Accurate 36-185H is a double-crimp groove design.
You would use the rear crimp groove for loading .38 S&W brass for 1.275" OAL or the front crimp groove for 1.555" OAL in the .38 Special.
The "full-charge" to approximate service velocity (620 fps) is 2.2 grains of Bullseye in the .38 S&W case and 3.3 grains in the .38 Special (standard pressure - not +P) for 700 fps.
Its ½ caliber meplat eliminates soft target impact tumbling, for straight through and through deep penetration and improved crush characteristics which give better terminal effect on small and medium game than a true round nose. The bullet is heavy enough to shoot to the fixed sights on WW2 S&W Victory Models, and its nose shape is speed-loader friendly and also tube-magazine safe for use in the Cowboy rifles.
Those who object to the bevel base can specify on their order a plain base, shortening OAL by 0.03" which reduces weight to about 178 grains, depending upon alloy, to more closely approximate that of the WW2 Mk2 service bullet.