The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old August 13, 2012, 12:39 PM   #1
Method
Member
 
Join Date: July 6, 2012
Location: Omaha, NE
Posts: 73
Shotshell Reload Question (Crimping)

This past weekend was my inagural foray into reloading. I recently purchased a MEC Sizemaster (12ga), and after getting all other necessary supplies I decided to start reloading from a couple 5 gallon containers full of once-fired AA hulls.

Overall, I have to admit that I've been really happy with the result. I fired 150 rounds on Sunday and had zero failure to fires. There are however, two things I noticed and want to ask some experts about.

1. My crimps seem really good, but there is consistenly a small gap in the very center of the shell. I can see a BB or two, but everything seems secure and nothing falls out. I've seen something similar on a couple of new hulls, but only as an exception to the rule. Should I be worried about this?

2. When placing reloads into my gun for practice Sunday, many slipped right in like a new hull...but a few needed to be pushed in. When I say push, I'm talking about the lightest possible force. I don't have to cram shells in, and the extractors tossed the fired hulls out just like new ones. Again...is this normal for people or do I need to adjust something?

Just in case it makes a difference, here's the recipe I used:

Alliant Clay Dot Powder (17.4gr via MEC bushing #32)
Winchester AA Hulls
Winchester 209 Primer
Claybuster Wad (designed to replace WAA12SL wad)
1oz 8.5 Shot (MEC 302/100 charge bar)

Cheers,
Method

PS: Part of the reason that I'm really happy with the relaoding is cost savings. Based on prices in my local area, I'm saving a dime for every shell I reload.

Last edited by Method; August 13, 2012 at 12:41 PM. Reason: Added "PS" Section
Method is offline  
Old August 13, 2012, 01:03 PM   #2
BigJimP
Senior Member
 
Join Date: February 23, 2005
Posts: 11,386
In the MEC manuals ...it'll show you how to close up that hole in the center...its a combination of crimp depth ..and getting any "swirl" out of the crimp fingers - in the crimp start, crimp finish and final radiusing of the shell in stations 4, 5 and 6....

I know the sizemaster is a single stage press...and I haven't used one for a long time ...but your adjustments are in the same "crimp start", the "finish crimp", and "final sizing" processes on your press.

http://www.mecreloaders.com/document...sizemaster.pdf

page 10 of the Sizemaster's manul ...tells you how to make those adjustments to Crimp Start, the Final Crimp, and the final Sizing or radiusing of the finished shell.

Yes, if I were you, I'd work on the adjustments to remove that hole and make sure the crimp is as close to a factory shell as I could get. Measure the depth on a factory shell ...vs your reloads / my hunch is the biggest issue is in the depth.
BigJimP is offline  
Old August 13, 2012, 10:57 PM   #3
Method
Member
 
Join Date: July 6, 2012
Location: Omaha, NE
Posts: 73
Thanks. Checked the manual, made the adjustment, and then cranked out 200 perfectly crimped shells this evening.
Method is offline  
Old August 14, 2012, 10:50 AM   #4
BigJimP
Senior Member
 
Join Date: February 23, 2005
Posts: 11,386
see, I told you it was an easy fix..../ now go shoot them and have some fun....
BigJimP is offline  
Old August 15, 2012, 03:14 AM   #5
FrankenMauser
Senior Member
 
Join Date: August 25, 2008
Location: 1B ID
Posts: 6,839
I was hoping to offer some help here, but it looks like you've got in under control.
__________________
"Such is the strange way that man works -- first he virtually destroys a species and then does everything in his power to restore it."
FrankenMauser is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:16 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06194 seconds with 9 queries