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Re: Effect on pressure when the crimp doesn't open? Jawjadawg #433535 01/21/16 11:02 AM
Joined: Oct 2011 Posts: 207 Likes: 2 WI Eric 375 Sidelock
Eric 375 Sidelock Joined: Oct 2011 Posts: 207 Likes: 2 WI	Appears I was mistaken as to the type of crimp. Sounded like they were roll crimped but as per the photo they used a pie crimp. Why then use a roll crimp and heat to set it. Just belt and suspenders make the hull difficult to open and results in blown material at the hull mouth. Seems to me not a well thought out loading process. One or the other but not both!

Re: Effect on pressure when the crimp doesn't open? Jawjadawg #433536 01/21/16 11:15 AM
Joined: Jan 2006 Posts: 15,456 Likes: 86 The Great State of Tennessee HomelessjOe Sidelock
HomelessjOe Sidelock Joined: Jan 2006 Posts: 15,456 Likes: 86 The Great State of Tennessee	Originally Posted By: Jawjadawg I took my pictures to our local blackpowder shop here in town. He didn't look at it very long before asking about my chamber length, saying it looks like the hulls didn't have room to open. I believe a 1898 Parker GH should measure 2-5/8" chambers with Parker recommendations to use 2-3/4" shells so that does seem a plausible explanation. I'll get the chambers measured to know their length for sure. Please comment if anyone sees anything amiss with the way those remaining shells look to you, or if my local guy's theory holds water. I don't think I'd blame it on the gun.......a short chamber wouldn't do that to a hull.

Re: Effect on pressure when the crimp doesn't open? Jawjadawg #433670 01/22/16 01:21 PM
Joined: Jan 2014 Posts: 271 Jawjadawg OP Sidelock
OP Jawjadawg Sidelock Joined: Jan 2014 Posts: 271	Do I have enough information in this thread for anyone to say they would or would not continue shooting these loads?

Re: Effect on pressure when the crimp doesn't open? Jawjadawg #433671 01/22/16 01:42 PM
Joined: Feb 2009 Posts: 7,464 Likes: 212 craigd Sidelock
craigd Sidelock Joined: Feb 2009 Posts: 7,464 Likes: 212	I think you did a lot more homework than many would do. If I wanted an 8000psi load and discussed it with the manufacturer, I'd use them. I believe the manufacturers comment about the friction heat to set the crimp meant that the hull was weakened, not that the pressure was increased. Still, if that voice inside you says not to, then maybe use them up in a modern gun.

Re: Effect on pressure when the crimp doesn't open? Jawjadawg #433674 01/22/16 02:00 PM
Joined: Dec 2014 Posts: 906 Likes: 30 Texas ithaca1 Sidelock
ithaca1 Sidelock Joined: Dec 2014 Posts: 906 Likes: 30 Texas	Will the MFG'er pressure test a couple of them, for your piece of mind? If you have a large qty. and the MFG;er won't, it may be worth it to you to send a couple to Tom A for private testing. Just a thought. Bill Johnson

Re: Effect on pressure when the crimp doesn't open? craigd #433682 01/22/16 03:03 PM
Joined: Jan 2014 Posts: 271 Jawjadawg OP Sidelock
OP Jawjadawg Sidelock Joined: Jan 2014 Posts: 271	I sent the MFG'er a picture. I didn't notice his response until just a few minutes ago even though he had responded two days ago. I get too much spam email. He stated that they were over crimped and has offered to exchange. I'm just going to send them back so I don't have to worry.

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