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Where is neck sizing taught

natdscott said:
Tommie, I don't think anybody is saying it can't work, just that it isn't good for beginners, and it may not deliver BETTER results than careful use of an FL die.
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I’d go further. In virtually every situation, there is zero accuracy advantage to neck-only sizing, and it’s likely neck-only cases will have to have the shoulder bumped every few firings or else sticky extraction will occur.

Every LR BR competitor I know and shoot with bumps the shoulder around .001 to .002. One fellow, who has NBRSA Hall of Fame points, shoulder bumps AND small base sizes his cases before each Nationals. I have experimented with small base sizing as well and haven’t any difference in accuracy at 600 or 1000 yds either. This data point is completely counter to the idea that a neck-only sized case is more accurate because it fits the chamber better.

I think the idea that neck-only sizing is better was propagated by gun writers 40-50+ years ago. The initial ideas were to set the sizer so the shell holder touched the sizer die, seat the bullet to the COAL length without measuring ogive, and reloading was often presented as a way to same money on ammo. All this was mainly for factory hunting rifles with the typical huge chambers.

Of course neck-only sizing and seating with the ogive would give better accuracy, but there was often that sticky case issue after three firings. Somewhere along they somebody discovered that you could get at least as good if accuracy by bumping the shoulder .001 to .002, and that pretty much resolved the sticky case issue.
 
INTJ said:
I’d go further. In virtually every situation, there is zero accuracy advantage to neck-only sizing, and it’s likely neck-only cases will have to have the shoulder bumped every few firings or else sticky extraction will occur.

Every LR BR competitor I know and shoot with bumps the shoulder around .001 to .002. One fellow, who has NBRSA Hall of Fame points, shoulder bumps AND small base sizes his cases before each Nationals. I have experimented with small base sizing as well and haven’t any difference in accuracy at 600 or 1000 yds either. This data point is completely counter to the idea that a neck-only sized case is more accurate because it fits the chamber better.

I think the idea that neck-only sizing is better was propagated by gun writers 40-50+ years ago. The initial ideas were to set the sizer so the shell holder touched the sizer die, seat the bullet to the COAL length without measuring ogive, and reloading was often presented as a way to same money on ammo. All this was mainly for factory hunting rifles with the typical huge chambers.

Of course neck-only sizing and seating with the ogive would give better accuracy, but there was often that sticky case issue after three firings. Somewhere along they somebody discovered that you could get at least as good if accuracy by bumping the shoulder .001 to .002, and that pretty much resolved the sticky case issue.
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Very interesting history lesson. Every once in a while I enjoy someone sharing these great nuggets of knowledge. Thanks...
 
Neck turning is not the same thing as neck sizing. Most LR BR competitors DO neck turn but DON’T neck-only size.

Now just HOW much to neck turn, in terms of optimum neck thickness and neck clearance is another topic I am sure has been covered in depth here.
 
Keep in mind I am a intermediate reloader at best and I reload for hunting and ringing steel and punching paper and are just now transitioning to longer range shooting beyond 400 yards.

Having said all that, I will NEVER neck size only my brass EVER again. Neck size only cost me a 1hr 40 minuet drive 2x and $100+ to a gunsmith to get a unfired reload unstuck from my rifle, and believe me I tried first but failed. I will now also forever more check EVERY reload's C.O.A.L and then CAREFULLY to see if it will chamber, not every other one.

I now use a Redding body only sizing die and then a Lee Collet die and then Forster Micrometer BR bullet seating die on all my calibers and for the one caliber I own that Redding doesn't make a BSO die I go straight Redding FL sizing die.
 
You can usually talk to somebody at a range for 5 mins and see if you should ignore them or not. Usually they tell you all the top benchresters neck size
 
Simple answer from the simple guy-

Either use a body die that accepts a neck bushing (Redding or the higher priced dies with the feature) so it can be done in one step, or full size your case and then neck size. One way or the other, you have to resize the neck to at least make sure the bullet will be held in the case.

If simple guy here is wrong, folks, please correct me.
 
AJC said:
I am really curious if one was wanting to have a custom die made with 3x fired brass if neck sizing would not give a better result for the purpose of having a full length die made. Would it not work the brass the least if done this way? To be clear this die would only be best for that one gun/barrel until the barrel needed to be changed. Still trying to learn!!!!
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If you have your own reamer and a good gunsmith, that die will work just fine for a very long time.

Later
Dave
 
_Raining said:
Anyone can post on Youtube, the same way anyone can post on a forum. You just need to determine for yourself who you listen to and who you don't.



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Right. Don’t blindly follow YouTube, gents! That last one is dubious advice at best.
 
From what I understood about the neck size only concept, it was for rifles with "generous" chambers. For rifles with overly large chambers the neck sized brass allowed the cartridge to better fit these chambers. Rather than laying in the bottom of these chambers with the bullet not starting straight to the bore. I've seen pictures of some bullets shot in rifles that had extreme conditions of this, and the base of the bullet was no longer square to the axis.
 
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