i have a ruger sbh with a 4 3/8" barrel and i use either a 44 spl with 250gr penta hp/7.5gr of unique or the 44 mag with 280gr wfn gc/10.0gr of unique (my deer load). i guesstimate is the 44 spl is going 900-1000fps and the 44 mag is around 1000-1100fps. i should use my chrony, but i don't.