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Rifles, Reloading, Optics, Equipment
Reloading
Efficiency question about guns....
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<blockquote data-quote="Timber338" data-source="post: 1053066" data-attributes="member: 33822"><p>I totally hear where you're coming from, I really like efficient rifles. My ultralight pack rifle is based on a WSM cartridge on a short action. It is very fast in the thick forests, so light you don't even notice it, and you don't sacrifice too much bullet performance. All around a very efficient package. While it is very accurate, it's light weight and short barrel limit it's effective range on game.</p><p></p><p>So I think each cartridge (.308 family, WSM, win mag, RUM, etc) is best optimized in different platforms. A .308 win long range hunting rifle is never going to run with a 300 RUM if they are built to the same exact specs. The RUM is always going to carry more energy, shoot flatter and drift less in the wind at extended ranges.</p><p></p><p>I like the point you bring up, I just don't think it's fair to compare a 27" 300 win mag to a 26" 300 RUM. If those are my choices I'll always go with the win mag like you are pointing out. I don't think your buddy is optimizing the potential of his RUM with only a 26" barrel. A 28-30" barrel is going to make better use of all that powder and I think will push the 230 around the 3100 fps mark. </p><p></p><p>But aside from all those details, I think that one thing overlooked here is energy. Efficiency is based on energy in vs energy out.... so velocity is simply the wrong metric to track if you're trying to compare efficiency between two different rifles/cartridges. If you build an optimized 300 RUM and are getting 3100 fps with the 230 berger compared to the 2844 from the win mag, you are putting in 28% more powder for only a 9% gain in velocity, but nearly 19% gain in energy. </p><p></p><p>It's obviously true that larger cartridges are never as efficient as smaller ones shooting the same bullet, but when you look at energy and build the rifle to best optimize the cartridge, the larger cartridges really are not all that bad. And if you want/need the performance, like energy at long range to kill an elk, you have to be willing to sacrifice something....</p></blockquote><p></p>
[QUOTE="Timber338, post: 1053066, member: 33822"] I totally hear where you're coming from, I really like efficient rifles. My ultralight pack rifle is based on a WSM cartridge on a short action. It is very fast in the thick forests, so light you don't even notice it, and you don't sacrifice too much bullet performance. All around a very efficient package. While it is very accurate, it's light weight and short barrel limit it's effective range on game. So I think each cartridge (.308 family, WSM, win mag, RUM, etc) is best optimized in different platforms. A .308 win long range hunting rifle is never going to run with a 300 RUM if they are built to the same exact specs. The RUM is always going to carry more energy, shoot flatter and drift less in the wind at extended ranges. I like the point you bring up, I just don't think it's fair to compare a 27" 300 win mag to a 26" 300 RUM. If those are my choices I'll always go with the win mag like you are pointing out. I don't think your buddy is optimizing the potential of his RUM with only a 26" barrel. A 28-30" barrel is going to make better use of all that powder and I think will push the 230 around the 3100 fps mark. But aside from all those details, I think that one thing overlooked here is energy. Efficiency is based on energy in vs energy out.... so velocity is simply the wrong metric to track if you're trying to compare efficiency between two different rifles/cartridges. If you build an optimized 300 RUM and are getting 3100 fps with the 230 berger compared to the 2844 from the win mag, you are putting in 28% more powder for only a 9% gain in velocity, but nearly 19% gain in energy. It's obviously true that larger cartridges are never as efficient as smaller ones shooting the same bullet, but when you look at energy and build the rifle to best optimize the cartridge, the larger cartridges really are not all that bad. And if you want/need the performance, like energy at long range to kill an elk, you have to be willing to sacrifice something.... [/QUOTE]
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Efficiency question about guns....
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