[Kyrie]

Originally Posted by mrerick

Assuming that they use their own components and powder, you can look up all the powders that Winchester offers on the Hodgdon site.

https://www.hodgdonreloading.com/data/pistol


None of these powders at their max load approach 1,300 FPS in a 115gn projectile.

This is more of a sub-machine gun load than a pistol load. Similar to "NATO" power... They quote pressure 15% higher than standard velocity 9mm Luger for this new round.

NATO 9mm develops 36,500PSI pressure. Normal 9mm is 34,100 PSI (CIP standards).

Reference to the SAAMI standards show that this round is above _+P loadings...

https://saami.org/wp-content/uploads...sting-Copy.pdf

Here's the Winchester site for the round with a picture of the box:

https://winchester.com/Products/Ammu...uty-/WIN9MHSCL

And discussion of the new M1152 round:

https://www.guns.com/news/2019/11/12...ctive-duty-9mm

Respectfully suggest a great deal of caution with this kind of comparison.

Caveat 1:
There is really no such thing as “sub-machinegun ammunition”, as such. Sub-machineguns are just fully automatic firearms that fire a pistol cartridge. Countries that field sub-machineguns and pistols don’t have different types of cartridges for each.

Caveat 2:
There is no such thing as a single NATO standard 9x19 load. Different NATO signatories load their ammunition (pistol or rifle) to whatever standards they feel best meets their military goals.

Caveat 3:
CIP and SAMMI chamber pressures are measured using different methodologies and procedures and cannot be meaningfully compared.

Caveat 4:
Military ammunition is not subject to commercial laws, is usually made to perform to military standards, and may or may not be pressure tested using commercial policies, procedures or methods. This means that any extant published pressure data for military ammunition is irreconcilable with published pressures for commercial ammunition.

Caveat 5:
While chamber pressures and muzzle velocities are related, that relationship is neither direct nor linear. Higher chamber pressures don’t always result in higher muzzle velocities. Lower chamber pressures don’t always result in lower muzzle velocities.