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Joined: Apr 2005
Posts: 1,141 Likes: 102
Sidelock
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OP
Sidelock
Joined: Apr 2005
Posts: 1,141 Likes: 102 |
Am I correct that a shell having a Hartin crimp is simply a 23/4” hull with 1/4” trimmed off and a thin card wad used on top of the shot column to close the reduced crimp? No change in loading components? Thanks
Last edited by eeb; 01/24/22 11:38 AM.
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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 |
The Hardin crimp was to alleviate the problem of a hole in the center of the crimp, no matter what the cause. Yes it was a OS card to cover the hole. I never tried to trim a 1/4" off a shell then use my normal date to see what happens. When I trim a 1/4" I'm roll crimping. Why would you trim a 1/4" and fold crimp ? If it's for 2 1/2" shells with a fold crimp, then adjust your load stack height with a different plastic wad of fiber cards. Maybe your idea will work. Good luck and let us know.
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Joined: Jan 2002
Posts: 524 Likes: 62
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 524 Likes: 62 |
I was trying to make 2 1/2" shells for use in a beautiful WJ Jeffery, I never should have sold. Another story. Using a mec grabber reloading press without modifying the press presented a problem. What I came up with was cutting the hulls using a dremel bit in a drill press was the best method I found. Then I experimented and found the best solution was a 16 ga overshot card. This filled in the gap from the missing 1/4" of hull. This allowed me to load a 7/8 oz or 1 oz (depending on the wad) load without adjusting the reloader and get a nice crimp . Greg Moats called me and asked if he could write it up for Shooting Sportsman.
This ain't a dress rehearsal , Don't Let the Old Man IN
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Joined: Apr 2005
Posts: 1,141 Likes: 102
Sidelock
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OP
Sidelock
Joined: Apr 2005
Posts: 1,141 Likes: 102 |
Thanks for the responses. Nitrahs answer seems to confirm my premise. I’ll see if it works on my PW
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Joined: Feb 2002
Posts: 211
Sidelock
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Sidelock
Joined: Feb 2002
Posts: 211 |
My press is a MEC 600 jr,and my short chambered guns are in 12, 16 and 20 gauges. For those I load 2-1/2" shells. All of my shells are cut down from fired 2-3/4" factory ammo. At first I tried using a 1/4" spacer under the crimp stations. They looked pretty good and there was no hole in the crimp; but given a short period of time and most of the crimps started to open up because the new crimp shoulder had moved down below where the original crimp memory had been. This caused some shells to be bloopers and others to allow the shot charges to be loose in the shell box, quite frustrating. Then I learned of the "Hartin crimp". It was both simple and brilliant. I haven't had any problems using this method to load short shells.
Jack Kuzepski
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Joined: Jan 2002
Posts: 13,213 Likes: 1192
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,213 Likes: 1192 |
Nitrah's method is the easiest way to make short shells that I have ever found. I agree with Jack K. Then I learned of the "Hartin crimp". It was both simple and brilliant.
May God bless America and those who defend her.
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Joined: Mar 2002
Posts: 7,749 Likes: 500
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 7,749 Likes: 500 |
I turned a adjustable brass shell trimmer on my metal lathe. It hold one of those snap off exacto knife blades. When chucked in a small drill it will trim hulls to 2 1/2 " perfectly. Couple seconds each and everyone exactly the right length. They do not need skiving I found out to crimp nicely. I use a Tyvek UltraThin Overshot shotcard (Ballistics Products) and adjust my crimp to fold a nice crimp. Most loads are nearly closed in the center but some loads would leave about a hole just large enough for most of the shot to run out into your pocket or shell bag. With this setup I can load 300-350 shells an hour on my Spolar. The thin Tyvek layer works perfectly and does not add too much thickness to get good crimps.
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Joined: Mar 2011
Posts: 4,095 Likes: 487
Sidelock
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Sidelock
Joined: Mar 2011
Posts: 4,095 Likes: 487 |
In trimming hulls for my 2" 12 gauges, I prefer using a Harbor Freight 2" chop saw and a plastic jig an Ebay seller made. The jig is clamped in the saw's vise. The jig has a groove in which sits the shell's head's rim. The drop of the saw precisely cuts the hull which is rotated by turning the head a few degrees as the blade drops partially through the hull. The hull is precisely trimmed in a few seconds. The Ebayer offered 2.5" jigs, too. Gil
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2 members like this:
67galaxie, MattH |
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Joined: Feb 2002
Posts: 211
Sidelock
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Sidelock
Joined: Feb 2002
Posts: 211 |
Joe, Thanks for the link to BPI, it looks like a nice upgrade to the plastic crimp starter. Been quite a while since I ordered anything from them, looks like I'll be back i touch with them.
Jack K
Last edited by Jack K; 01/25/22 11:21 PM.
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