The "G" word is used tongue in cheek. Hey, they time me with an hour glass with extra sand, BUT, I like my big irons, but there is no earthly NEED to boom that hard to clang a plate a few yards away (though when in the mood, I shoot full house 777/250 long colt loads just because I can). As an RO, I sure appreciate NOT listening to em all day too.
There's probably 30,000 .45 colt owners in our sport, many of whom also end up owning and shooting .38s out of frustration in taming the colt and not having it get erratic, or not wanting to use fillers etc.
Dick, yer bullet looks interesting. a pard was telling me about a real light .45 his bullet suppllier is gonna deliver to him today or tomorrow, and he says he ain't seen em yet, but was gonna send some along. Might be real similar. I can assure you I could load that 147 grainer to a mass X vellocity of around the same as many .38 loads, and keep em accurate. It's about the lower case capacity keeping pressures up so ya get a good burn and obduration.