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Judge my crimp please

This is a discussion on Judge my crimp please within the Reloading forums, part of the Firearm Forum category; I am entering the world of lead with excitement and trepidation. I spent some time getting the right bullet depth because I read that the ...


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Old June 20th, 2019, 10:58 AM   #1
 
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Judge my crimp please

I am entering the world of lead with excitement and trepidation. I spent some time getting the right bullet depth because I read that the case mouth should try and be right at the top end of the groove designed for the crimp. I set up my bell perfectly and I looked at gobs of pix of factory crimped lead loads and it kinda maybe looks right but ....

I dont know .. looks like to much?? No?

I am using a Lee FCD ... should I back off some?
Attached Images
File Type: jpg Crimp1.JPG (923.3 KB, 233 views)
File Type: jpg Crimp3.JPG (887.3 KB, 203 views)
File Type: jpg crimp4.JPG (1.14 MB, 200 views)
File Type: jpg crimp5.JPG (967.8 KB, 216 views)
File Type: jpg Crimp2.JPG (1.00 MB, 182 views)



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Old June 20th, 2019, 11:13 AM   #2
 
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It looks like you're crimping more than the case mouth. It seems there's too much case being crimped. I think you should back the die off some. You just want the mouth curving into the crimp groove. If you can see the ring at the top of the case it's too much.
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Old June 20th, 2019, 11:22 AM   #3
 
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It looks a little too much for me too,back off a touch.
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Old June 20th, 2019, 11:24 AM   #4
 
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Looks like you are crimping a little hard. What dies are you using and are you crimping and seating in the same step? Almost looks like you are trying to get a taper crimp, which most combination seating and crimping dies are, to look like a roll crimp. I also cant tell if its the reflection, but are you getting a slight bulge in the case at the bottom of the bullet?
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Old June 20th, 2019, 11:52 AM   #5
 
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The amount of crimp is dependent upon just how light/heavy the load is. Light 38 Sp call for a light crimp, even a taper crimp. My 38/44 Special +P loads get a light to medium roll crimp. Mid to upper end honest magnum rounds get a heavy roll crimp.

Your photos show what I would regard as a heavy roll crimp. Trust you have a nice, hot magnum load.

The bullet's drive band and a spot just off the meplat have a flat spot (2 on the band?)...from hitting the floor, I hope, and not from a die.
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Old June 20th, 2019, 12:47 PM   #6
 
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I dont have any charge in there at all. I plan on using 4.2-4.5 of hp38 but I am also going to try some with 7 gr of longshot for a proper 38+p. I am using the Lee factory crimp die and will back it up some. Thank you guys .. I felt it was a bit much but didnt want to load a bunch until I was sure.

The bullet was loaded twice and I used the hammer style bullet puller to pull it out so any damage to the bullet was probably the result of rough handling.

Thank you again everyone for your input!!
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Old June 20th, 2019, 01:07 PM   #7
 
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What Ravel & All said😉
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Old June 20th, 2019, 01:27 PM   #8
 
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I crimp my .357 loads that much, but I crimp my .38 std. pressure far less.
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Old June 20th, 2019, 01:48 PM   #9
 
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Here is try number 2. Its about half the bend as the first one. In the pic with the two uncharged rounds the old one is the one on the left and the new try is on the right.
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File Type: jpg crimpv2 1.JPG (1.23 MB, 151 views)
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Old June 20th, 2019, 01:57 PM   #10
 
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Looking good now!
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Old June 20th, 2019, 02:03 PM   #11
 
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I have to say .. it is all a bit of fun!!
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Old June 20th, 2019, 03:18 PM   #12
 
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Slightly OT but are those polymer coated rounds? I really like the ones I have been shooting.
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Old June 20th, 2019, 04:54 PM   #13
 
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Quote:
Originally Posted by Old School Wheelgunner View Post
Slightly OT but are those polymer coated rounds? I really like the ones I have been shooting.
Here is what I came to after a couple of months of questions and research.

Ultimately ... a local buddy says he uses them and loves them and that coated was the way to go over lubed. They are reported to be about 16bnh so that fits in with what I plan on mostly doing with them. I want to make warmer 38's and lighter 357 for paper punching.

I was using 125 gr Zero SJHP for most of my 38 and 357 loads and they are nice bullets at a nice price but wanted to shoot some heavier bullets and these were priced right. I think I paid $60 for their 750ct quick ship and it arrived in a week

https://dgbullets.com/product/38-357-158-gr-swc-bb/

My first tray is done and I loaded em up with 4.2 grains of HP 38. Going to give them a whirl tomorrow.

My wife seems to prefer the standard pressure 158 gr loads to the 125's I was loading and I have some factory ammo set aside should she want to use something in the ruger when I am not home but I will roll up some softer loads with these bullets for her to practice with.
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Old June 27th, 2019, 07:14 PM   #14
 
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I found a good way for me to judge if I have to much crimp, is to pull one of the bullets and see if the crimp left a mark (ring) on the bullet. If it did, to much crimp. Back off and repeat.

I prefer a light crimp on my 9mm coated bullets. Not sure why, other than have had no issues.

Another option is buy a box of factory and set next to yours. Eye the differences in the crimps.
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Old October 2nd, 2019, 02:38 PM   #15
 
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IIRC, when I started reloading, a Lyman Handbook showed three crimps, light, medium, and heavy. A couple of years ago, I had a conversation with an RCBS tech, who said that factory bullets are all overcrimped.

Your first crimps looked to be about the Lyman heavy crimp. As was mentioned, one thing to avoid is the ring around the mouth of the cartridge case, which indicates: 1. that your case length is too long, or; 2. you have adjusted your crimp die too much, and the end of the case is slipping under the crimp ring and can cause a case bulge and difficult chambering.
Don't ask how I know this!

I try to crimp all of my reloads In the bullet's crimping groove, or so there is no lubricant showing, which will just attract dirt, but at the same time, so there is no "lip" formed by the case mouth not being smoothly transitioned into the bullet diameter, which can cause hang-ups when speedloading.
Your new rounds look like they fulfill all the necessary requirements.
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