vaalpens
Member
- Joined
- Aug 14, 2014
- Messages
- 2,618
I have been using my 40S&W die to re-size the body of my 357sig brass, and then use the 357sig die without lube to basically resize the neck. This has been working great for me when doing it on a small scale while learning to reload 357sig.
Today I decided to start going through my 357sig brass and put all of them through my re-sizing process. I started with once fired Fiocchi brass (GFL headstamp) and everything went smoothly. I then started on my backlog of Starline brass, but found a few of them had a bit more resistance when using the 357sig re-sizing die. On further inspection I found a few of the re-sized brass were out of spec where the case head meets the body. It seemed that a lip was created when brass from the body was forced down. The diameter over the lip was measured at .4360", which obviously is out of spec. (see attached picture)
I measured the Starline and GFL brass and it seems the Starline is at the max SAAMI spec of .424" which obviously makes a very tight fit for the re-sizing die.
It seems this problem with some of the brass is due to one of three things: 1)Brass issue 2)Die issue 3)Lube issue.
It is probably a lube issue, but I thought that if I would see any issue because I don't lube before re-size, that I would see a neck issue. I did not expect a body re-sizing issue since it has already been re-sized by the 40S&W die.
I would appreciate it if any body has any suggestion regarding the re-sizing issue I see.
The brass on the right has the lip and the brass on the left is a max SAAMI spec (.4240 (+.004))
Today I decided to start going through my 357sig brass and put all of them through my re-sizing process. I started with once fired Fiocchi brass (GFL headstamp) and everything went smoothly. I then started on my backlog of Starline brass, but found a few of them had a bit more resistance when using the 357sig re-sizing die. On further inspection I found a few of the re-sized brass were out of spec where the case head meets the body. It seemed that a lip was created when brass from the body was forced down. The diameter over the lip was measured at .4360", which obviously is out of spec. (see attached picture)
I measured the Starline and GFL brass and it seems the Starline is at the max SAAMI spec of .424" which obviously makes a very tight fit for the re-sizing die.
It seems this problem with some of the brass is due to one of three things: 1)Brass issue 2)Die issue 3)Lube issue.
It is probably a lube issue, but I thought that if I would see any issue because I don't lube before re-size, that I would see a neck issue. I did not expect a body re-sizing issue since it has already been re-sized by the 40S&W die.
I would appreciate it if any body has any suggestion regarding the re-sizing issue I see.
The brass on the right has the lip and the brass on the left is a max SAAMI spec (.4240 (+.004))