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Hunting
The Basics, Starting Out
300 win mag advise
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<blockquote data-quote="MagnumManiac" data-source="post: 1394694" data-attributes="member: 10755"><p>Welcome and enjoy our friendly forum.</p><p></p><p>I have a very similar situation in my Kimber 8400, the 180gr Accubond I run in it needs to be 3.550" to touch the rifling, my mag box is 3.400", I load them to 3.390" just like you to fit the mag.</p><p>I have found that doing the normal seating depth test of a starting load and seating bullets IN by .010" in 3-4 increments often finds that the mag length max is about right. Then just do normal work up and pick the tightest group.</p><p>There really is no hard and fast rule that best accuracy is found with EVERY bullet being close to the rifling, in fact, Berger recommends a long jump with their Hybrid type bullets.</p><p></p><p>Oh, and there is nothing wrong with your rifle, some manufacturers feel there is less possibilty of a problem arising with high pressure when a long throat is used.</p><p>All of my comp barrels have longer</p><p>throats than SAAMI for this very reason.</p><p></p><p>Cheers.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1394694, member: 10755"] Welcome and enjoy our friendly forum. I have a very similar situation in my Kimber 8400, the 180gr Accubond I run in it needs to be 3.550” to touch the rifling, my mag box is 3.400”, I load them to 3.390” just like you to fit the mag. I have found that doing the normal seating depth test of a starting load and seating bullets IN by .010” in 3-4 increments often finds that the mag length max is about right. Then just do normal work up and pick the tightest group. There really is no hard and fast rule that best accuracy is found with EVERY bullet being close to the rifling, in fact, Berger recommends a long jump with their Hybrid type bullets. Oh, and there is nothing wrong with your rifle, some manufacturers feel there is less possibilty of a problem arising with high pressure when a long throat is used. All of my comp barrels have longer throats than SAAMI for this very reason. Cheers. :) [/QUOTE]
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300 win mag advise
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