[Blackhawk44]

Sorry. Do not have a casting thermometer and the scale on the rheostat means nothing. Have never had a problem with pin release and have never used 'releases', even on molds. Just something that I haven't run into with my 38 molds in the last 35 years...

 

[Blackhawk44]

Never had a problem with release, but a casting speed that will keep the pin warm can be taxing. I know of no other cure.

 

[Blackhawk44]

I would play with other mold designs before tackling 457122. I takes a little experience to become adept keeping the hollowpoint pin warm enough for consistant results. Second, reducing that one from the as-cast diameter of .459-.460 to .452-.454 can be stressful on something like the Lyman 450 sizer. Better would be the Lee push-thru sizer. Be sure to lube the grooves PRIOR to sizing. That will give the needed resistance to the sizer wiping off the lube grooves. Almost any good 300gr designed specifically for the Colt should be preferred.