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280 ack imp 40 degrees vs Nosler brass

 
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  #29  
Old 04-18-2013, 07:30 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

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Originally Posted by woods View Post
Yeah it's a bad deal.

The answer is simple: if you have an older 280AI chamber, use 280 Remington caliber brass. If you have a new SAAMI chamber, use 280AI Nosler brass or 280 Remington caliber brass
Woods, I mention in past post about the 280AI that Sierra and Nosler had in their manual prior to the SAAMI spec 280AI and they also gave loading data along with case diagram. Sierra manual # 5 been around lot of years. I also told you case wasn't that far off what Nolser did for the 280AI SAAMI Spec.


.280 Ackley Improved | Gear | Guns & Ammo


If you go to picture click of case you get case that was in both reloading manual.
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  #30  
Old 04-18-2013, 07:51 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

I have Nosler Manual #4 and in that they have the original Ackley case dimensions. In Manual #6 they have case dimensions that differ by 7 thousandths. Also in #4 for the 30-06 AI they state "There is no industry standard maximum overalll cartridge length for this cartridge": however in #6 they quote, "Maximum SAAMI Overall Cartridge Length: 3.340". I go to the SAAMI and I see no mention of the 30-06AI. So is Nosler blowing smoke up our ass so they can pave the way screw up this round too? Interestly, in #4 for 180's their max load in RE22 is 62.0 (2985fps) for a load density of 97% - in Manual #6 for 180's, their max load in RE22 62.0 (2985fps) for a load density of 105%. All yo guys know that if you seat your bullet deep enough back in the case to change the load density this much that the ballistics are going to change. I would not trust the new manual for anything but toilet paper. Just shows how arrogant and irresponsible Nosler has become.
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  #31  
Old 04-18-2013, 08:47 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

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Originally Posted by pmh-usa View Post
I have Nosler Manual #4 and in that they have the original Ackley case dimensions. In Manual #6 they have case dimensions that differ by 7 thousandths. Also in #4 for the 30-06 AI they state "There is no industry standard maximum overalll cartridge length for this cartridge": however in #6 they quote, "Maximum SAAMI Overall Cartridge Length: 3.340". I go to the SAAMI and I see no mention of the 30-06AI. So is Nosler blowing smoke up our ass so they can pave the way screw up this round too? Interestly, in #4 for 180's their max load in RE22 is 62.0 (2985fps) for a load density of 97% - in Manual #6 for 180's, their max load in RE22 62.0 (2985fps) for a load density of 105%. All yo guys know that if you seat your bullet deep enough back in the case to change the load density this much that the ballistics are going to change. I would not trust the new manual for anything but toilet paper. Just shows how arrogant and irresponsible Nosler has become.
If you look at Sierra manual they have same 280AI case and I don't have my Nosler manuals in front of me so can't say what year or manual Nosler was changed to SAAMI spec for the 280AI.

As to the OCL for the 30-06AI they keep the same as for the 30-06 which some like to do instead of special throating.

I guess you haven't read Sierra manual loading data for the 30-06AI as they also have max load of 62gr/R-22 with their 180gr bullets even the long 180gr HPBT MatchKing. I guess you haven't read Speer manual that has max load for the 30-06 with 62gr/R-22 with 180gr bullet as a compressed load also Alliant powder reloading data for the 30-06 has max load for 180gr with 62gr/R-22.

Which manual you using for your 30-06AI?
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  #32  
Old 04-18-2013, 11:45 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

Got a reply from both Dakota Arms and Red Hawk Rifles. Both report using Nosler brass with good success in their 40 degree cut chambers.....
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  #33  
Old 04-18-2013, 11:56 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

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  #34  
Old 04-18-2013, 12:48 PM
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Re: 280 ack imp 40 degrees vs Nosler brass

Exactly - .014"

That was what caused my flattened primers
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  #35  
Old 04-18-2013, 01:09 PM
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Re: 280 ack imp 40 degrees vs Nosler brass

http://www.saami.org/pubresources/cc...20Improved.pdf

Straight from SAAMI's website.

Based on the SAAMI website cartridge drawing, the spec's of the one above are off a bit, but close.

I've used Nosler 280AI brass in a chamber cut for the "so called" older original wildcat 280AI with no issues. This was done in two different chambers.
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