I got a Lee group buy 358430 last fall, which was dimensioned to drop .360-.361 bullets at 193g in my WW or 197-98g in my 50-50 WW-Pb alloy. The bullet is a very blunt LRN. I've got a rig coming in from "Buckshot" on Cast Boolits that will let me bump a flat on the nose & see whether that eliminates its tendency to veer through water-filled jugs.
I'm loading & shooting them in 8 Mod 32-1 and 33/33-1 S&W's. I've also shot some .35 Remington bullets--the RCBS 35-200 mold--which drop at about .359-60. In 50-50 WW-Pb alloy, these monsters weigh about 215g and zip thru 6 water-filled milk jugs with arrow-straight penetration, then bury themselves completely into a 2x12 stop board.
I'm also about to load up some 150g Lyman Ideal 360271 bullets, which dropped at about .363 or so, and weigh about 155g in the aforementioned alloy. I got a .361 sizer from Buckshot and am fully in business!
Anyone who wants a dynamite 200g LSWC should check out the group buy on Cast Boolits--ordering is still open, and delivery is scheduled for August. Can't wait to load 'em and shoot 'em. I've bought 200g in .358 from Mt. Baldy & they pack a wallop! If my incoming mold casts that "skinny", I'll just "beagle" it with a few little strips of aluminum tape and cast 'em fatter for my .38 S&Ws, while using the original diameter for my .38 SPLs.
Brassfetcher.com is willing to help out with a gelatin test for free, but I will have to see if others are interested in helping me pay for his material expenses. More on that later. In any event, I intend to do a thorough write-up on whatever home tests I perform with these different bullets.
If anyone has easy access to Ken Waters' 1979 Pet Loads tests for .38 S&W, I would certainly appreciate a copy. Likewise, anyone with access to original British army reports on their adoption of & experience with their ".380/200" aka the .38 S&W Super Police.