+P designation in Rifle Calibers

[Bullrdr82]

I know I should know this answer, but either my brain is full, and this was pushed out, or it is buried deep deep deep within the confinds and there is no getting it back.

I have a .257 Roberts. Custom action (Mauser Replica made by Joe Beil).

I have been looking online and in local stores for ammo, and I see ALOT of .257 Roberts +P but not a lot of standard.

My understanding is your firearm must be stamped for +P to ensure it can withstand the added pressure, or is it just a matter of the cases must be +P cases, and the firearm will shoot any of them without damage?

[Artos]

+P is more common within the pistol range of cartridges...that is why you will seldom see a rifle marked with a +P.


The reason you have it in Roberts ammo is original factory ammo was pretty weak & some of the guns mfg / converted were made based on what was available...most any of your better made rifles will handle any Roberts ammo just fine.

If you are still concerned, I would have a smith check it out but it sounds like a quality weapon you have.

[dustoffer]

Contact the action's manufacturer and ask the question--

[meltingfeather]

+P is more common within the pistol range of cartridges...that is why you will seldom see a rifle marked with a +P.


The reason you have it in Roberts ammo is original factory ammo was pretty weak & some of the guns mfg / converted were made based on what was available...most any of your better made rifles will handle any Roberts ammo just fine.

If you are still concerned, I would have a smith check it out but it sounds like a quality weapon you have.

Ding!