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280 ack imp 40 degrees vs Nosler brass

 
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  #1  
Old 04-13-2013, 08:58 AM
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280 ack imp 40 degrees vs Nosler brass

According to several sites Nosler went with a different head space on their SAAMI approved brass over the "standard" 280 Rem Ack Imp 40 degrees. Has anyone safely fired and reloaded the Nosler brass in their 40 degree chamber?
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Old 04-13-2013, 10:38 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

Yes - we are using strictly Nosler brass in 2 different 280ai's. No problem, in fact we prefer Nosler brass way more than fire forming. The problem with the Nosler SAAMI spec versus the AI dimentions is not in the brass - so make sure you have the correct sizing die that matches your barrel - that is where the rubber meets the road.
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Old 04-13-2013, 11:17 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

Thanks Cowboy,
I sent off a email to Dakota Arms ref my new 97 Hunter and Red Hawk Rifles who is building my son a 280 AI. Both of them advised they chamber for the 40 degrees version which is what my Redding dies are for. So it sounds like I can get away with using the Nosler brass I already have? If so thats good news. Thanks
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Old 04-13-2013, 12:04 PM
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Re: 280 ack imp 40 degrees vs Nosler brass

Yes worked fine in mine but its soft and loosened the primer pockets fairly quick.
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Old 04-13-2013, 01:28 PM
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Re: 280 ack imp 40 degrees vs Nosler brass

I use Nosler brass in my 280AI haven't had any problems yet and been using Fed 215M primers.
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Old 04-13-2013, 06:35 PM
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Re: 280 ack imp 40 degrees vs Nosler brass

I have used it in a half dozen or more 280s with the old chamber and a few with the saami spec chamber. Never had a problem until recently. I bought some new brass recently and it is shorter than the older lots I have had by at least .006.
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Old 04-14-2013, 11:11 AM
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Re: 280 ack imp 40 degrees vs Nosler brass

I have an older 280AI done by Hart and before all the hoopla about the new SAAMI specs came out, I tried the Nosler 280AI brass. It resulted in severely flattened primers



This was with a known medium pressure load. No other harm done although there was probably extra thinning at the pressure ring which can be controlled by minimum shoulder setback when sizing fired cases
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