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Bertram brass sticking in shell holder?

 
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  #8  
Old 10-02-2013, 04:43 PM
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Re: Bertram brass sticking in shell holder?

#3-- The case necks were between .0015 and .0025 thicker from one side to the other which is similar to the average RUM brass. The finished neck thickness was about .001 thicker than RUM brass.

So your saying that the neck thickness variation was pretty extreme? Seeing similar things with my custom made Raptor brass but the Bertram 408 CT brass I use is about the most consistant brass I have ever used as far as neck thickness variation, even better then 338 Lapua brass by a fair margin.
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

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  #9  
Old 10-03-2013, 01:08 PM
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Re: Bertram brass sticking in shell holder?

Kirby, the neck thickness variation was not good but was no worse than Rem. Win. or Fed. It was obviously much worse than the average Lapua or Norma necks, but I have had batches of 6.5 - 284 Lapua cases that were every bit as bad as the Bertram cases.

One thing I failed to mention was the head space or base to datum line dimension . A 338 Edge go gauge measures 2.467 (with my Stoney point comparator) and the Bertram Brass varied from 2.467 to 2.458 with most falling into the 2.463-2.464 range. ( about 60%). There were allot of the short ones (30%) that are going to be stretched, during firing, more than you would like to see. Nine Thou. is a quite a bit of case volume variation to deal with for initial load development, so I would sort out the short ones and use them for the break-in rounds. ---- RHB
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  #10  
Old 10-03-2013, 04:21 PM
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Re: Bertram brass sticking in shell holder?

Quote:
Originally Posted by 7mmRHB View Post
Kirby, the neck thickness variation was not good but was no worse than Rem. Win. or Fed. It was obviously much worse than the average Lapua or Norma necks, but I have had batches of 6.5 - 284 Lapua cases that were every bit as bad as the Bertram cases.

One thing I failed to mention was the head space or base to datum line dimension . A 338 Edge go gauge measures 2.467 (with my Stoney point comparator) and the Bertram Brass varied from 2.467 to 2.458 with most falling into the 2.463-2.464 range. ( about 60%). There were allot of the short ones (30%) that are going to be stretched, during firing, more than you would like to see. Nine Thou. is a quite a bit of case volume variation to deal with for initial load development, so I would sort out the short ones and use them for the break-in rounds. ---- RHB
Thanks for the info. I thought you were getting out of the business, change your mind?
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #11  
Old 10-03-2013, 05:31 PM
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Re: Bertram brass sticking in shell holder?

Kirby, I'm still plugging along but limiting myself as to how much I do based on how I'm feeling at the time. Thanks for asking! ---- Roland
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  #12  
Old 10-03-2013, 05:51 PM
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Re: Bertram brass sticking in shell holder?

Quote:
Originally Posted by 7mmRHB View Post
Kirby, I'm still plugging along but limiting myself as to how much I do based on how I'm feeling at the time. Thanks for asking! ---- Roland
Hope all is well with you and yours old friend!
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #13  
Old 10-03-2013, 06:23 PM
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Re: Bertram brass sticking in shell holder?

Thanks Kirby, I hope you and your family are well also!! Hope you have some good hunts coming up so we can hear the stories.

Ten years ago, when there were only a few thousand members, there were lots of good hunts written up. Now with 70,000 + members there are only a few written up which makes you wonder how many of these 70,000 members actually hunt???

Anyway It's good to talk to you.--- Roland
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  #14  
Old 10-03-2013, 07:25 PM
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Re: Bertram brass sticking in shell holder?

Ten years ago, when there were only a few thousand members, there were lots of good hunts written up. Now with 70,000 + members there are only a few written up which makes you wonder how many of these 70,000 members actually hunt???

Anyway It's good to talk to you.--- Roland[/QUOTE]

I hear you and agree.
__________________
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
Reply With Quote
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