cast load target.

Last edited by res45; September 10, 2011 at 06:11 AM.
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Old September 8, 2011, 11:33 PM   #6
jpsshack
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res45, you rock! you could not have been more on the same page as me.
Thank you for your extremely helpful suggestions. BTW, I use that same load under the same boolit in my .308 with the same great accuracy (only sized to .309) Thanks alot.
-Jess
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Old September 9, 2011, 12:54 AM   #7
res45
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Quote:
BTW, I use that same load under the same boolit in my .308 with the same great accuracy (only sized to .309) Thanks alot.
-Jess
Yep I have sized it down to .310 as well and fired it out of my old 300 Sav. with excellent results. The only exception is I use a 300 Sav. case reformed from 7.62 x 51mm NATO brass the slightly smaller case capacity give me about 100 fps. extra MV than the same load would in a standard thinner brass factory case.

Last edited by res45; September 10, 2011 at 06:12 AM.
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Old September 9, 2011, 05:22 AM   #8
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Shoot as big a boolit as will chamber reliably !

I have 2 & 1 slugs 312 the other 313 . I cast the lyman 314299 & size it in a 314 die that`s been polished To 3145.

If ya get the press dies from lee they give a part number for an expander & neck sizing is as simple as a die adjustment !

I don`t think mine will ever shoot as good as res45s rifle , but still enjoy tinkering on the Mosins !!!!
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Old September 9, 2011, 07:50 AM   #9
jpsshack
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excellent. Thanks guys.
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Old September 9, 2011, 08:26 AM   #10
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double post
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Old September 12, 2011, 11:04 PM   #11
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res45, if you're still there–one question.

I had been told once before that it's possible to neck-size or partially size a rifle case using a full-length sizer by adjusting the die. I can see how one could partially size the case, but for the life of me I can't visualize how it would be possible to neck size only, given that the shoulder and neck are a full case length up in the die. It would seem to me that they are inaccessible without fully resizing the case.

what am I missing?
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Old September 13, 2011, 12:37 AM   #12
Jack1939
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I am using a Lee Full Length Sizing Die to neck size 7.62x54R. I found instructions in a post about half-way down in the link below, it basically says to screw in the FLS die till it touches the shell holder and then back it out three-quarters of a turn. In the link the guys says he doesn't know if it will work for Lee dies but I tried it and it does. I sprayed the brass with a 10:1 mix of Lee case lube and rubbing alcohol and allow to dry overnight. This way the brass has a white coating and I can see where the die contacts (or does not contact) the shell-holder. It sizes only the neck and does not touch or "bump" the shoulder at all...

The second link has instructions for using a .308 Lee collet die to neck size 7.62x54R using a washer. However I think that with the collet die you can only neck size to .308 while with the FLS die you can swap the expander for the .303 brit expander and neck size your 7.62x54R to .310

NS with FLS dies (half way down the page):
http://www.reloadersnest.com/forum/t...?TOPIC_ID=6189

.308 Collet die for 7.62x54R:
http://www.surplusrifle.com/shooting...swap/index.asp
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Old September 13, 2011, 08:22 PM   #13
jpsshack
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Thanks for the feedback. I think I'm understanding it now...The taper of the brass allows it to be accomplished, but with no shoulder bump. Thanks for the help,
-jp
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Old September 26, 2011, 12:28 PM   #14
jpsshack
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I ended up with the Lee .314 push-through sizer for my CBs, + a set of RCBS dies. Partial-full-length sizing the brass, and I seat the bullet so the GC ends up in the little unsized portion of the neck where it meets the shoulder. Everything seems to be working fine–they are more accurate than the factory loads.

Last edited by jpsshack; September 26, 2011 at 12:30 PM. Reason: extra sentence
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Old September 26, 2011, 09:25 PM   #15
res45
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jpsshack,sorry I missed your followup post,but it looks like you got the info you needed and got it figured out.
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Old October 1, 2011, 03:39 PM   #16
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Here's 10 shots offhand with the 91/30, using the Lee 312-160 bullet over 16 grains 2400, 30 grains Varget and 33 grains Varget. All at 50 yds. I had the rear sight set at 150 and 200 meters, depending on the load (150 meters for 2400 and 30 gr. Varget, 200 meters for 33 grains Varget).
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Old October 1, 2011, 03:43 PM   #17
jpsshack
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res45 I read that you ranch dip your boolits for this application. Do you find that ranch dipping eliminates all the leading? I'm using 2 coats of 45-45-10 (45% Alox, 45% Johnsons Paste Wax and 10% mineral spirits, from castboolits forum), and there is a bit of leading.
Jack1939: I figured out the Lee Neck Sizer technique on my own–I just noticed that part of your post. Check out my new thread on the subject–I made a thicker sizing shaft using a motorcycle bolt, along with the aforementioned washer trick, and I'm now able to neck size to .310 using my .308 Lee Collet Neck Sizer

Last edited by jpsshack; October 1, 2011 at 07:33 PM.
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