what size neck bushing....?

[Sniper338]

What size neck bushing For a 338 lapua?




6xc?
22-250AI?
6br no neck turn?


Lapua and norma brass....

 

[michaelnel]

What size neck bushing For a 338 lapua?




6xc?
22-250AI?
6br no neck turn?


Lapua and norma brass....

The normal procedure for a starting point is to measure the neck of a LOADED round and then choose a bushing .001 to .002 smaller.

 

[artbosco]

+1 Typically .001" to .002" under the loaded rounds OD at the pressure ring if the bullet has one.

 

[Sniper338]

I guess ill just have to load up a batch of rounds today then... darn.. lol

 

[barefooter56]

Sniper338,
If you are using Redding bushings go .001-.002 under the measurement across the neck of a loaded round. L.E.Wilson bushings go .003-.004 under. If you are loading for a repeating rifle we suggest you load up a couple "dummy" rounds to what you will be loading all your rounds too and fire a couple rounds with them in the magazine. Re-measure them to see if they have set out or set back in the neck of the cartridge. If they have go to the next size SMALLER bushing. You will probably end up with a spread of bushing sizes to compensate for different manufacturers of brass and as the cartridge gets firings on it to retain the same neck tension as you started with when they were new. This goes for cartridge cases with turned and un-turned necks too. If you have any more questions on this please feel free to contact us in this string or at TechSupport @bergerbullets.com
Take care!
Phil Hoham
Berger Bullet Tech.

 

[Sniper338]

Sniper338,
If you are using Redding bushings go .001-.002 under the measurement across the neck of a loaded round. L.E.Wilson bushings go .003-.004 under. If you are loading for a repeating rifle we suggest you load up a couple "dummy" rounds to what you will be loading all your rounds too and fire a couple rounds with them in the magazine. Re-measure them to see if they have set out or set back in the neck of the cartridge. If they have go to the next size SMALLER bushing. You will probably end up with a spread of bushing sizes to compensate for different manufacturers of brass and as the cartridge gets firings on it to retain the same neck tension as you started with when they were new. This goes for cartridge cases with turned and un-turned necks too. If you have any more questions on this please feel free to contact us in this string or at TechSupport @bergerbullets.com
Take care!
Phil Hoham
Berger Bullet Tech.

cool thanks! Im gonna be pushing these 300gr otms's

 

[Sniper338]

Loaded rounds measured .366 so I guess I will go ahead and order a .364 bushing after this weekend. I'm going to put a few rounds down the pipe with the few I loaded up and check it all and see how much it expands if any. Thanks for the info!

 

[Brewz]

I usually hate just posting a link as an answer, but I recently asked a similar question and found this very helpful

http://www.accurateshooter.com/technical-articles/reloading/neck-tension-not-just-bushing-size/

Its a very good article!