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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
The .338 Rogue
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<blockquote data-quote="Pdvdh" data-source="post: 1215723" data-attributes="member: 4191"><p>Thanks for the info on the N570 powder Ray. I know quite a few do prefer N570.</p><p></p><p>I broke into a new container (Lot) of RL 33 yesterday. The new Lot of powder is burning at a slightly faster rate. I had to reduce my powder charges slightly to keep from over-pressuring compared to the prior Lot of RL 33. 107gr with the new Lot of RL 33 was definitely running too high - pressure wise. The only shell I fired at 107gr registered 3015fps MV with the Berger 300gr OTM. First load I've fired with significantly elevated pressure. Still no case head markings from the bolt face, but increased bolt lift pressure and primer flow were apparent. Also, the case head of this casing swelled 0.001" with that single shot. Simply too hot.</p><p></p><p>It appears <u>I'm going to be operating with a MV in the 2935-2945fps</u> range <u>shooting the 300gr Berger OTMs</u>, with a <u>maximum charge of ~105.5gr RL 33</u>. This barrel seems more stable there, both on target and with uniformity of MVs. Reduced ES/SD at these MVs. My barrel is a little on the light side, compared to many dedicated 338 LAIs.</p><p></p><p>The recoil on my rifle is stiff, but I still seem to be able to shoot groups without getting recoil headaches. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Which is a very good thing. I wouldn't want to shoot these 300gr bullets at these MVs in a much lighter rifle.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1215723, member: 4191"] Thanks for the info on the N570 powder Ray. I know quite a few do prefer N570. I broke into a new container (Lot) of RL 33 yesterday. The new Lot of powder is burning at a slightly faster rate. I had to reduce my powder charges slightly to keep from over-pressuring compared to the prior Lot of RL 33. 107gr with the new Lot of RL 33 was definitely running too high - pressure wise. The only shell I fired at 107gr registered 3015fps MV with the Berger 300gr OTM. First load I've fired with significantly elevated pressure. Still no case head markings from the bolt face, but increased bolt lift pressure and primer flow were apparent. Also, the case head of this casing swelled 0.001" with that single shot. Simply too hot. It appears [U]I'm going to be operating with a MV in the 2935-2945fps[/U] range [U]shooting the 300gr Berger OTMs[/U], with a [U]maximum charge of ~105.5gr RL 33[/U]. This barrel seems more stable there, both on target and with uniformity of MVs. Reduced ES/SD at these MVs. My barrel is a little on the light side, compared to many dedicated 338 LAIs. The recoil on my rifle is stiff, but I still seem to be able to shoot groups without getting recoil headaches. :) Which is a very good thing. I wouldn't want to shoot these 300gr bullets at these MVs in a much lighter rifle. [/QUOTE]
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The .338 Rogue
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