Guess you knew something I didnt. I had never used that old Ideal 452460 till our trade. Thought I would run a few extra to try myself. Was kinda surprised when they dropped at .457" but the other old Ideal #452389 dropped the same size. Guess they just made them fatter then.
I had to size them to .452 to seat in an acp case but that didnt seem to hurt anything.
Sized at .452" and lubed the bottom groove only on 7gn 4756 with a cci #300 primer and a heavy crimp in the top grease groove is magic in my old Ruger BH 45 acp.
This is the best this gun has ever shot for me. I put a target out about 20 yards from my P U and rested my forarms over the hood. The first cylender full were all touching so filled it again and all 12 made a ping pong ball size hole. Well thats not a reguler thing for me with a hand gun so try again. Two more cylenders and another ping pong ball hole. Whenever the hole got wider thats where the sight were when it went off. The load shoots better than me.
Since its a single cavity I looked at the Lyman catalog for a four. The pic of the current design for #452460 is different than the Ideal I have. The current one has a radious from the ogive to the leading edg of the first driving band but my Ideal has the SWC nose ending well inside of a very sharp sholder. The older design looks like it would have a scraping action the newer one wouldnt have.
So thanks for having me dig that old bugger out. I prolly never woulda used it otherwise. My old 7.5" BH with the 45 acp cylender is gona make as fine a small game hand gun as anyone could ask for.
Am now looking forward to milder weather and some rabbit huntin.