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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
OK, I think I almost figured out what I want, couple more ????
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<blockquote data-quote="Jon A" data-source="post: 96633" data-attributes="member: 319"><p>With similar goals, this is what I'm doing and why:</p><p></p><p>300 RUM with a 27" 1:9 three groove Lilja:</p><p></p><p>27" because that's as long as I want to go for many reasons (in/out of saddle scabbard, vehicle, walking through thick brush, etc). It should be plenty for what I want to do--I currently have a 26".</p><p></p><p>1:9 because I'm about 90% sure the 240 SMK (which is my current favorite for long ranges) will perform better from this twist and I plan on shooting 250's from Richard which will likely be even longer. Shouldn't hurt terminal performance any either.</p><p></p><p>.308 instead of .338 for a couple reasons. While the .338 bore does have an advantage for terminal performance, the .308 should be more than enough thump to keep me happy on elk as far as I'll ever be able to hit them. Beyond making a bigger hole, I don't think you gain anything ballistically with the .338 bore unless you go to a bigger case--especially when Richard starts pumping out those 250's. They should be more than a match for the 300 SMK and a 300 RUM can shoot them faster than the 338 RUM can shoot a 300. Launch the 300's faster, go up to 350's, etc, and yes the .338 bore will be superior--you always gain <em>potential</em> by going bigger but in order to realize it you really need a bigger case than the 338 RUM pushing the big bullets.</p><p></p><p>And then you're talking about a huge increase in recoil. Since I don't want a brake, a light (rifle will be around 7.5 lbs bare) the 300 RUM is about all I can (or want to) comfortably handle. A 338 RUM with "normal" loads wouldn't be too much worse...but a bigger case pushing 300+ grains out at higher velocities is going to be in a whole different class. With a brake that might be fine for you, but without one I don't want to be pulling the trigger.</p><p></p><p>In short, the only reason I'd go with a 338 RUM would be if I wanted more terminal performance than the 300 RUM can give. That's as much a personal preference thing as anything--the truth is a 200 7mm would probably do everything I need to do just fine, but I <em>want</em> a 250 .308. Because I can handle that in this size of rifle. I wouldn't want to try to handle a 300 at the same velocity burning even more powder.</p></blockquote><p></p>
[QUOTE="Jon A, post: 96633, member: 319"] With similar goals, this is what I'm doing and why: 300 RUM with a 27" 1:9 three groove Lilja: 27" because that's as long as I want to go for many reasons (in/out of saddle scabbard, vehicle, walking through thick brush, etc). It should be plenty for what I want to do--I currently have a 26". 1:9 because I'm about 90% sure the 240 SMK (which is my current favorite for long ranges) will perform better from this twist and I plan on shooting 250's from Richard which will likely be even longer. Shouldn't hurt terminal performance any either. .308 instead of .338 for a couple reasons. While the .338 bore does have an advantage for terminal performance, the .308 should be more than enough thump to keep me happy on elk as far as I'll ever be able to hit them. Beyond making a bigger hole, I don't think you gain anything ballistically with the .338 bore unless you go to a bigger case--especially when Richard starts pumping out those 250's. They should be more than a match for the 300 SMK and a 300 RUM can shoot them faster than the 338 RUM can shoot a 300. Launch the 300's faster, go up to 350's, etc, and yes the .338 bore will be superior--you always gain [i]potential[/i] by going bigger but in order to realize it you really need a bigger case than the 338 RUM pushing the big bullets. And then you're talking about a huge increase in recoil. Since I don't want a brake, a light (rifle will be around 7.5 lbs bare) the 300 RUM is about all I can (or want to) comfortably handle. A 338 RUM with "normal" loads wouldn't be too much worse...but a bigger case pushing 300+ grains out at higher velocities is going to be in a whole different class. With a brake that might be fine for you, but without one I don't want to be pulling the trigger. In short, the only reason I'd go with a 338 RUM would be if I wanted more terminal performance than the 300 RUM can give. That's as much a personal preference thing as anything--the truth is a 200 7mm would probably do everything I need to do just fine, but I [i]want[/i] a 250 .308. Because I can handle that in this size of rifle. I wouldn't want to try to handle a 300 at the same velocity burning even more powder. [/QUOTE]
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OK, I think I almost figured out what I want, couple more ????
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