I'm looking for a mold to cast a 100 - 120 grain bullet that will feed in the 300 Blackout. I have some 110 grain j-words that will not seem to allow the bolt to close no matter how deep I seat them. It seems as though the round nose hits the rifling in the leade too soon and keeps the bolt from going all the way into battery. Any one have a recommendation in this weight range for a pointedty spire point for one they have used?