I use a standard load of 5.5g VVN320 under a 230g. Montana Gold hardball round. I shoot that load in ALL of my .45's. It's mid-level in power and gives me enough recoil to keep keen on follow-up placement. It's accurate and chronos around 850fps from a 5" gun.
I prefer to keep my reloads at a realistic power level. I'm sure it's fun to pop caps into paper with nary a bit of recoil, but I take another approach. I try to construct my practice loads to approximate carry ammo to a point. I believe that shot to shot control is very important and I don't want to get complacent with lighter loads. I use a combination of humanoid and steel targets.
This is MY procedure and I certainly wouldn't expect it to work for everyone.
I have used VV320 with very good results. Most of my off duty shooting is done at a local indoor range and I load for accuracy and mild recoil. Here's the load that has met both of those factors for me:
My usual IPSC/IDPA load is a 230TC over 5.1 N320 (190pf). For yucks, I put some Speer 200 SWCs over the same charge, and the gun was short-stroking. I needed to go to 5.3 to get the gun to cycle reliably. N320 is now the only powder I use in my .45's.
I finally got the 10mm together. Does anybody have any loads for the 10 with N320? I have found some with N330 and N340.
Right now, I am only using N310 in .45.
230gr West Coast RN
4.3gr VV N310
OAL = 1.245
PF = 175 to 180
"And by the way, Mr. Speaker, The Second Amendment is not for killing ducks and leaving Huey and Dewey and Louie without an aunt and uncle. It is for hunting politicians like (in) Grozney and in 1776, when they take your independence away".
Robert K. Dornen, U.S. Congressman. 1995
I shot N320 for a while; 5.2 grains with a 200 gr SWC, either cast or plated, did ok. A friend tried it with 185 grain JHPs (5.9 grains, as I recall) and got occasional off rounds. Some just sounded strange - he would stop and look as though it might have been a squib, but it never was - some gave short recoil malfs. This was prevalent enough that he shot ball at the IDPA Nats because he did not have time to redevelop loads with another powder. I would not use it with bullets lighter than 200 gr. Actually, I don't use it at all any more, back to 700X for a common powder in 12 ga and almost all non-magnum pistol ammo.