I haven\’t yet purchased any of the 147 grain smiley bullets because Lyman\’s 50th is the only load data I can find for anything close to a 147 grain fmj bullet. Their data is for a .357 magnum load using a 145 grain Winchester Jacketed Silvertip with 8 different powders. I have no idea how the RMR Smiley bullet compares to the Silvertip in composition or length. A guy named Rollis Karvellis posted in the RMR In-House bullets forum with his results using the RMR 147 grain Smiley with a load of Alliant 2400 that was slightly less than Lyman\’s starting load for the 145 grain Silvertip.
As far as the RMR 124 grain Teardrop bullets go, I just purchased 1000 of them and plan to start using .357 magnum data for 125 grain XTP bullets. The length of the RMR teardrops average only .003 shorter than my XTP JHPs, but not knowing how their metallurgy compares, I plan to stick with starting to mid-range XTP loads with the RMR teardrops at first. I have put a cannelure in them with a Buffalo Arms Cannelure tool so I can apply a good roll crimp, and plan on loading them at the maximum (for .357) 1.59 OAL. If I was still loading .38 spl, I would reference the vast amount of .38 load data available for 125 grain XTP bullets.