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Cartridge design help please

 
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  #36  
Old 11-19-2013, 11:08 PM
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Re: Cartridge design help please

The LRM is .060" shorter and .020" fatter than a 7-300wm with the same performance. It would be the easiest though. I almost built a 6.5-7LRM but I already had a 7-300wm and dies from nearly 20 years ago so I built another 7-300wm and a 6.5-300wm. Now I have 2 of each along with 500 rounds of RWS brass. 50 rounds of RWS brass will out live a 6.5-300wm barrel so I have a lot of barrels worth. I have a few cases with 5 or 6 ejector marks and the primer pockets are still tight.
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  #37  
Old 11-19-2013, 11:21 PM
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Re: Cartridge design help please

A guy has to be careful of RWS brass, tried to use some 6.5x68 or 65 to make a 6.5 Sherman case and it was almost impossible to push a shoulder on and end up with a usable case, a lot of reaming and trimming and fire forming even for what seemed like what should be a simple push and form.
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  #38  
Old 11-21-2013, 12:30 PM
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Re: Cartridge design help please

Quote:
Originally Posted by bigngreen View Post
A guy has to be careful of RWS brass, tried to use some 6.5x68 or 65 to make a 6.5 Sherman case and it was almost impossible to push a shoulder on and end up with a usable case, a lot of reaming and trimming and fire forming even for what seemed like what should be a simple push and form.
Yup! I thought I really had something doing this at first but soon found that the thicker shoulder area was leaving a lot of material on the INSIDE of the neck. It's great brass if you stay on the original neck......Rich
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  #39  
Old 11-21-2013, 08:12 PM
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Re: Cartridge design help please

if pacific makes a die reamer for me could I possibly buy some redding bushing dies and have a smith use the reamer on them to improve the shoulder?
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  #40  
Old 11-21-2013, 10:07 PM
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Re: Cartridge design help please

Not if the dies are hardened. They will eat up a HSS reamer.
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  #41  
Old 11-21-2013, 10:18 PM
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Re: Cartridge design help please

Quote:
Originally Posted by IdahoCTD View Post
Not if the dies are hardened. They will eat up a HSS reamer.
that's what I was afraid of
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  #42  
Old 11-21-2013, 11:06 PM
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Re: Cartridge design help please

Just have Whidden cut you some dies, I think it was $260 ish for the set I got for my 6.5 SS which I did not think was bad for a bushing FL and micrometer top seating die for a wildcat!!
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