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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
18-20" 300 RUM: change my mind..
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<blockquote data-quote="yorke-1" data-source="post: 2635284" data-attributes="member: 11960"><p>I see more unburned powder in a 45-70 barrel after each shot than I've ever seen from a short barreled magnum.</p><p></p><p>I've taken the short barrel magnum concept to the extreme, and I know Ernie has as well. I've never really seen the increase in muzzle flash, or any unburned powder flying out of the barrel. Just for fun, this video compares the same load in a 30" barrel and a 20" barrel. These guns are both shooting 140gr of H50bmg and a 300gr OTM. There aren't a lot of powders out there slower than H50bmg, so this is a pretty good test of the short barrel/slow powder myth.</p><p></p><p>[MEDIA=youtube]8qj7MSxkFek[/MEDIA]</p><p></p><p>Here's a less extreme example, but still a good one. This is 76.5gr of H4350 behind a 250gr bullet from an 18" barrel. The muzzle flash really isn't that significant.</p><p></p><p>[MEDIA=youtube]wsrGTbNMxAg[/MEDIA]</p><p></p><p>I'll bring a big white sheet the next time I bring out the 338/408 Improved pistol. I might need to bring 10-15 tent stakes to try and hold the sheet down, but I'll lay it out in front of the muzzle to see if there's any unburned powder on the ground. I've never done that, so it's a good idea for a test.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 2635284, member: 11960"] I see more unburned powder in a 45-70 barrel after each shot than I've ever seen from a short barreled magnum. I've taken the short barrel magnum concept to the extreme, and I know Ernie has as well. I've never really seen the increase in muzzle flash, or any unburned powder flying out of the barrel. Just for fun, this video compares the same load in a 30" barrel and a 20" barrel. These guns are both shooting 140gr of H50bmg and a 300gr OTM. There aren't a lot of powders out there slower than H50bmg, so this is a pretty good test of the short barrel/slow powder myth. [MEDIA=youtube]8qj7MSxkFek[/MEDIA] Here's a less extreme example, but still a good one. This is 76.5gr of H4350 behind a 250gr bullet from an 18" barrel. The muzzle flash really isn't that significant. [MEDIA=youtube]wsrGTbNMxAg[/MEDIA] I'll bring a big white sheet the next time I bring out the 338/408 Improved pistol. I might need to bring 10-15 tent stakes to try and hold the sheet down, but I'll lay it out in front of the muzzle to see if there's any unburned powder on the ground. I've never done that, so it's a good idea for a test. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
18-20" 300 RUM: change my mind..
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