Lead--
I also have a couple Lyman #454190 moulds on hand, but haven't tried them in the 45 ACP self-loaders. Just an abundance of caution on my part, and not sure I "buy" The Experts' bit about how bullets heavier than 230 grains tend to batter pistols excessively. Given that my 45s in-house have aluminum or plastic receivers--or are designed around match shooting--and the 45 ACP with decent ammo will positively put a goblin on his natural aspirations with decent hits--the 230 grain bullets operating in the 850-900 FPS ballpark suffice for my social projects that I pray fervently will never transpire.
I have long used the Lyman #452374 as my practice ammo's bullet of choice for my carry guns. I tried out the BD mould owing to its bluff profile and its potential as a varmint whacker for hunting use, and it does the job very well. So does the Lee 230 grain TC. I can't say that any of these 3 shoot any better in my 3 pistols than do any of their counterparts; the Lee 200 grain H&G #68 knock-off is the Gold Cup's best bullet to a significant degree. The GI Ball "374" does a decent job of anchoring varmints when it connects, too--so I'm not sure just how that big ol' meplat improves varminting potential for jackrabbits and rats. Now, 2-legged varmints......they might be an upgrade there.
Lead--
Your counter-bear reference reminded me of a shooting incident involving an officer from an allied agency in the mid-1980s. This man just passed on a few months ago. His shop carried 1911A1-pattern pistols in 45 ACP, a thing I envied at the time, being limited to the 38 Special back in those days. One graveyard shift, I heard their radio on my patrol car's scanner broadcast a "Prowler in progress" call in one of the better neighborhoods in the city. One officer arrives on scene and advises "THE SUSPECT IS RUNNING EAST THROUGH BACK YARDS!" The officer I spoke of initially drove to the end of the block well east of the fleeing subject to box him in, and said same over the air. A few seconds pass, and the first officer puts out "SHOTS FIRED! SHOTS FIRED, AREA OF (blank) AND (blank) STREETS!
I was about 3 minutes away, and started in that direction to assist. Shortly thereafter, that end-of-block officer was on the air, stating all was well, shots had been fired but at a BEAR, and for responding folks to chill out. I later learned that the officer looked over the fence to see a black bear coming right at him across the back yard, so he just started putting out rounds. He put 7 rounds out, and every one found its mark. The bear piled up about 8 feet from the guy, just across the fence. Darn good shooting, at 2:45 A.M. in subdued lighting on a fast-moving set of claws and teeth. A long-winded way of saying that 45 ACP even with old school Silvertips can be effective bear medicine.
I looked hard at that mold for use in the .45 auto but was put off by the weight. I was looking for something around 210 gr. I believe the HP version comes in at 210 or a little more but I didn't want to mess with a hp. I hope someone tries it in the big Colt cause it sure looks to be a good one. What diameter does it drop at in front of the crimp groove? Would be nice to have some full diameter up front.