Thread: .44 Mag + Cast Bullets = lots of leading for me
View Single Post
 
Old 11-28-2009, 03:34 PM
fredj338's Avatar
fredj338 fredj338 is offline
Member
 
Join Date: Feb 2006
Location: Kalif. usa
Posts: 6,836
Likes: 2,665
Liked 3,927 Times in 2,366 Posts
Default
The chamber throats are too small. They are swaging the bullet down to 0.429" then the bullet bumps up after some severe gas cutting at the forcing cone. I can assume the leding is in the first 1-2" of bbl? That is undersized. You'll need to lap the chamber throats to at elast the groove dia. or slightly larger, 0.430" woud be the smallest. Slugging your bore is important. but the chambers are where the bullet is getting sized down. Also, if you use the horrible LFCD to crimp, it can further reduce the diameter of the bullet & cause leading.
__________________
NRA Cert. Inst. IDPA CSO
Last edited by fredj338; 11-28-2009 at 03:38 PM.
Reply With Quote