Yes- same Ed Huble. Much the same ballistics, plus a little when using 3 1/2" .5 Browning cases opened up, and in a Savage bolt action 12 gauge rifle with new barrel. Seems to me, the 12 bore shoots well over 1,000gr. at about 2,400 to 2,600fps. IIRC - just going from memory here - been a while since I read those ballistics, but 12,000 to 15,000FPE sounds about right. Not bad for a re-barreled $500.00 shotgun.