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Forums10
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Mar 29th, 2024
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Joined: May 2011
Posts: 1,135 Likes: 37
Sidelock
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OP
Sidelock
Joined: May 2011
Posts: 1,135 Likes: 37 |
I while traveling I took my reloader press but forgot my roll crimp. I load 2.5" shells with BP and lubed fibre wads. With no roll crimp I decided to put the over shot card on and then do a start star crimp in my Mec 600. It left the mouth of the shell quite open but the starter crimp securely held the over shot card. It worked just fine except I would not want to juggle the shells around in my pocket lest the over shot card give way and kept them in a container that holds each shell by itself. There was noticeably less recoil and from what I could discern and perhaps a bit more spread in the pattern. Has anyone else tried this? I'd like to hear how they handled the shells and what results they were getting.
Nothing is foolproof to a sufficiently talented fool.
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Joined: May 2016
Posts: 1,413 Likes: 193
Sidelock
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Sidelock
Joined: May 2016
Posts: 1,413 Likes: 193 |
Tamid,
it sounds as if the over shot card acted as a spreader function.
Karl
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Joined: Jan 2004
Posts: 6,703 Likes: 405
Sidelock
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Sidelock
Joined: Jan 2004
Posts: 6,703 Likes: 405 |
Tamid,
it sounds as if the over shot card acted as a spreader function.
Karl And it almost certainly reduced pressure. Probably quite a bit.
_________ BrentD, (Professor - just for Stan) ![[Linked Image from i.imgur.com]](https://i.imgur.com/qclHjMQ.jpg)
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Joined: Mar 2011
Posts: 4,080 Likes: 466
Sidelock
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Sidelock
Joined: Mar 2011
Posts: 4,080 Likes: 466 |
Sounds like a description of the Hartin crimp, but the shortened star is tight against the card and the hull has a roll to the edge of the hull...Properly done it should behave like a roll crimp. However black powder needs more compression than modern smokeless and that may explain loss of pressure. https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=610808&page=1
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Joined: May 2005
Posts: 190 Likes: 11
Sidelock
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Sidelock
Joined: May 2005
Posts: 190 Likes: 11 |
I remember using a few drops of candle wax to seal the ends of shells when I was a kid.
The only constant in life is change.
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Joined: Oct 2004
Posts: 1,826 Likes: 12
Sidelock
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Sidelock
Joined: Oct 2004
Posts: 1,826 Likes: 12 |
Tamid, my Accurate powders reloaders guide goes into detail about the crimp and how it's overlooked. The weight of the shot and the crimp are the only resistance to the powder and gives you a good reliable reload. You need that roll over in a crimp.
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Joined: May 2011
Posts: 1,135 Likes: 37
Sidelock
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OP
Sidelock
Joined: May 2011
Posts: 1,135 Likes: 37 |
Tamid, my Accurate powders reloaders guide goes into detail about the crimp and how it's overlooked. The weight of the shot and the crimp are the only resistance to the powder and gives you a good reliable reload. You need that roll over in a crimp. Paul, I agree. But what do you do in a pinch? I did try full star crimp with a makeshift riser on the crimp stages to account for 2.5 rather than 2.75" It worked for about half the loads and the other half were a mess.
Nothing is foolproof to a sufficiently talented fool.
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Joined: Mar 2002
Posts: 7,709 Likes: 474
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 7,709 Likes: 474 |
I loaded a few Harkin crimp loads with a layer of Tyvek as an overshot cover instead of a card. Crimp was a bit deeper and seemed to hold well. I has a roll of Tyvek from wrapping a home remodeling and cut them out with scissors. Thought about adding a drop of wax but the modified crimps held without it.
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