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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Allen vs. 338 Snipe tac vs. 338 XT - Which one?
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<blockquote data-quote="edward hogan" data-source="post: 300720" data-attributes="member: 1341"><p>Hi Kirby,</p><p></p><p>I did try to put in a disclaimer:</p><p>"I realize they are far from biggest/baddest and were no where near 1mi capable rifles....</p><p>Just posting this to mention the other side of the equation.."</p><p></p><p>As far as velocity, don't own a chronograph so not really too sure. I extrapolated my data from the .330 and 300 Dakota ctgs which have same capacity and the .340 and .300 Weatherby ctgs which are identical in dimension except for neck diameter. I expect that the 250gr bullets provide about 2800fps with the max load I worked up. Have lots of XMR4350 and am happy with the power band in this cartridge. </p><p></p><p>Have not tried any 300gr bullets yet. Haven't even really kept up with cutting edge bullet development in the .338. Been pretty hard to get bullets anywhere. Probably will order some Matchkings to try out first.</p><p></p><p>In theory, the .338/300 should, if given enough elevation adjustment, be able to acquit itself pretty well at extreme distance shooting a high BC bullet. Maybe my 1:10 3groove pac-nor is a tad too slow? Seems most are going 1:9.4 these days...</p><p></p><p>I ordered the barrel on a pre-fit basis from Pac-Nor chambered for the .338Win with them knowing I would improve the barrel to .338/300. I chambered the barrel to a minimum oal dimension which is what i have seen provides best accuracy and assures headspacing on shoulder rather than belt. Since there's no SAAMI chamber dimension for .338/300 I use virgin .300mag Win cases and an RCBS Precision Mic. I chamber so the case expands about .005 over the average measurement I get in the Mic for virgin cases.</p><p></p><p>Not a blistering flat-shooting Big Honcho of a round, but one that is very versatile. Something I found the big guy ctgs weren't.</p></blockquote><p></p>
[QUOTE="edward hogan, post: 300720, member: 1341"] Hi Kirby, I did try to put in a disclaimer: "I realize they are far from biggest/baddest and were no where near 1mi capable rifles.... Just posting this to mention the other side of the equation.." As far as velocity, don't own a chronograph so not really too sure. I extrapolated my data from the .330 and 300 Dakota ctgs which have same capacity and the .340 and .300 Weatherby ctgs which are identical in dimension except for neck diameter. I expect that the 250gr bullets provide about 2800fps with the max load I worked up. Have lots of XMR4350 and am happy with the power band in this cartridge. Have not tried any 300gr bullets yet. Haven't even really kept up with cutting edge bullet development in the .338. Been pretty hard to get bullets anywhere. Probably will order some Matchkings to try out first. In theory, the .338/300 should, if given enough elevation adjustment, be able to acquit itself pretty well at extreme distance shooting a high BC bullet. Maybe my 1:10 3groove pac-nor is a tad too slow? Seems most are going 1:9.4 these days... I ordered the barrel on a pre-fit basis from Pac-Nor chambered for the .338Win with them knowing I would improve the barrel to .338/300. I chambered the barrel to a minimum oal dimension which is what i have seen provides best accuracy and assures headspacing on shoulder rather than belt. Since there's no SAAMI chamber dimension for .338/300 I use virgin .300mag Win cases and an RCBS Precision Mic. I chamber so the case expands about .005 over the average measurement I get in the Mic for virgin cases. Not a blistering flat-shooting Big Honcho of a round, but one that is very versatile. Something I found the big guy ctgs weren't. [/QUOTE]
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338 Allen vs. 338 Snipe tac vs. 338 XT - Which one?
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