Just started reloading for the 303 Savage this summer.
Picked up a new Lee 303 Savage F/L sizing die, using my M die and seater I use for 30-30 Winchester.
First 50 loaded fine, brand new PPU brass, loaded with a mix of 31141's and jacketed. Shot them, everything appears normal. When I went to F/L size so I could reload them, it appears I'm getting WAY too much neck sizing. Like .301-.302 ID after sizing. A visible reduction of diameter on the neck if I short stroke the press and bring the case back out before contacting the shell holder.
To the point I am opting to anneal after a single loading and resizing, I'm afraid that the necks are going to split after a single load/fire/resize cycle.
Having never loaded 303 before is this normal? It just seems I am dramatically overworking the necks.
As a test I did the same with a 30-30 Wichester, neck diameter ID does not seem to be shrunk anywhere near as much.
What say ye, Lee defective die or is this normal for the 303 Savage?
Anybody ever hone out the neck on a sizer die to not overwork the brass?