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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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  #71  
Old 08-02-2013, 09:27 AM
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Re: 6.506 vs 280 AI using 140 gr bullets

6.5 - 06 AI for sure It has a nice selection of bullets with great BC and no shortage of donnor brass from the 06 line up.

As to 7mm I have the best one. It is the 7STW. When a 280 or 7mag is blowing primers the 7stw is a light load
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  #72  
Old 08-02-2013, 02:31 PM
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Re: 6.506 vs 280 AI using 140 gr bullets

I realize this is not for 140's but I am working up with the 120 TTSX using N560. Looks like about 56.0 gr yields a scalding 3270fps and at least MOA accuracy from a hunting configuration 26" barreled 6.5-06 rifle. Another round of tuning with seating depth is next, but looks promising.
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  #73  
Old 09-03-2013, 08:29 PM
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Join Date: Sep 2013
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Re: 6.506 vs 280 AI using 140 gr bullets

I have had both 6.5-06 AI and still have a .280 AI. I personally love both cartridges and am planning on building another 6.5-06 AI. With that being said I think for a 140 grain bullet the .280 AI is the better choice. better selection of bullets in .284 in 140 grain options. Also you can buy headstamped .280 AI brass. dies are cheaper, more available, and the 6.5 is more suited towards a 130 grain bullet. The bullet selection is not great in 140 grain for 6.5mm bullets and you will have to spend time fire forming your brass. I own a .264 wm and feel that it is a much more suitable cartridge to shoot 140 grain bullets in .264 diameter. Im not a fan of the vanilla .270 which is a great cartridge, only for the fact everyone has one. That is why I am planning another 6.5-06 AI set up to shoot 130 grainers. it will be a dedicated Antelope rig. point in all my rambling is I would choose the .280 AI or .264 for 140 grain bullets, leaning more so to the .280 AI. just my thoughts
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  #74  
Old 09-04-2013, 10:22 AM
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Re: 6.506 vs 280 AI using 140 gr bullets

Quote:
Originally Posted by ND280AI View Post
I have had both 6.5-06 AI and still have a .280 AI. I personally love both cartridges and am planning on building another 6.5-06 AI. With that being said I think for a 140 grain bullet the .280 AI is the better choice. better selection of bullets in .284 in 140 grain options. Also you can buy headstamped .280 AI brass. dies are cheaper, more available, and the 6.5 is more suited towards a 130 grain bullet. The bullet selection is not great in 140 grain for 6.5mm bullets and you will have to spend time fire forming your brass. I own a .264 wm and feel that it is a much more suitable cartridge to shoot 140 grain bullets in .264 diameter. Im not a fan of the vanilla .270 which is a great cartridge, only for the fact everyone has one. That is why I am planning another 6.5-06 AI set up to shoot 130 grainers. it will be a dedicated Antelope rig. point in all my rambling is I would choose the .280 AI or .264 for 140 grain bullets, leaning more so to the .280 AI. just my thoughts
Not sure I agree with the 6.5 not being as suitable for the 140's? It all depends on the twist. I have 8 twists in both my 6.5 Sherman and my 6.5 SS and they shoot the 160 Matrix with some authority. Both will exceed 3000' with 26" barrels and with a b.c. near .700, it is pretty hard to beat!.......Rich
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  #75  
Old 11-06-2013, 03:13 PM
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Re: 6.506 vs 280 AI using 140 gr bullets

I am with Rich on this one. I have only shot 140 and 160 grain pills in the 6.5 and no reason to shoot 130 based on their performance. I would love to fling a 160 at the Sherman speeds but my 6.-5-284 in 24" barrel is only around 2700-2750 but they still shoot LR really well with such a high BC.
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  #76  
Old 11-06-2013, 04:34 PM
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Re: 6.506 vs 280 AI using 140 gr bullets

He also indicated the .264 WM is suitable but the 6.5 A.I. (or Sherman) is not? Truth is, the 6.5 Sherman will outperform FACTORY ballistics of the WM and if both had 24" barrels, the Sherman would be very close to equal with handloads with 7-8 grains less powder.There is starting to be more Shermans being built and when word gets around, I think you will see a lot more yet. It is pretty much a no brainer for the people who don't mind fire forming given the brass availability, performance, barrel life, accuracy, etc. of this round. Someone show me how many cartridges are around that (in an '06 sized case) will shoot a near .7 B.C. bullet with an off the chart SD at 3050'/sec. Also, a 140 .264 will easily outperform a 140 .284 in like cartridges with the ONLY edge to the .284 being muzzle velocity which quicky runs out!......Rich
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  #77  
Old 11-10-2013, 02:20 AM
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Re: 6.506 vs 280 AI using 140 gr bullets

140s, 6.5 is going to be the winner. I have not shot a 140 in a .280AI in a really long time now. A fairer comparison would be 6.5/06 with a 140 vs a 280AI with 162s. 140 6.5s have comparable BCs to the 7mm 160 class bullets. The 6.5/06 has about a 80 fps velocity advantage with 140s over 7mms with 162s with both loaded to 65K PSI. IMO too close to call, both work great.
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