I have no experience with bullet design. I want a 200 grain mold for hard cast 10mm bullets. I am a fan of the Keith designs. I do have experience casting bullets. Up to now I have cast .401 175 gr SWC TL from Lee two and six cavity molds, .358 158 grain FP from a Lee six cavity, and .429 240 gr SWC GC from a Lee two cavity. My alloy is similar to WW with magnum shot. BHN air cooled is 10.5, water dropped is 28, 30 bullet average with a Lee tester.
At this point I am thinking of ordering a 3 cavity mold from Mountain Molds. I have used the online design tool he has and created a keith style with the following specs:
200 gr (WW) Sensible Keith
.401 Cast Diameter (All bands)
No Crimp Groove
.370 Nose Length with a 70% meplat
1.0 Groove to Band length ratio
Any thoughts or recommendations on overall design?
Should I have 1 body band (single large lube groove) or 2 body bands (2 smaller lube grooves)? (I will be trying both pan lubing and LLA. I hope to shoot as cast without sizing.)
Any thoughts about Mountain Molds? The guys over at cast boolits speak highly of him.
Thanks in advance!