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Thread: Lets discuss the topic of Roll Crimping lots to here need to get it all in one place.

  1. #141
    Boolit Master Blood Trail's Avatar
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    I have a BPI roll crimping tool and I recently bought one from the Reloaders Network with 4 rollers. That one is far better. Puts a taper on the crimp whereas the BPI crimped donít.


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  2. #142
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    W.R.Buchanan's Avatar
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    My BPI tool puts a taper on the outside of the hull but the end is square. I got the one off Reloaders Network and it is best of both worlds.

    Left one is factory Right is BPI tool.

    Randy
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    "It's not how well you do what you know how to do,,,It's how well you do what you DON'T know how to do!"
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  3. #143
    Boolit Buddy
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    Read this whole thread. Good stuff and info here.
    What I see is people using roll crimps and no wad under on their Lyman 525 sabot slugs.
    I have the mold and the book says "Use fold crimp only"
    Is either OK and do both perform the same?
    Keith

  4. #144
    Boolit Master
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    Quote Originally Posted by Keith View Post
    Read this whole thread. Good stuff and info here.
    What I see is people using roll crimps and no wad under on their Lyman 525 sabot slugs.
    I have the mold and the book says "Use fold crimp only"
    Is either OK and do both perform the same?
    Keith
    I was pretty sure the Lyman shotgun manual has both fold crimp and roll crimp data. It wont cause any danger to roll crimp, roll crimps generally produced slightly lower pressures, but it's not a huge difference.

  5. #145
    Boolit Master Blood Trail's Avatar
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    I used to roll crimp the 525ís. Never got any accuracy worth a damn.


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  6. #146
    Boolit Master
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    Quote Originally Posted by Blood Trail View Post
    I used to roll crimp the 525’s. Never got any accuracy worth a damn.


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    I wonder if it doesn't pinch up on the wad. Maybe an overshot card would help. I prefer a fold crimp on flat slugs like that, they crimp nice.

  7. #147
    Boolit Buddy
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    Thanks. I am a bit leery of putting an overshot wad over a slug in case it got stuck or something.
    I will stick to the fold crimp.
    I have a RB mold coming .678 to go in the Federal 12S3 wads I have. I think I remember Longbow puts a roll crimp over them with no overshot wad. My manual does not cover that. Roll crimps for round ball not folds. Correct or not?
    Last edited by Keith; 02-28-2020 at 06:40 PM.

  8. #148
    Boolit Master Blood Trail's Avatar
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    Quote Originally Posted by Keith View Post
    Thanks. I am a bit leery of putting an overshot wad over a slug in case it got stuck or something.
    I will stick to the fold crimp.
    I have a RB mold coming .678 to go in the Federal 12S3 wads I have. I think I remember Longbow puts a roll crimp over them with no overshot wad. My manual does not cover that. Roll crimps for round ball not folds. Correct or not?
    So far, I havenít had any problems with overshot cards over slugs, although I havenít done it in a while. Iíve tried traditions cardboard OS cards as well as the frangible plastic ones.

    As far as crimping RBís, you should be able to do both.


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  9. #149
    Boolit Buddy
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    Great. Thanks.

  10. #150
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    On my Round Ball loads I just fold them as they are loaded just like my Standard Trap Loads on the same machine.

    Randy
    "It's not how well you do what you know how to do,,,It's how well you do what you DON'T know how to do!"
    www.buchananprecisionmachine.com

  11. #151
    You have to use an extremely light touch with skiving a shell.
    Like knocking the sharp edge off a brass shell.
    You can squeeze a shell mouth in your fingers and tell if its heavy ,light or average.
    Most are average.
    Range pickups vary.
    Toss to the side, the ones that aren't right.
    That's among the benefits of reloading your own.
    Don't use a shell that is questionable.
    In cold weather, keep a hot plate with a coffee pot nearby.
    Also, use the hot plate to warm your roll crimper, just a little.
    It works, but not if you have a plastic crimper of course.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check