Belted mag caliber & chamber support ?

[AR15KittyKat]

Never owned a belted magnum, but thinking of getting a 300WM, does the barrels's chamber support up to & stops at the belt of the round, or does the chamber actually supports the whole belt also?

 

[bigwheeler]

Re: Belted mag caliber & chamber support ?

The belt but obviously not the rim and extractor grove, which is never supported
as they are both in the primer pocket surround.

 

[coug]

Re: Belted mag caliber & chamber support ?

The belt is where head space is set so the belt will be supported all the way around the chamber.

 

[AR15KittyKat]

Re: Belted mag caliber & chamber support ?

thank you.