Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

neck size or full length size?????

 
LinkBack Thread Tools Display Modes
  #8  
Old 12-16-2009, 01:00 PM
Platinum Member
 
Join Date: Jun 2001
Location: Potomac River
Posts: 5,057
Re: neck size or full length size?????

Quote:
The preferred method is to body size with a Redding Body Die and then neck size with a Lee Collet neck sizer. Gives very good results and low runout.
That is what I normally do with my normal calibers.


With the 7 Allen Magnum I have a custom chamber and a custom die so you basically are not working the brass very much when you full length size.

For a hunting rifle you have to be careful about not sizing enough. It is funny how even with the same lot and brand of brass one case will size a little differently than the next one.
__________________
The Smokin Fur Rifle Club
Reply With Quote
  #9  
Old 12-16-2009, 01:24 PM
Platinum Member
 
Join Date: Jun 2009
Posts: 1,654
Re: neck size or full length size?????

Quote:
Originally Posted by Buffalobob View Post
That is what I normally do with my normal calibers.


With the 7 Allen Magnum I have a custom chamber and a custom die so you basically are not working the brass very much when you full length size.

For a hunting rifle you have to be careful about not sizing enough. It is funny how even with the same lot and brand of brass one case will size a little differently than the next one.
I have a factory Remington chamber . Does this change things?
I'm going to load some up that's fire formed to my chamber neck size only then i'm going to shoot some groups @ 300 yrds this should tell me what do yall think?
Reply With Quote
  #10  
Old 12-16-2009, 01:51 PM
Gold Member
 
Join Date: Oct 2002
Location: York, Pa.
Posts: 588
Re: neck size or full length size?????

bigbuck,

I don't see really any of the case at the bottom as the internal dimensions and the die are that close. Usually bumping the shoulder .001 - .002 does the trick.

You can get a shim kit for under the dies which help in setting the dies once and just changing the shim to get the correct 'bump' setback for your rifle chambers liking. You will need a set of these too;

Graf & Sons - HORNADY HEADSPACE GAUGE KIT, BODY w/5 BUSHINGS

Usually you can get a set of custom dies from the 'smith that chambered your rifle and they work the brass very little as Buffolo Bob stated. As for any other the Redding, Lee, or RCBS work just fine, your p[reference, the tool is usually only as good as the man the behind it.

Take your time and find what your rifle likes. The rifle is also only as good as the fodder you feed it. Alot of so-so rifles can shoot very well with a carefully handloaded cartridge
__________________
Kevin
Reply With Quote
  #11  
Old 12-16-2009, 03:32 PM
Platinum Member
 
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,954
Re: neck size or full length size?????

Quote:
Quote:
Originally Posted by bigbuck View Post
Mark,
All I use as of now is just a standard RCBS die set.
I do have a hornady neck sizer only die that's actually for a 300 winchester mag. Hornady said I can use it on my 300rum I've tried it and it works it's at the top of the adj. though. I was told by tim north to full length size but I feel like I'm working my brass to much . When you neck size only does it not line up the bullet with the center of the bore better if so? would you think that this would be some what better for accuracey? Thanks
Bigbuck,

If you only partial FL size - just enough so the cases barely fit easily - you will reduce the the work stress on the brass. More importantly, if you use bushings for neck sizing, you will reduce the stress to the necks by a whole lot. I would recommend the the Redding type S FL bushing sizer, and set it to FL size the body and shoulder just enough to make the case barely fit comfortably, and set the bushing to partially size the neck, leaving a small un-sized area at the base of the neck where it joins the shoulder, which is what we call a donut.

Bushing sizing is the most likely way to get your neck concentric and leaving a donut at the base of the neck is the best way to align your bullet (assuming that your bullet is seated concentrically) to the bore, assuming your neck chamber is concentrically aligned with youir bore which might be questionable in a factory tube. FL or partial FL sizing will actually help in getting your bullet lined up by giving the case a little play for the donut to align the case in the neck chamber.

The absolute best way to go is custom bushing dies and Niel Jones is porabably the best maker of custonm dies, or at least right there at the top of the list. They will cost you though, just like anything that is made custom.

Ohhh... I know a guy who use a standard Redding FL die with a floating expander ball in conjunction with a rubber "O" ring. He partial sizes, leaving a small donut and says his neck runout is less than .001. He uses a Redding Comp Seater also and shoots one hole groups with his 300 WSM.

Mark

Last edited by MontanaRifleman; 12-16-2009 at 03:35 PM.
Reply With Quote
  #12  
Old 12-16-2009, 04:01 PM
Platinum Member
 
Join Date: Jun 2009
Posts: 1,654
Re: neck size or full length size?????

Thanks Mark...
Reply With Quote
  #13  
Old 12-16-2009, 08:39 PM
Gold Member
 
Join Date: Jun 2006
Location: Shangri-La
Posts: 923
Re: neck size or full length size?????

Quote:
Originally Posted by bigbuck View Post
Mark,


Woods,
Can you explain a little more about the partial full lenght resize process that you do ?


Bigbuck
Well one of the problems is that there is not a set of definitions for the different kinds of sizing. I come by mine through the various forums and have settled on these:

Partial Neck Sizing - sizing part of the neck and leaving part of the neck as a fire formed exterior do-nut, no sizing of the case body or pushing the shoulder back

Neck Sizing - sizing all the neck but not sizing any part of the body or pushing the shoulder back

Partial Full Length Resizing - sizing all of the neck, sizing the case body and pushing the shoulder back a minimal amount so there is some contact at the shoulder between the chamber and case

Full Length Resizing - sizing all of the neck, sizing the case body and pushing the shoulder back so there is no contact between the chamber shoulder and case shoulder


Like I say, this is my understanding and references are hard to find but here are three

Full Length, Partial & Neck Resizing
Varmint Al's Handloading/Reloading Page
Collecting and Shooting the Surplus Rifle - Cartridge Case Sizing, Stretching, Trimming & Lubing

So once your case has expanded enough to have a crush fit in the chamber, then you can resize to set the shoulder back .001" or so. Like Montana Marine says you can leave an exterior do-nut


and this may help. It did not make a demonstrable difference in my limited testing but I thought it should have! You can also leave one of these by putting a washer around the case when using a Lee Collet


or by the adjustable bushing type dies.

Consistancy is the key and if you are neck sizing until you have a crush fit, then the case dimensions are changing, very minimally but changing nonetheless. Once you have fully expanded the case, sizing to set your shoulder at the exact same point everytime and make sure your brass has the same amount of work hardening, then you are the closest to duplicating the exact same case prep everytime.

For me that is crush fit, partial full length and annealing everytime so the case dimensions and bullet grip are exactly the same everytime, or as close as I can make it.
__________________
If you can read this, thank a teacher.......if you are reading this in English, thank a soldier.
Reply With Quote
  #14  
Old 12-16-2009, 10:14 PM
Gold Member
 
Join Date: Aug 2008
Location: east central fl. /n.c. pa.
Posts: 632
Re: neck size or full length size?????

all of this is fine, and accuracy is certainly a very important part of what we do. but all you will need have happen is for one empty to get hung up at the wrong time. i have, and now i full legnth resize all my hunting loads. you can keep your bug size groups, ill take the second shot.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: neck size or full length size?????
Thread Thread Starter Forum Replies Last Post
To neck size or full length size??? meatyrem Reloading 47 06-08-2014 08:43 PM
Size for bushing to neck size rsbhunter Reloading 2 04-10-2011 05:55 PM
Neck Size vs Full length size Mike6158 Reloading 4 01-03-2010 09:23 PM
Want to build a full size 22LR rifle need idea bigrich954rr The Basics, Starting Out 4 03-07-2007 07:21 PM
Full Length or neck size only? Blacktail Reloading 1 08-02-2006 12:18 AM

Current Poll
Do You Think Slingshots Should Be Legalized For Hunting Brown Bear?
Yes - 47.06%
889 Votes
No - 52.94%
1,000 Vote
Total Votes: 1,889
You may not vote on this poll.

All times are GMT -5. The time now is 10:23 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC