Yep, as much as I loved my 3N37 .38 Super loads, after @fxvr5 turned me/us on to N-105 in .38 Super, that's the ticket, and heck, I had some all along.get a pound of VV-N105 which has been awesome in 38 Super.
Works great, N320 is a bit more versatile, and also works great, if you ever order it, or see it local, get both to try. I buy the four pounders now.Would love to try some N310 for my 45's.