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Rifles, Reloading, Optics, Equipment
Reloading
300 wby help
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<blockquote data-quote="rsnell" data-source="post: 1977792" data-attributes="member: 84903"><p>Weatherby recommends using a Federal 215 primer for most of their rifles. Is your chamber a standard Weatherby chamber? The standard Weatherby 300 magnum has a free bore of 0.361 inches.</p><p></p><p>About 40 years ago I was loading a 180 grain Nosler partition using IMR 4831 and Federal 215 primers. I seated the bullet to the cannelure and getting 5 shot that did not exceed 0.75 inches. I tried a CCI magnum primer and the groups expanded to 3 inches. The Weatherby chambers shoot with a long jump.</p></blockquote><p></p>
[QUOTE="rsnell, post: 1977792, member: 84903"] Weatherby recommends using a Federal 215 primer for most of their rifles. Is your chamber a standard Weatherby chamber? The standard Weatherby 300 magnum has a free bore of 0.361 inches. About 40 years ago I was loading a 180 grain Nosler partition using IMR 4831 and Federal 215 primers. I seated the bullet to the cannelure and getting 5 shot that did not exceed 0.75 inches. I tried a CCI magnum primer and the groups expanded to 3 inches. The Weatherby chambers shoot with a long jump. [/QUOTE]
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300 wby help
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