Crimp question

[pepperbelly]

I think I know this but want to check and be sure.
I do NOT need to crimp .308 when used in a bolt rifle- correct?

Jim

 

[el gordo2]

Re: Crimp question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pepperbelly</div><div class="ubbcode-body"> I think I know this but want to check and be sure.
I do NOT need to crimp .308 when used in a bolt rifle- correct?

Jim </div></div>


and a hush falls amongst the the audience........YOU ARE CORRECT SIR!

 

[pepperbelly]

Re: Crimp question

Even a blind squirrel can find a nut if it doesn't fall too far from the tree.

Thanks,
Jim

 

[Wil]

Re: Crimp question

if you use the correct neck tension... a crimp is unnecessary...

 

[pepperbelly]

Re: Crimp question

Wil, can you explain that?

Jim

 

[Wil]

Re: Crimp question

when you size the case the neck gets squeezed down to a certain diameter...

measure that....

when you seat teh bullet that diameter will change...

measure it...


the difference will tell you your neck tension..

example:

you resize & your neck mics at .333
seat a bullet & it reads .335

that give you a .002 neck tension (what most use)

that is sufficient to keep the bullet from moving around... no crimp necessary...

however some autoloaders (ar10) like a light crimp to ensure teh bullet doesn't slip under recoil in the mag... causing the bullet to push back in teh case & creating a dangerous pressure spike...

not a problem in bolt guns

 

[pepperbelly]

Re: Crimp question

Thank you sir!

Jim

 

[Wil]

Re: Crimp question

no worries... give a shout if you have any questions... I'm here to help....