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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 differences
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 483894" data-attributes="member: 505"><p>Lapua Guy, I never did anything off the chey-tac or 50 BMG cases since I only worked with hunting weight rifles. Trying to find the best rifle that could be built in a ten pound package. I had a good friend when I lived in Colorado who did those and we had fun shooting them on his range back in the late 90's. We could make hits beyond a mile.</p><p> </p><p>I think the Lapua is the best cartridge overall of those three but if building one I would do the Lapua Improved. I have them all and as far as shooting an animal at long range there is no way the shooter or the animal would ever know the difference between the three. I just like the Lapua cartridge better for other reasons than performance.</p><p> </p><p>I did not say I have a way to get max loads to be more accurate in my rifles. What I was trying to say is that out of building numerous rifles my go to rifles I kept are the ones that performed at the top of their range after culling the others. Every rifle and barrel is different. That is why one guy gets 2730 fps with the 300 SMK and the next guy gets 2830 fps with it with all else being the same. I kept the rifles that had best accuracy on the fast side of the spectrum. When you have the money and your own shop and range you can do that. Works real nice. Like I said in that other post take ten rifles from all three and that is the velocity range. I kept the ones that performed best on the high end of that range.</p><p> </p><p>I did a guy a 340 wby one time after he shot mine and loved it. It was extremely accurate but his accuracy loads were 100 fps slower than mine. He was angry because he didn't understand that different rifles of the same chambering can easily be 100 fps different with best accuracy loads. </p><p> </p><p>That is why I say there is just not enough seperation between the three being discussed (338 RUM, 338-300 RUM and 338 Lapua) to make a call. They all three shoot basically the same numbers. If you say one is 100 fps slower than the other then you are saying it is basically the same as a 340 wby which neither of the three is. The 340 wby is 125-150 fps slower than these three on average. The 338-378 wby is 200 fps faster. The 338-378 wby will get just over 3000 fps with a 300 grain bullet. The 340 wby will get 2700 fps with it. The other three are going to hit around 2800 fps. What I am getting at is there is just not much difference in here. If you say either of the three are 100 fps faster than the other then either one is the same as a 340 wby or one is close to the 338-378 wby. Neither is true. There is not much difference with these big 338's and any of them will very effectively kill animals beyond 1000 yards. A guy needs to make his choice on other parameters besides velocity performance is all I am trying to say. I have worked with these things since the 70's and know them inside/out.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 483894, member: 505"] Lapua Guy, I never did anything off the chey-tac or 50 BMG cases since I only worked with hunting weight rifles. Trying to find the best rifle that could be built in a ten pound package. I had a good friend when I lived in Colorado who did those and we had fun shooting them on his range back in the late 90's. We could make hits beyond a mile. I think the Lapua is the best cartridge overall of those three but if building one I would do the Lapua Improved. I have them all and as far as shooting an animal at long range there is no way the shooter or the animal would ever know the difference between the three. I just like the Lapua cartridge better for other reasons than performance. I did not say I have a way to get max loads to be more accurate in my rifles. What I was trying to say is that out of building numerous rifles my go to rifles I kept are the ones that performed at the top of their range after culling the others. Every rifle and barrel is different. That is why one guy gets 2730 fps with the 300 SMK and the next guy gets 2830 fps with it with all else being the same. I kept the rifles that had best accuracy on the fast side of the spectrum. When you have the money and your own shop and range you can do that. Works real nice. Like I said in that other post take ten rifles from all three and that is the velocity range. I kept the ones that performed best on the high end of that range. I did a guy a 340 wby one time after he shot mine and loved it. It was extremely accurate but his accuracy loads were 100 fps slower than mine. He was angry because he didn't understand that different rifles of the same chambering can easily be 100 fps different with best accuracy loads. That is why I say there is just not enough seperation between the three being discussed (338 RUM, 338-300 RUM and 338 Lapua) to make a call. They all three shoot basically the same numbers. If you say one is 100 fps slower than the other then you are saying it is basically the same as a 340 wby which neither of the three is. The 340 wby is 125-150 fps slower than these three on average. The 338-378 wby is 200 fps faster. The 338-378 wby will get just over 3000 fps with a 300 grain bullet. The 340 wby will get 2700 fps with it. The other three are going to hit around 2800 fps. What I am getting at is there is just not much difference in here. If you say either of the three are 100 fps faster than the other then either one is the same as a 340 wby or one is close to the 338-378 wby. Neither is true. There is not much difference with these big 338's and any of them will very effectively kill animals beyond 1000 yards. A guy needs to make his choice on other parameters besides velocity performance is all I am trying to say. I have worked with these things since the 70's and know them inside/out. [/QUOTE]
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