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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bore wear on Weatherby 338/378
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<blockquote data-quote="RDM416" data-source="post: 510763" data-attributes="member: 3745"><p>In one of my 338 Khans' (improved 338/378 wby) I have been loading 102 grn of Retumbo for 2875fps out of a 27" barrel. This is a pretty mild load intended to keep the 300 grain Bergers below 2900fps. You could back off that to 100 grn if you wanted to reduce the speed to around 2700 or so. I have not been shooting Retumbo in this rifle but for about a year now, it is giving me good accuracy and temp stability. </p><p></p><p>I agree with LTLR on RL 25, 96 grains is pretty low. I am loading 108 grn of RL 25 under a 250 SMK. I would think that 100 to 102 grn might get you what you want with RL 25.</p><p></p><p>I just had one of my Khans re-barreled after 1500 rounds. It was still shooting very sub-moa groups, but they were beginning to open up and I knew it was just a matter of time so I went ahead and had a new barrel put on. That was 1500 rounds at MAX loads. If you load it down as you are talking about, as the others have said, you will extend the barrel life considerably.</p></blockquote><p></p>
[QUOTE="RDM416, post: 510763, member: 3745"] In one of my 338 Khans' (improved 338/378 wby) I have been loading 102 grn of Retumbo for 2875fps out of a 27" barrel. This is a pretty mild load intended to keep the 300 grain Bergers below 2900fps. You could back off that to 100 grn if you wanted to reduce the speed to around 2700 or so. I have not been shooting Retumbo in this rifle but for about a year now, it is giving me good accuracy and temp stability. I agree with LTLR on RL 25, 96 grains is pretty low. I am loading 108 grn of RL 25 under a 250 SMK. I would think that 100 to 102 grn might get you what you want with RL 25. I just had one of my Khans re-barreled after 1500 rounds. It was still shooting very sub-moa groups, but they were beginning to open up and I knew it was just a matter of time so I went ahead and had a new barrel put on. That was 1500 rounds at MAX loads. If you load it down as you are talking about, as the others have said, you will extend the barrel life considerably. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
bore wear on Weatherby 338/378
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