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< 16ga. Ammunition & Reloading ~ roll vs. fold crimp |
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Posted:
Fri Oct 15, 2021 6:29 pm
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Joined: 21 May 2015
Posts: 128
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I got a roll crimper for experimentation and find that it's not as complicated as I had thought.
I'm on the low pressure group, but I thought I'd try you all first. Several of the LPG recipes that appeal to me are fold (not roll crimp), and I'd really like to roll them.
So, in general do roll crimps trend to higher or lower pressures... FWIW I'll have these tested before proceeding. But, I would like to have some confidence in success before making the samples.
3ds |
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Posted:
Fri Oct 15, 2021 6:37 pm
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Joined: 21 Mar 2019
Posts: 523
Location: Texas
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Posted:
Sat Oct 16, 2021 4:32 pm
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Joined: 09 Feb 2015
Posts: 824
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Their would not be enough differenc either way. Loadem & shootem. |
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Posted:
Sat Oct 16, 2021 5:29 pm
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Joined: 17 Oct 2019
Posts: 456
Location: New Jersey
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I was always told roll crimps create less pressure. |
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Posted:
Sun Oct 17, 2021 5:36 am
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Joined: 04 Mar 2019
Posts: 1844
Location: Central ND
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All things being equal, a fold crimp will produce more chamber pressure than a roll crimp, generally in the area of 500 PSI. |
_________________ Mark...You are entitled to your own opinion. You aren't entitled to your own facts. |
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Posted:
Sun Oct 17, 2021 12:25 pm
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Joined: 14 Oct 2011
Posts: 61
Location: England
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As a general rule of thumb I always add an extra grain to a roll turn over as opposed to a crimp. We have used rto for many years in the UK
Regards
Graham |
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Posted:
Mon Nov 08, 2021 5:09 pm
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Joined: 26 May 2008
Posts: 147
Location: High Desert of SoCal
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roll crimps generally produce lower pressures. BTW, I've had excellent results with Longshot. I's loud and it does have a flash in low light, but its pressures are low and its velocities age high. |
_________________ R J Talley
James Madison Fellow |
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