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Long Range Hunting & Shooting
300 RUM or 338 EDGE
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 475207" data-attributes="member: 505"><p>Camshaft, I love my 300 RUM also and you are just fine with that one. My point is the next two you test the 338 RUM may be going 2850 fps and the 338-300 RUM going 2750 fps. Now the 338 RUM is going to have the best numbers. Both can shoot the 300 smk 2850 fps out of a 30" barrel. Where the best accuracy ends up in your particular gun who knows. Most between 2750-2850 in both with 30" barrels. I have shot both extensively and hunted with both. In a hunting situation they are the same thing and no person would ever know the difference between them in a hunting situation. Step up to the 378 wby case or something equivalent and then you definitely notice a difference. </p><p> </p><p>I have been there and done that 10 years ago when the 338 RUM came out. That is why I quit building the 338-300 in 2001. The purpose of a wildcat is to gain something which the 338-300 RUM did over the 340 wby when I started doing it in late 1998. It was the most powerful easily obtainable 338 you could build on a standard magnum action at that time. But in 2001 when the 338 RUM came out it did the same thing the 338-300 would do and it was over the counter. No point in the trouble of a wildcat cartridge when you can get basically the same thing over the counter. If a guy wants more power he needs to go up to one of the others I mentioned because you may or may not get an improvement over the 338 RUM by going with the 338-300 RUM. Technically, because of a slight increase in powder capacity the 338-300 might average a couple more fps than the 338 RUM if you just loaded both until they blew primer pockets. But in real world shooting they shoot basically the same numbers. Certainly not enough for one to have an advantage over the other. If there was I would not have quit fooling with it.</p><p> </p><p>With big 338's it takes quite a bit more powder to make a difference. 15-20 grains more powder in the big cases make a difference. 2-3 grains do not. The ultramags just barely beat the 340 wby. There is about 100 fps on average between the 340 wby and the 338 and 338-300 RUM's. The accuracy load in my 28" barrel 340 wby is 2735 fps with a 300 smk. That is right in there with some lapua's and RUM's. There is just not a lot of difference in the big 338's until you get to the huge cases that can burn a lot of slow burning powder in long barrels.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 475207, member: 505"] Camshaft, I love my 300 RUM also and you are just fine with that one. My point is the next two you test the 338 RUM may be going 2850 fps and the 338-300 RUM going 2750 fps. Now the 338 RUM is going to have the best numbers. Both can shoot the 300 smk 2850 fps out of a 30" barrel. Where the best accuracy ends up in your particular gun who knows. Most between 2750-2850 in both with 30" barrels. I have shot both extensively and hunted with both. In a hunting situation they are the same thing and no person would ever know the difference between them in a hunting situation. Step up to the 378 wby case or something equivalent and then you definitely notice a difference. I have been there and done that 10 years ago when the 338 RUM came out. That is why I quit building the 338-300 in 2001. The purpose of a wildcat is to gain something which the 338-300 RUM did over the 340 wby when I started doing it in late 1998. It was the most powerful easily obtainable 338 you could build on a standard magnum action at that time. But in 2001 when the 338 RUM came out it did the same thing the 338-300 would do and it was over the counter. No point in the trouble of a wildcat cartridge when you can get basically the same thing over the counter. If a guy wants more power he needs to go up to one of the others I mentioned because you may or may not get an improvement over the 338 RUM by going with the 338-300 RUM. Technically, because of a slight increase in powder capacity the 338-300 might average a couple more fps than the 338 RUM if you just loaded both until they blew primer pockets. But in real world shooting they shoot basically the same numbers. Certainly not enough for one to have an advantage over the other. If there was I would not have quit fooling with it. With big 338's it takes quite a bit more powder to make a difference. 15-20 grains more powder in the big cases make a difference. 2-3 grains do not. The ultramags just barely beat the 340 wby. There is about 100 fps on average between the 340 wby and the 338 and 338-300 RUM's. The accuracy load in my 28" barrel 340 wby is 2735 fps with a 300 smk. That is right in there with some lapua's and RUM's. There is just not a lot of difference in the big 338's until you get to the huge cases that can burn a lot of slow burning powder in long barrels. [/QUOTE]
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300 RUM or 338 EDGE
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