I would sure try a hollow base mould first

https://www.ebay.com/itm/Lyman-1-Cavity-Shot-shell-Foster-Slug-Bullet-Mold-For-12-Gauge-475-Grain-Slug-Md/381953982172?epid=2254296811&hash=item58ee3b3edc:g:8bAAAOSwS35Zcgyt

For your smokeless load, what pressure are you wanting?

Mike



Edited by skeettx (12/15/17 04:09 PM)
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USAF RET 1971-95