I came across a handful of 130gr FMJ FP intended for 38 super that mic's at .356". After consulting my Hornady 9th edition manual and comparing both 125gr & 140gr Hornady XTP's (which closely matched the bullet profile & weight) I loaded them with 6.0gr Power Pistol (in the middle range) and set the COL at 1.450". Seat the bullets normally.

I shot them thru my 4" 686 and they shot very well actually. Not match grade but accurate enough to hit a 12" steel plate at 50 yards. So with these bullets you have I would suggest trying 4-5 rounds first at COL of 1.450" and start off with 5.5gr Power pistol.
If using Hodgdens, I like Titegroup. Start off with 2.7gr but no more than 3.1 max. Again, a COL of 1.450" and that is with the bullet seated normally; pointy part going downrange first.