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necking down

 
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  #1  
Old 02-17-2012, 11:58 PM
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necking down

I am in the process of taking a 375 ruger case down to .264,I was wondering if any body had some advice on how many steps i will need to do this.
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  #2  
Old 02-18-2012, 02:52 AM
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Re: necking down

Try one case and see if it will pull down in one pass. If not anneal just the neck on another case not the shoulder and try it again . If it still does not work well then you will need an additional step die .
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  #3  
Old 02-18-2012, 11:08 AM
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Re: necking down

That's a huge change. I would seek a forming die set for this one.
And unless you're greatly shortening the cartridge, your barrel life will be less than load development!
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Old 02-18-2012, 11:34 AM
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Re: necking down

we have done this one we tried to do them in one step and it dont work. we step down to 338rcm 300rcm 7mm 6.5mm. i used the ruger compact dies to step down to 300 because of cost. we have a 7 lrm so that to 7mm and then the 6.5 ruger. i think you could get away with going from 300rcm to 6.5. as for barrel life i have 800 rounds in a 26in douglas barrel and i didnt shorten the case.
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  #5  
Old 02-18-2012, 06:51 PM
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Re: necking down

Guess I should have said 'accurate barrel life'.
A 6.5-284 holds ~66gr H20 capacity and it's pretty understood that it's good for 1200rnds of accuracy -tops.
A 264WM at 80gr H20 is good for way less.

Your 6.5-375 holds 99gr H20 capacity(33gr over the barrel burning 6.5-284)!!
I don't care if you've 'fired it' 8,000 rounds, the barrel was toast within a few hundred tops.
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  #6  
Old 02-18-2012, 09:45 PM
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Re: necking down

well we bore scope them on a regular basis and my barrel and camber are still fine and i have 1/2 in moa at 300yds and out.
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  #7  
Old 02-19-2012, 10:10 AM
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Re: necking down

Even if all 800 rounds were truly cold bore shots, I'm amazed the first few inches ahead of the chamber remain at all.
So I have a lot to learn.

Would you post your load?
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