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View Full Version : RCBS .223 small base sizing die problems?



BigHoss74
11-03-2012, 10:21 PM
Has anyone used the rcbs .223 small base sizing die and have it size the cartridge neck diameter down to .244? maybe i got a bad one? I know my manual states that the neck diameter should be .253

Longone
11-04-2012, 06:49 AM
Just curious as to what brass you are using? Neck wall thickness? Have you tried to load any? I have used a RCBS 223 SB die for many years without problems.
Longone

BigHoss74
11-04-2012, 07:27 PM
The brass is a mix of remington,Winchester and lake city mostly, the neck wall size ranges from .0114-.0120 and the neck diameter is .255-.256 before sizing. I have loaded a few rounds but i have to hold the bullet all the way till it enters the die in order for it to stay.

Longone
11-04-2012, 08:17 PM
My loaded rounds measure .247" with LC brass. Given your neck thickness this sounds about right. Which manual are you working with that gives the .253" dia.?

Longone

BigHoss74
11-04-2012, 09:38 PM
Lyman 49th edition