I don't see where Kustom King has 275 gr,screw in field points.
I should have mentioned,after gluing your steel adapter into your field point,chuck the field point into a drill or drill press and running the drill,hit the back edge of the point/adapter with a broadhead file to slightly bevel that rear edge.They will pull out of any target just fine.If a 275 gr point is truly what you need,there is no need for using lead,only if you need to make a custom weight inbetween.All you need is a steel adapter and a glue on field point.It is really very simple.