.270 WSM

Reloading data for .270 WSM cartridges and specifications for cases and loads in this caliber.
Product number: CID_269
Load data for caliber ".270 WSM"
The .270 Winchester Short Magnum (WSM) is a short-length magnum cartridge developed by the Winchester Repeating Arms Company in 2002. It is based on a shortened .300 Winchester Magnum case and uses a .277 caliber bullet, making it an ideal choice for those seeking powerful performance with minimal recoil.

The .270 WSM's efficient ballistics allow it to maintain flat trajectories and impressive retained energy levels at further ranges. This makes it great for hunters looking to take down large game such as elk or moose with pinpoint accuracy at extended distances. Its low recoil also makes it suitable for novice shooters learning how to shoot, while its high velocity ensures devastating knockdown power when needed.
You find .270 WSM with all common powders and bullets by clicking the 'Loads in this caliber' button above.

Technical Specifications (based on the respective safety standard - see more details in tab 'Datasheet' if available)

Caliber: .270 WSM
Cartridge Type: Rimless
Bullet Diameter: 0.277 '' | 7.04 mm
Primer Size: Large Rifle (LR)
Max. Case Length (l3):2.09'' | 53.09 mm
Max .Cartridge Length / OAL:2.86'' | 72.64 mm
Maximum Standardized Pressure:63817.6 psi | 4400 bar
The Commission internationale permanente pour l'épreuve des armes à feu portatives ("Permanent International Commission for the Proof of Small Arms" – commonly abbreviated as C.I.P.) is an international organisation which sets standards for safety testing of firearms. (The word portatives ("portable") in the name refers to the fact the C.I.P. tests small arms almost exclusively; it is ordinarily omitted from the English translation of the name.) As of 2015, its members are the national governments of 14 countries, of which 11 are European Union member states. The C.I.P. safeguards that all firearms and ammunition sold to civilian purchasers in member states are safe for the users.
To achieve this, all such firearms are first proof tested at C.I.P. accredited Proof Houses. The same applies for cartridges; at regular intervals, cartridges are tested against the C.I.P. pressure specifications at the ammunition manufacturing plants and at C.I.P. accredited Proof Houses.

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