From their site.
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Heavy .38 Special +P Ammo - 158 gr. L.S.W.C.H.P. --G.C. (1,000fps/M.E. 351 ft.lbs.) - 20 Round Box
Check out the below velocities that I fired from my personal revolvers. We believe that real world, stock, "over the counter" guns, give real world results, so we don't advertise velocities that are fired from long test barrels.
These 38SPL+P loads are generating low-end 357 magnum, ballistics. If you have an older or more fragile 38SPL, or if you are recoil sensitive, consider using our HVY Standard Pressure 38SPL ammunition. It is safe to be fired in any 38SPL revolver and it still packs much more punch than ordinary 38SPL ammo.
Item 20A: 158gr., very soft cast, semi wad cutter, (Keith) hollow cavity, with a gas check. This bullet will mushroom violently on impact and will penetrate roughly 14 inches in human flesh. Again, this bullet is gas checked and will not lead your barrel.
S&W mod. 60, 2 inch- 1040 fps (379 ft. lbs.)
S&W mod. 66, 2.5 inch- 1059 fps (393 ft. lbs.)
Ruger SP101, 3 inch- 1143 fps (458 ft. lbs.)
S&W Mt. Gun, 4 inch- 1162 fps (474 ft. lbs.)
Item 20B: 125gr. Jacketed Hollow Point. This is the Low velocity version designed to expand under 800 fps. It will mushroom violently and penetrate roughly 12 inches in human flesh.
a. S&W mod 60, 2 inch- 1072 fps (319 ft. lbs.)
b. S&W mod 66, 2.5 inch- 1108 fps (341 ft. lbs.)
c. Ruger SP101, 3 inch- 1180 fps (386 ft. lbs.)
d. S&W Mt. Gun, 4 inch- 1258 fps (439 ft. lbs.)
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I have a couple boxes of these but haven't yet chronographed them in my guns. These velocities are likely realistic as they also attainable with judicious hand loading. Best yet, these are accomplished with a bullet of significantly more weight.