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neck size or full length size?????

 
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  #22  
Old 12-19-2009, 10:53 AM
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Re: neck size or full length size?????

Quote:
Originally Posted by bigbuck View Post
How do I know and measure my shoulder to see if it is set back to far?
What kind of tool do you use?

Thanks

Bigbuck
Hornady Lock-N-Load Headspace Gage 5 Bushing Set with Comparator - MidwayUSA



Innovative Technologies - Reloading Equipment
Case Gauges & Headspace Tools - RCBS Precision Mic Cartridge Headspace Tool
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  #23  
Old 12-19-2009, 10:55 AM
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Re: neck size or full length size?????

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Originally Posted by Bart B View Post
I use an RCBS Precision Mic. Hornady and others also make tools that does the same thing.

Fired cases are put in the tool and the case headspace (head to shoulder reference, or datum) from case head to shoulder is measured. After full length sizing, the sized case is measured to see how much shorter the case headspace is.

Any more than 2 thousandths shorter is too much. You'll get a 1 thousandths spread across your cases if they're lubed uniformly. Other wise, too little lube results in not enough shoulder setback and to much lube lets the shoulder get set back too far.

Redding sells shell holders in 2 thousandths steps over the standard so one that lets your die just touch it at the top of the ram's stroke will result in uniform fire case head setback.
Great, thanks alot my wish list just got bigger
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  #24  
Old 12-19-2009, 11:06 AM
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Re: neck size or full length size?????

Thanks for the Pic this is gettin better all the time

Bigbuck
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  #25  
Old 12-19-2009, 06:32 PM
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Re: neck size or full length size?????

I agree with the above post. The Hornady L-N-L Headspace Gauge Set works great, I've been using this for about 2 years and would recommend it to anyone.
If you are going to get it, I'd also recommend getting the L-N-L bullet comparator set also.

Good luck.
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  #26  
Old 12-19-2009, 10:54 PM
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Re: neck size or full length size?????

Finally found my old plot sheet I used when testing my new Kreiger barrel in my .30-.338 Keele Mag. (.300 Win. Mag. cases full length sized in a standard .30-.338 Win. Mag die; neck's a bit longer). All 30 shots fired consecutive, once every 20 to 30 seconds.


Sierra 190's (black dots) were previously fired, then full length sized normally then again with a body die to get the ridge next to the belt reduced to new case diameter. Die's neck was lapped out to 2 thousandths smaller than loaded round neck diameter.

Sierra 200's (red dots) were fired in new, virgin brass, just full length sized to set the .300 Win Mag shoulder back, no neck turning or any case prep at all.

Chamber's a standard SAAMI dimension.

Here's what my .308 Palma rifle does with full length sized cases:

I tried neck sizing, partial neck sizing with both barrels when new. Groups were 2 to 4 times as big; largest with partial neck sizing with the bolt binding ever so slightly when closed on a round.

Last edited by Bart B; 12-20-2009 at 06:36 AM.
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  #27  
Old 12-20-2009, 03:53 PM
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Re: neck size or full length size?????

Quote:
Originally Posted by bigbuck View Post
As the title reads I was wandering if you guys neck size or full length size. I have a Rem 300 RUM with a custom barrel I use Federal 215 M primers Nosler custom brass retumbo powder topped with a 210G Berger. If I can get a tad bit more accuracey out of it by neck sizing only I will do it what's your experience and or advice? All is welcome. I'm interested in shooting bug holes as far as the eye can see

Bigbuck
Hello "Big Buck". I use a custom built Akley Improved 300 Win Mag. Lonnie Hummel (CHIEF ENGINEER) of Hornady out in Grand Island Nebraska said I needed full sized dies($300.00!!!) If it loads properly then look at this. It is from Sept 2009 at 400 yards. Notice that my powder loads were not "on" until I hit 71.2 grains of R-22. The last three shots were at 71.2 gr. There are 8 witness signatures that verify 3 holes on the cross hairs at 400 yards. I put two of these holes there. Don Sanders put the third "hole in a hole". It measured .523 inch. covered it with a dime. It is the weapon and load that works. Donny is 5'9" tall and weighs about 240lbs. I'm 6'1" and weigh 195. Two different breathing patterns, heart beats, eye reliefs etc. with the same result. Full size works with Nosler 5 star custom brass, Fed GMM 215 primers, 71.2 gr of R-22 and seating a 210 grain Sierra HPBT Matchking(BC.650) at .001 to the lans and grooves. T. Sarver set the 1000 record using a 240 gr. Sierra BTHP Matchking out of a .338 Lapua necked down to 30 cal. 1.4 inch 5 shot group, scored 50 five x!!!! It is on the web so...check it out. My picutre won't load so write and I'll send it. johngduvall@windstream.net
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  #28  
Old 12-20-2009, 05:20 PM
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Re: neck size or full length size?????

I am glad to see that there is much to benefit from me reading this post. I am a new member here.
My father and I just had this conversation the other day. He had asked me why I wasn't neck sizing as I am only shooting my brass in one rifle? If anyone wants to give me some direction on making a decision here, I am all ears.
Thanks!
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