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Short Mag fps
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<blockquote data-quote="goodgrouper" data-source="post: 203339" data-attributes="member: 2852"><p>Good info but I would like to point out a couple things. N550 achieves 3000 fps with 165's in your gun. I can get that same bullet to 3000 fps with IMR4007ssc and it is much easier on the barrel. But either way, 30-06 can do pretty much the same thing with this bullet. If factory 180's in the WSM go over 3000, why is it we can't get much over 3000 with 165's from handloads? I'll tell you why. Ball powders. Factory ammo is loaded with ball powder and it is dense enough to pack a lot more in than a stick powder and it gives more velocity as a result. Only problem is that for handloading, I don't want to use ball powders. So that puts the expansion ratio of the 300 WSM with 165's or 180's right in the crapper for non-triple based stick powders if you want speed.</p><p></p><p>Secondly, you are loading ammo for Win model 70's. That is just about the longest box magazine out there for a factory gun. This allows you to move the bullet out of the case a bit and gain some case capacity back. Win's reamer for the WSM's can be longer in the throat because of the magazine. It is really the way all the other companies should have done their WSM's. But Remington, Ruger, and Browning guns basically reduce your capacity to 63 grains max with a big stick powder like RL19 and I have yet to see that give velocities of factory ammo.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 203339, member: 2852"] Good info but I would like to point out a couple things. N550 achieves 3000 fps with 165's in your gun. I can get that same bullet to 3000 fps with IMR4007ssc and it is much easier on the barrel. But either way, 30-06 can do pretty much the same thing with this bullet. If factory 180's in the WSM go over 3000, why is it we can't get much over 3000 with 165's from handloads? I'll tell you why. Ball powders. Factory ammo is loaded with ball powder and it is dense enough to pack a lot more in than a stick powder and it gives more velocity as a result. Only problem is that for handloading, I don't want to use ball powders. So that puts the expansion ratio of the 300 WSM with 165's or 180's right in the crapper for non-triple based stick powders if you want speed. Secondly, you are loading ammo for Win model 70's. That is just about the longest box magazine out there for a factory gun. This allows you to move the bullet out of the case a bit and gain some case capacity back. Win's reamer for the WSM's can be longer in the throat because of the magazine. It is really the way all the other companies should have done their WSM's. But Remington, Ruger, and Browning guns basically reduce your capacity to 63 grains max with a big stick powder like RL19 and I have yet to see that give velocities of factory ammo. [/QUOTE]
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