Winchester Large Rifle Primers #8‑1/2 — Consistent, All‑Weather Ignition

Winchester Large Rifle Primers #8‑1/2 are non‑corrosive primers engineered to deliver fast, dependable ignition in rifle cartridges under a wide range of environmental conditions. Manufactured to Winchester’s exacting standards, these primers undergo rigorous testing for sensitivity and consistency at temperatures and conditions far beyond normal usage to ensure positive firing, repeatable performance, and safe reloading results.

Key features

• Reliable ignition in all conditions — formulated and tested to perform consistently in extreme temperatures and humidity.

• Non‑corrosive composition — safe for modern firearms and long‑term storage when handled properly.

• Rigorous quality control — carefully controlled primer mixture weights, strict dimensional tolerances and precise anvil heights for uniform sensitivity and performance.

• Improved sensitivity — Winchester’s manufacturing process promotes more positive firing across a broad range of rifles and actions.

• Stability and consistency — primers are tested well beyond normal operating ranges to assure stability in demanding environments.

Quantity & packaging

• Box of 1,000: 10 sleeves × 100 primers

• Box of 5,000: 5 boxes × 1,000 primers

Reloading & safety notes

• Always consult a current reloading manual for appropriate load data and primer selection before reloading. MidwayUSA and other retailers offer a wide selection of reloading manuals that include tested load data for hundreds of cartridges.

• Follow standard reloading safety practices. Using the incorrect primer type or improper loads can produce unsafe pressures.

• Store primers in a cool, dry place away from heat sources and open flame.

Manufacturer

• Brand: Winchester

• Made in the United States of America

WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.