30 carbine resizing question

[greyling22]

So I've reloaded a couple thousand 30 carbine cases over the years with my lee dies, and they work.

But i was wondering if my sizing die is overworking the brass. look at this picture. From left to right I have a factory round, then 3 fired cases, then 3 resized cases, then one of my loaded rounds. My body taper just looks funny and nothing like a new or fired case.

The factory round measured about .337 in the middle. The fired cases about .349, and the resized ones about .336. so they seem to measure fine, they just look funny?

 

[ReloaderFred]

That's pretty common with the .30 Carbine. Sizing dies and chambers vary a lot, so most manufacturers of sizing dies make their dies to size at SAAMI minimum.

Hope this helps.

Fred

 

[FROGO207]

I use Lee carbide dies as well and mine look just about like yours do. Fred is spot on as mine are sized on the small side.

 

[nambu1]

I use Lee dies for the carbine, but I still lube them.

 

[GRIZ22]

I don't load a lot of 30 carbine. When I do I use an old Herter's steel die. My cases look like yours. Never had a problem.

 

[cfullgraf]

I use Lee dies for the carbine, but I still lube them.

Most, if not all the manufacturers that make carbide 30 carbine dies recommend lubing the cases for resizing. It is due to the taper of the case. Many folks do not lube the case when using carbide 30 Carbine dies.

The factory round measured about .337 in the middle. The fired cases about .349, and the resized ones about .336. so they seem to measure fine, they just look funny?

Mine also look similar. My sizing die is a steel die, it might be an RCBS die but it might be a Redding. It has been a while since I loaded 30 Carbine.

 

[hdwhit]

I'm still resizing 30 carbine brass on a regular basis. I use a steel (not carbide) RCBS die and lube every case before going on from the 30 carbine resizing to turn them into 5.7mm Johnson rounds. When they are sized in my RCBS die, they look very similar to what you have shown in the photograph.

So long as they load up properly and chamber without difficulty, I wouldn't be concerned about their appearance, but I commend you on your care and attention to detail.

 

[hdwhit]

cfullgraf wrote in his signature block:
Real trucks don't have Otto cycles.

Quite agree. They should have Carnot cycles.

 

[daboone]

I have a Rockola and an Inland, both with 1943 receivers and barrels. The fired cases from these war baby's require different amounts of effort to size because of the difference in the chambers.

Lee uses 2 carbide rings in its 30 Carbide sizer that's why it is more expensive that their other calibers sizing dies. I did a side by side comparison with M1 Carbide sizers RCBS, Hornady, my old Herters and the Lee the Lee sizer most closely matched the SAMMI specs.

 

[ArchAngelCD]

Well, nothing left to do here. Go shoot your ammo and have fun.