What are the best?? I am thinking the .243 AI is probably the best from looking at different ballistics.
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It very well may be, particularly from an efficiency standpoint. The 240 Weatherby is a little faster, but brass is expensive and barrel life is shorter. The 6MM-284 is a little faster yet and is capable of phenomenal long range accuracy, but has only about a 1200 round barrel life.
I personally shoot the 6MM-284 and try to avoid high volume varmint hunting pursuits. I got ten years out of my last barrel. Best long range coyote, antelope, and deer combo caliber out there, IMO.
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RE: Fast 6mm's
ive been shooting a 6mm rem now for a little over a year now using 85 grain gamekings. between targets, P-dogs and coyotes its been shot alot I would estimate 2,000 rounds over the last year. Im gonna give it a break and put it away it shoots phenominally thats probably why I shot it so much I dont want to wear it out, originally it was gonna be a pronghorn and coue's deer gun which now thats likely what I will only use it for now except maybe a yote or two a year. Im now looking at buying 243 which i will probably use the 85 grain gamekings in aswell the 243 isnt much of a loss of performance compared to the 6mm but this one will be primarily a varmint rig with better barrel life.
IMO if you want a fast 6mm where brass is relatively inexpensive and barrel life shouldnt be to bad I would AI improve the 6mm rem.
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I have been considering a 6.5 X 284 Encore barrel for what I consider long range varminting(550 yards max). However the 6 X 284 sounds interesting? Tom.
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What are the best?? I am thinking the .243 AI is probably the best from looking at different ballistics.
I certainly concur that the 6mm/.284 is an excellent round. It will easily equal the ballistics of the .240 Weatherby Magnum, and is more accurate to boot. I can get 3350 with 100-grain bullets and 3500 from 85-grain bullets from my26" barrel in that caliber, and looky how it shoots! That's a 5-shot group, and there are others just as small.....
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The 6mm/.284 sounds like a great round but it is too long. I'm looking at the Howa/Christensen Varminter, Tikka varminter, and the Winchester Coyote lite. And they don't come in that caliber and it would probably be too hard to rechamber one. So I'm thinking the .243 Win and then blow it out to the Ackley Improved. What do ya guys think??
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I think what jeepkid is asking is that he wants a standard factory rifle in 243 and then have its chamber reamed to the AI version.This would be a little more economical that have a new rifle re-barreled. That would'nt be a bad idea if funds were limited.
Back to the 6mm-284, I had onebuilt 14 years ago and have had very good results with it as a varminter and a deer rifle. It shot like "a house of fire" with the now discontinued Barnes 75gr X bullet..here's it's best group. With the Nosler 95 gr Ballistic Tip it's like a death ray on deer.
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Fast 6mm's
