casting Lyman Bullets using RCBS sizer ????

[Codzilla]

I have been casting fishing weights for years, Bullets are a new hobby !!!
My question is if I use a Lyman mold to cast bullets 175 gr 40 cal. will the
Lyman sizing die fit into my RCBS sizer? RCBS makes a 170 gr sizer. not a 175.
Any help would be appreciated, Thanks,
Jeff

[stubshaft]

It should. and the top punch should also fit. The sizers are NOT weight specific! are you talking about the top punch?

[Codzilla]

Thank you Stubshaft, So the 40 cal sizer will work with any gr bullet you cast 170 gr. or 200 gr it is the top punch I need to look at, is that correct?

[rexherring]

Yup, I use both Lyman and RCBS in my RCBS sizer, Lyman works just fine.

[R.M.]

The RCBS and Lyman sizing dies are interchangeable, but they come in varying diameters, and you need to choose the proper one for your application.

[stubshaft]

The top punch is designed to work with a specific nose profile. I have on occasion used different top punches knowing that the tip of the boolit may be shaped differently by using it. I have also on occasion used a basic top punch and using JB weld or 5 minute epoxy fashioned a custom TP for a specific boolit. IIRC - Buckshot and The Perfesser make kits to do this too.

The sizing die is designed for a specific diameter. There is an adjustment on your sizer to allow the depth of the boolit to be varied, which also affects the amount of lube grooves filled.

[Bret4207]

Codzilla, welcome aboard. Could you explain exactly what it is you are asking about? Moulds come in weights, sizer dies come in diameters. For a 40 cal pistol you'll be looking at a sizer in the .400-.403 diameter range. This link will take you to a sizer die- http://www.midwayusa.com/product/238922/rcbs-lube-a-matic-lube-and-sizer-die-401-diameter

This link will take you to a mould- http://www.midwayusa.com/product/217559/rcbs-2-cavity-bullet-mold-10mm-170-swc-40-s-and-w-10mm-401-diameter-170-grain-semi-wadcutter

Are either of these what you meant?