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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
effeciency in 14" of barrel
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<blockquote data-quote="James Jones" data-source="post: 183058" data-attributes="member: 8843"><p>yopu can own a rifle with a barrel shorter than 16" but you have to have it registered as a "short barreled rifle" with the ATF.</p><p> </p><p>If you looking for a rifle that the barrel is gonna be 28" with the silencer then I suggest you get a better silencer !! Even a half way jimmy rigged silencer shoudlen't have to be over 10" for a 308 size round. more along the lines of 6-8</p><p>Are you planning to buy yout silencer or make it? you can file a form 1 with the BATF and once its cleared you can make your own silencer for the cost or the $200 regestration tax ,I have built several and I tell ya its nice to be able to shoot highpower rifles with little to no hearing protection.</p><p>If you gun is supposed to be "movie" quiet then the bullet can not break the speed of sound , so generaly sub sonic load are loaded to about 1000 fps and this is going to DRAMATICALY shorten you range. to maybe 100yds with a 30 cal bullet most likly 50-75yds and the trajectory is gonn be like throwing a cinder block. I don't care if you silencer is 3 feet long and 6" in diameter made with 50 K-baffels , when the bullet comes out if its going 1100 fps its gonna make a loud crack.</p><p> </p><p>But as for effeciency of the round , the bigger the bullet hole is and the less powder you have the more effecient the round will be , for instance with a coupld of my AR's one is a 16" 223 and another is a 14.5" 6mm-223 both shoot 55gr bullet realy well but the 6mm-223 will run them out faster even though the barrel is shorter , because its more effecient and differant powder is use to maximize the powder to bore ratio. I shot a 308 pistol chambered in 308 and its pretty effecient with the loads I have worked up for it , not so much with over the counter ammo. But I would say for off the shelf ammo the 308 would be good till you get to the big bores like the 45-70 and 444 Marlin and such.</p><p> </p><p>what is it your wanting this gun to do , just be quieter so its more enjoyable or as close to silent as possible?</p></blockquote><p></p>
[QUOTE="James Jones, post: 183058, member: 8843"] yopu can own a rifle with a barrel shorter than 16" but you have to have it registered as a "short barreled rifle" with the ATF. If you looking for a rifle that the barrel is gonna be 28" with the silencer then I suggest you get a better silencer !! Even a half way jimmy rigged silencer shoudlen't have to be over 10" for a 308 size round. more along the lines of 6-8 Are you planning to buy yout silencer or make it? you can file a form 1 with the BATF and once its cleared you can make your own silencer for the cost or the $200 regestration tax ,I have built several and I tell ya its nice to be able to shoot highpower rifles with little to no hearing protection. If you gun is supposed to be "movie" quiet then the bullet can not break the speed of sound , so generaly sub sonic load are loaded to about 1000 fps and this is going to DRAMATICALY shorten you range. to maybe 100yds with a 30 cal bullet most likly 50-75yds and the trajectory is gonn be like throwing a cinder block. I don't care if you silencer is 3 feet long and 6" in diameter made with 50 K-baffels , when the bullet comes out if its going 1100 fps its gonna make a loud crack. But as for effeciency of the round , the bigger the bullet hole is and the less powder you have the more effecient the round will be , for instance with a coupld of my AR's one is a 16" 223 and another is a 14.5" 6mm-223 both shoot 55gr bullet realy well but the 6mm-223 will run them out faster even though the barrel is shorter , because its more effecient and differant powder is use to maximize the powder to bore ratio. I shot a 308 pistol chambered in 308 and its pretty effecient with the loads I have worked up for it , not so much with over the counter ammo. But I would say for off the shelf ammo the 308 would be good till you get to the big bores like the 45-70 and 444 Marlin and such. what is it your wanting this gun to do , just be quieter so its more enjoyable or as close to silent as possible? [/QUOTE]
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effeciency in 14" of barrel
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