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neck size or full length size?????

 
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  #36  
Old 12-21-2009, 09:10 AM
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Re: neck size or full length size?????

Quote:
Originally Posted by 1357MAG View Post
Actually there is. If I decide to neck size only, will I periodically have to full length size as well? Thanks in advance MR.
Yes, you will ;). After a few loadings your round won't chamber, and you'll have to bump the shoulder back. You can get either a bump die that just does the shoulder, or FL size it once, and start over lol.

Welcome to the forum.
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  #37  
Old 12-21-2009, 11:46 AM
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Re: neck size or full length size?????

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Originally Posted by john g duvall View Post
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

Email sent I was told by Tim north @ broughton rifle barrels to full length size . He shoots 1000 yard competition .

I appreciate everyones help on this subject . Thanks

Bigbuck
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  #38  
Old 12-22-2009, 10:08 PM
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Re: neck size or full length size?????

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Originally Posted by BountyHunter View Post
Neil jones dies are great along with a custom die from your smith off the resize reamers.

However, you might have another much cheaper option if a standard case.

buy a Redding body bump dies ($25) and send it to Jim Carstenson at JLC Precision along with 10 cases fired 2x.

For about $80 he will convert the body die to a custom honed to your chamber FL bushing size die that uses Redding bushings. Turn around is normally less than 2 weeks.

Jims info is at www.6mmbr.com under the "Tools" section

I more than a few of Jims dies and work great.

BH
Ooh, this sounds like a smart option. I have a Rem. 722 in 300 Savage that I would like to try that with. Thanks!
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  #39  
Old 12-23-2009, 07:17 AM
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Re: neck size or full length size?????

Hornady will also perform a similar task, you can get either regular or bushing style dies. It'll run about $75 - $90. I may do this for my new 7mmRemMag.
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Last edited by bowhunthard; 12-23-2009 at 11:26 AM.
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  #40  
Old 12-23-2009, 07:47 AM
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Re: neck size or full length size?????

BountyHunter's suggestion...
Quote:
buy a Redding body bump dies ($25) and send it to Jim Carstenson at JLC Precision along with 10 cases fired 2x. For about $80 he will convert the body die to a custom honed to your chamber FL bushing size die that uses Redding bushings. Turn around is normally less than 2 weeks.
...is popular among those who think (believe?) everything used in reloading a fired case has to be perfectly matched to each other. Otherwise, how else would they get those sub 2/10ths MOA groups at a couple hundred yards or so? This typically make sense to reloaders wanting their hardware to produce nothing worse than 2-bullet-diameter groups at the shorter ranges.

The facts are, this level of precision matching ain't necessary to get tiny groups at long or short ranges. A good example is what happened in 1991 at the Rocky Mountain Palma Matches.

Sierra Bullets new 155-gr. HPMK Palma bullet had just been released. Several thousand rounds of .308 Win. ammo had been handloaded on two Dillon 1050 progressive machines. One resized the necks on new Winchester brass with a Lyman neck expander button and primed them with 210M primers, the other metered 45.3 grains (2/10ths grain spread) IMR4895 into the cases then seated the 155-gr. bullets (runout was up to 3/1000ths or a bit more). Twenty rounds were picked at random to test in a Palma rifle built on a pre-'64 Winchester 70 action epoxy bedded in a wood stock. Clamped in a machine rest and zeroed on a target 600 yards downrange, those 20 shots went into 2.7 inches; a bit under 1/2 MOA. New cases, not exact charge weights, crooked bullet seating did pretty good. Considering to do that well at 600, it would have to group under 1/4 MOA at 100 yards. In the match, a couple dozen folks from around the world said their rifles (with all sorts of chamber dimensions) said it was shooting 1/2 MOA at 600 yards. Not too shabby for non-perfect matching of case to chamber.

Sierra Bullets' tests used conventional full length sizing dies with necks lapped out to a couple thousandths less than loaded round neck diameter. They now use Redding full bushing dies set up the same way. Their 30 caliber match bullets have shot into sub 2/10ths MOA groups (sometimes under 1/10th MOA) from their standard SAAMI dimension chambered barrels. One after another groups this size as ten bullets with lanolin on them (the jacket forming lubricant) were grabbed as they came out of the pointing machine then seated in full length sized cases metered with powder direct from a measure then shot.

And semiauto M1 and M14 rifles match conditioned for service rifle teams would shoot good lots of commercial .308 Win. match ammo under 4 inches at 600 yards. In spite of having to get all those moving parts back into the exact same position as possible, those new cases in sloppy mil-spec chambers still would shoot 1/4 MOA at 100 yards.

New 30 caliber belted magnum cases will shoot under 7 inches at 1000 yards with good barrels fitted the right way. These also shoot 1/4th MOA or under at 100 yards else they wouldn't shoot that well at 1000.

There ain't no such thing as perfectly round chambers and cases. So there ain't no "perfect" fit of case to chamber anyway. Folks using full length sizing dies set up correctly get several dozen reloads with .308 Win. cases and over 20 with belted magnum cases.

Best ever demonstration of accuracy attainable with full length sized cases in SAAMI chambers was several 10-shot groups at 600 yards (another Winchester 70 in a wood stock). Largest one was about 1-1/2 inch. Smallest was about 7/10ths inch.
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  #41  
Old 12-23-2009, 12:25 PM
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Re: neck size or full length size?????

Quote:
Originally Posted by bowhunthard View Post
Hornady will also perform a similar task, you can get either regular or bushing style dies. It'll run about $75 - $90. I may do this for my new 7mmRemMag.
This is J**, and this is my 7mm. Rem. Mag! LOL!
Let me know how that works out for ya. BTW, I have to get over and get my '06 on paper again. I haven't shot it since I painted it!
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  #42  
Old 12-23-2009, 04:31 PM
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Re: neck size or full length size?????

lol .
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