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Posted: 9/23/2009 7:21:09 AM EDT
| 1st of all i dont re-load. You guys can tell by this question.. ha ha.. what cal. of rifle can i re-load a 90 grain bullet that will shoot the fastest fps ? and what is that fps at the muzzel ? i am looking for one fast coyote load in the wind. thanks. marty |
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Lol nice 
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I shoot 80 grain Berger VLDs out of my .22-6mm Ackley Improved at about 3600 fps. You aren't going to get much faster than that, without serious throat erosion. My .220 Swifts can't even touch it with heavier bullets. Your reason is the same reason that I had the rifle built...for long distance, windy Wyoming coyote calling. I have a couple of .220 Swifts...one is a factory barreled 1 in 14" twist that spits fir with lighter bullets. I had another rebarreled with a 1 in 9" twist barrel to shoot heavier bullets, and that worked well, and still does, but my current long range coyote gun in my .22-6mm AI. BTW, this caliber is still really hard on barrels. |
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Quoted:
1st of all i dont re-load. You guys can tell by this question.. ha ha.. what cal. of rifle can i re-load a 90 grain bullet that will shoot the fastest fps ? and what is that fps at the muzzel ? i am looking for one fast coyote load in the wind. thanks. marty Sir, WADR people have written books trying to answer such questions, perhaps that's one reason we have so many cartridge/bullet combinations to select from. I'll try to keep my answer simple by first saying there are limitations to the effectiveness of various bullet weights and the velocities at which they can be propelled. We measure a bullets efficiency in terms of Ballistic Coefficient which is a comparison of the efficiency of a given bullet compared to a theoretical 100% efficient bullet. Basically the higher the BC, usually experssed in a decimal fraction, the more efficient the bullet. What this means for your purposes is that regardless how fast you can get a given bullet of some nominal weight to go when it leaves the muzzle of your rifle the velocity decrease. How fast the velocity decreases per any given distance is a function of the BC of the bullet. The other consideration you have when examining what you may believe to be the best combination is the twist rate of the rifle barrel. The higher the velocity of the bullet and the faster the twist rate of the barrel the bullet will spin so fast it will literally disintegrate somewhere as it travels down range due to centrifugal force. What I recommend you do is check out a few of the bullet manufacturers web sites such as Sierra to see what types of bullets they make that may suit your purpose. Given a particular bullet of known BC and weight you can determine what calibers may be available be it .22, 6mm, or higher and what cartridges would be suitable for that bullet. You can also look at the reloading tables these web sites have and for any given cartridge/bullet combination see what the velocities the various loads provide. The responses you've had so far are fine as far as they go but you need to do a little more research on the subject to determine what you think best suits your needs. Otherwise the only answers you'll get to your question is an opinion of what cartridge combination one of us may use for a similar purpose. Opinions of that nature are as variable as there are those of us to respond and worth as much as you paid. HTH, 7zero1. |
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Quoted:
Quoted:
1st of all i dont re-load. You guys can tell by this question.. ha ha.. what cal. of rifle can i re-load a 90 grain bullet that will shoot the fastest fps ? and what is that fps at the muzzel ? i am looking for one fast coyote load in the wind. thanks. marty Sir, WADR people have written books trying to answer such questions, perhaps that's one reason we have so many cartridge/bullet combinations to select from. I'll try to keep my answer simple by first saying there are limitations to the effectiveness of various bullet weights and the velocities at which they can be propelled. We measure a bullets efficiency in terms of Ballistic Coefficient which is a comparison of the efficiency of a given bullet compared to a theoretical 100% efficient bullet. Basically the higher the BC, usually experssed in a decimal fraction, the more efficient the bullet. What this means for your purposes is that regardless how fast you can get a given bullet of some nominal weight to go when it leaves the muzzle of your rifle the velocity decrease. How fast the velocity decreases per any given distance is a function of the BC of the bullet. The other consideration you have when examining what you may believe to be the best combination is the twist rate of the rifle barrel. The higher the velocity of the bullet and the faster the twist rate of the barrel the bullet will spin so fast it will literally disintegrate somewhere as it travels down range due to centrifugal force. What I recommend you do is check out a few of the bullet manufacturers web sites such as Sierra to see what types of bullets they make that may suit your purpose. Given a particular bullet of known BC and weight you can determine what calibers may be available be it .22, 6mm, or higher and what cartridges would be suitable for that bullet. You can also look at the reloading tables these web sites have and for any given cartridge/bullet combination see what the velocities the various loads provide. The responses you've had so far are fine as far as they go but you need to do a little more research on the subject to determine what you think best suits your needs. Otherwise the only answers you'll get to your question is an opinion of what cartridge combination one of us may use for a similar purpose. Opinions of that nature are as variable as there are those of us to respond and worth as much as you paid. HTH, 7zero1. This is perhaps the best response to such an open ended question I have read on this forum. You sir, win the interweb award for today. |
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Quoted:
1st of all i dont re-load. You guys can tell by this question.. ha ha.. what cal. of rifle can i re-load a 90 grain bullet that will shoot the fastest fps ? and what is that fps at the muzzel ? i am looking for one fast coyote load in the wind. thanks. marty You can run 90 grain bullets in 270 Winchester. Hot loads will get them up to 3500 fps, a very few top loads can just barely exceed 3600 fps. That would pretty much cause a coyote to detonate. There might be a few faster choices, like 270 Weatherby, but the advantage would be neglibible. |
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