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View Poll Results: Better caliber for long range/ all around hunting using 140 gr bullet
6.5-06 AI 174 43.28%
280 AI 228 56.72%
Voters: 402. This poll is closed

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6.506 vs 280 AI using 140 gr bullets

 
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  #36  
Old 02-27-2010, 01:26 PM
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Join Date: Jul 2007
Location: terlton, oklahoma
Posts: 379
Re: 6.506 vs 280 AI using 140 gr bullets

I want to throw in a whole different angle on this thread no one here has mentioned the
264 win mag
6.5 Rem mag
6.5/300 RCM
and all three of them will out do your
6.5-06 6.5-06AI or the
6.5-284
If any of you have read P O Ackly's books he himself said the 6.5-06AI is not worth the trouble over the standard 6.5-06.
And one more very good calibers to look at is the 270 wsm with 130 grainers
and the 270AI
If you want speed go with a 25-06AI with 87 grainers at 3920 fps.
it's only 60 fps slower than the 257 weatherby and does it with 10 grains less powder.
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  #37  
Old 02-27-2010, 02:02 PM
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Join Date: Dec 2008
Location: Northern Id.
Posts: 3,353
Re: 6.506 vs 280 AI using 140 gr bullets

Quote:
Originally Posted by OKIE2 View Post
I want to throw in a whole different angle on this thread no one here has mentioned the
264 win mag
6.5 Rem mag
6.5/300 RCM
and all three of them will out do your
6.5-06 6.5-06AI or the
6.5-284
If any of you have read P O Ackly's books he himself said the 6.5-06AI is not worth the trouble over the standard 6.5-06.
And one more very good calibers to look at is the 270 wsm with 130 grainers
and the 270AI
If you want speed go with a 25-06AI with 87 grainers at 3920 fps.
it's only 60 fps slower than the 257 weatherby and does it with 10 grains less powder.
I would agree that all of the 6.5's that you mentioned are good options, but am confused as to how the 25-06 A.I. could be a good choice and the 6.5-06 is not worthwhile? If anything, using that logic, the 25 should be even less worthwile than the 6.5 A.I. I think the logic in Ackleys original comments about the 6.5 were based on powder availability at the time. i.e. the larger the case, the smaller the bore and the heavier the bullet, the slower the powder needed to create max velocity. With the availability of much slower powders these days, I think we have a totally different situation and in fact have had great success with the 6.5 A.I. personally. I now have a 6.5 Sherman version which is almost as big a jump over the A.I. as the A.I. was over the std. and I have gained 100+ feet per second over the A.I (my opinion and experience)....Rich
P.S. I once read an article that a "well known expert had written" which stated that the A.I. version actually produced LESS velocity in his test than the std. version. He was loading both with the same powder charge!
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  #38  
Old 02-27-2010, 06:27 PM
Silver Member
 
Join Date: Jul 2007
Location: terlton, oklahoma
Posts: 379
Re: 6.506 vs 280 AI using 140 gr bullets

"P O Ackly he himself said the 6.5-06AI is not worth the trouble over the standard 6.5-06".

now read my post again I did not say the 6.5-06 was not worth while.
as for the 25-06AI it gains 400 fps over the standard 25-06 with a 87 grainer.
so yes it is worth it.
now both of these calibers are very good ones no one can say they are not.
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  #39  
Old 02-27-2010, 06:37 PM
Platinum Member
 
Join Date: Dec 2008
Location: Northern Id.
Posts: 3,353
Re: 6.506 vs 280 AI using 140 gr bullets

Quote:
Originally Posted by OKIE2 View Post
"P O Ackly he himself said the 6.5-06AI is not worth the trouble over the standard 6.5-06".

now read my post again I did not say the 6.5-06 was not worth while.
as for the 25-06AI it gains 400 fps over the standard 25-06 with a 87 grainer.
so yes it is worth it.
now both of these calibers are very good ones no one can say they are not.
Didn't mean to ruffle feathers! As I mentioned, Ackley did not have the powders we have now so at that time, he was probably correct.......Rich
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  #40  
Old 02-27-2010, 06:44 PM
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Join Date: Nov 2008
Location: McKinney, Texas
Posts: 80
Re: 6.506 vs 280 AI using 140 gr bullets

Quote:
Originally Posted by OKIE2 View Post
"P O Ackly he himself said the 6.5-06AI is not worth the trouble over the standard 6.5-06".

now read my post again I did not say the 6.5-06 was not worth while.
as for the 25-06AI it gains 400 fps over the standard 25-06 with a 87 grainer.
so yes it is worth it.
now both of these calibers are very good ones no one can say they are not.
I have spoken to a few people that have had splitting in the neck and shoulder areas of their 25-06AI's quicker than the standard 25-06's. Has anyone else had any issues with these areas in normal loading?
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  #41  
Old 02-27-2010, 07:15 PM
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Join Date: Dec 2002
Location: mathias wv
Posts: 985
Re: 6.506 vs 280 AI using 140 gr bullets

at the same pressures the AI cartridges gain 2% in MV over the parent case, if your gaining more your pushing higher pressures, average shooters have no way of knowing what they're pressures are, so its a guess at best.
I shoot a 6.5 gibbs with a 29.5" barrel I'm running 140's at 3340 fps and I know I'm pushing it pretty hard. unheard of performance from a 270 win case but it comes at a price. will a 264 win mag do better? probably but brass isn't as cheap and it takes more powder to get it there.
RR
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  #42  
Old 02-27-2010, 09:02 PM
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Join Date: Dec 2008
Location: Northern Id.
Posts: 3,353
Re: 6.506 vs 280 AI using 140 gr bullets

Quote:
Originally Posted by Ridge Runner View Post
at the same pressures the AI cartridges gain 2% in MV over the parent case, if your gaining more your pushing higher pressures, average shooters have no way of knowing what they're pressures are, so its a guess at best.
I shoot a 6.5 gibbs with a 29.5" barrel I'm running 140's at 3340 fps and I know I'm pushing it pretty hard. unheard of performance from a 270 win case but it comes at a price. will a 264 win mag do better? probably but brass isn't as cheap and it takes more powder to get it there.
RR
I like the gentle way you mentioned a 2% gain and the equal pressure issue Barrel length of course has a lot to do with the whole equation as you know. To say that an A.I. is 400' better than a std. would take some serious differences in pressure and barrel length! I'm not surprised that you can get 3340 with your Gibbs. My Sherman case holds just a fuzz more than the Gibbs and I can exceed 3200' with a 26" barrel. As you mentioned, that's pushing it. What is your powder and charge with that particular load? I can top 3200' with retumbo 65 gr. RL22 61 gr. and RL25 64 gr.......Rich
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