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Bart B. · August 10, 2013, 02:37 PM

Normally, rifle bullets weighing less than 300 grains don't need to be crimped in for sporting use.

That said, a 5-pound .300 Weatherby Magnum may need its 250-grain solid behemoth buster bullets crimped in.

However, if your preferred tools and techniques of using them to reload fired rifle cases produce better results for you by crimping in the bullets, by all means do so.

Steve, what Sierra Matchking bullets have a cannelure for crimping? That's news to me if it's a fact. Sierra Bullets proved crimping their Matchking bullets made them shoot less accurate resulting in Lee adding a comment in their documentation saying something about don't crimp Matchking bullets in place.

August 10, 2013, 02:37 PM	#9
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Normally, rifle bullets weighing less than 300 grains don't need to be crimped in for sporting use. That said, a 5-pound .300 Weatherby Magnum may need its 250-grain solid behemoth buster bullets crimped in. However, if your preferred tools and techniques of using them to reload fired rifle cases produce better results for you by crimping in the bullets, by all means do so. Steve, what Sierra Matchking bullets have a cannelure for crimping? That's news to me if it's a fact. Sierra Bullets proved crimping their Matchking bullets made them shoot less accurate resulting in Lee adding a comment in their documentation saying something about don't crimp Matchking bullets in place. Last edited by Bart B.; August 10, 2013 at 05:08 PM.