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October 17, 2008, 05:12 AM | #1 |
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Join Date: November 15, 2007
Location: Cayce, SC
Posts: 222
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too much 357 mag crimp? Lee fcd
I'm loading up some hunting loads with 158gr and 180 gr XTPs for .357 mag with Lil' Gun and H-110. Want to use heavy crimp. Followed the instructions, but seems like I have to screw it in more than 3/4 turn for a heavy crimp. Almost 1 1/4 seemed right. Has anyone else noticed this?
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October 17, 2008, 05:34 AM | #2 |
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Join Date: July 18, 2008
Location: New Mexico
Posts: 46
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I am loading 7.0gr of HP-38 behind a Speer 135 gr, Sht bbl, GDHP, using Winchester brass. I found that 7/8-1 turn is about right on this load, which gives me a MV of 1025 fps in a 2.5" bbl S&W Mdl 66. Obviously, a heavier load could require more crimp, but I would think 1.25 turns would be about the maximum I would want to apply.
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October 17, 2008, 08:55 AM | #3 |
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Join Date: February 20, 1999
Location: home on the range; Vermont (Caspian country)
Posts: 14,324
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screw the instructions
1) Go to your local friendly gunshop.
2) ASK if you may open a box of Remington or Winchester 357 Magnum ammo. 3) Inspect THEIR crimp. 4) Go home and do THAT.
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. "all my ammo is mostly retired factory ammo" |
October 18, 2008, 01:04 AM | #4 |
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Join Date: June 16, 2008
Location: Transplanted to Ridgeland,SC
Posts: 606
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Crimp
I have always tried to crimp my 357 and 44 mag loads to have the same amount of crimp as a factory load.And yes it seems that I always have to go more than a turn.I have never had any problems but then again I never load all the way to the max either.I always stay 2-3 tenths of a grain under it.With w296/H110 or Vit N-110 I am still getting better than factory power loads.If you see any problems I would ring up the die maker and see what they have to say.For your own peace of mind you may want to anyway.All but 1 or 2 sets of my dies are Lee carbide dies if you are wondering.
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October 18, 2008, 01:30 AM | #5 |
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Join Date: June 16, 2008
Location: Transplanted to Ridgeland,SC
Posts: 606
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oops
That should have been the Lee Deluxe carbide die set.Its the four die set with the factory crimp die.My bad!!!!!!
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October 18, 2008, 08:06 PM | #6 |
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Join Date: January 26, 2007
Location: South-Western North Carolina
Posts: 1,124
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if the slug has a cannelure then it may appear to be a deeper crimp than necessary on a non-cannelure slug. depends somewhat on the powder as you stated.
at any rate don't 'squeeze the guts' out of the slug. |
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