Peterson Unprimed Rifle Brass in .257 Weatherby Magnum (brand part no. 40063-R) brings match-grade case quality to one of the fastest quarter-bore magnums ever fielded. Peterson Cartridge runs small-batch production lines with quality control at every step, holding the match-grade standard from the factory floor to the loading bench so handloaders get consistent, accurate, durable cases. Each box holds 50 unprimed cases ready for a handloader’s own primer, powder, and bullet choices. Among reloading brass, this Peterson lot favors hunters and long-range shooters who want their .257 Weatherby loads built on premium cases.

Key Specifications

• The cartridge is .257 Weatherby Magnum.
• The cases are unprimed, ready for the handloader’s full recipe.
• Built to a match-grade standard on small-batch production lines.
• Quality control runs throughout manufacturing for batch-to-batch consistency.
• Each box holds 50 cases.

Frequently Asked Questions

Are these cases primed? No, they ship unprimed so the handloader controls the entire load.

How many cases come in a box? This listing is a 50-count box.

Buy Peterson .257 Weatherby Magnum Brass

Match-grade cases for a fast quarter-bore magnum are exactly what this Peterson lot delivers. Order it from our Lubbock, Texas gun shop for fast shipping.