For those of you that know me, you know that I have quite an obsession with the Security Six revolvers (http://www.firearmstalk.com/forums/f16/i-need-help-somebody-stop-me-38415/
). My latest acquisition is a older 150 prefix blued model and if your unfamiliar with this model it has a flared grip frame that is hard to fid grips for as no one currently makes grips for the 150 pre-fix guns. Jay Scott used to make a pair of grips they fit both the 150 and 151 pre-fix guns although they are walnut and not rubber. You can still find them on on e-bay or Gun Broker occasionally. The easiest way to tell if the fit both pre-fix guns is they have two holes for the grip pin and the bottom slightly flares out.
I have been looking for a set for a while but can't find one. So I got creative and started experimenting with different set of rubber grips. I wanted the trigger guard to stop wacking into my finger. Well, after a looong search, I found a winner!
I altered some Pachmayr presentation grips made for a Ruger Redhawk and they, surprisingly, fit remarkably well.