I've been using Tin Star as that's what is available here and not much else. I've extensively tried it in 32-20, 38 Special, 38 Long Colt, 38 Short Colt, 45 Long Colt. It is a very clean burning powder and meters very well through all my equipment, Lee, RCBS, Lyman. The real thing that absoloutly has to be achieved with Tin Star is a high enough initial ignition pressure. If the chamber pressure is not high enough then it reacts particularily poorly and inconsistently, much more so than other VV powders like N310/N320. This isn't a problem if you're loading standard loads but for reduced loading then the amount if space in the case has to be reduced to keep chamber pressure up. I shoot very reduced loads and once I got down to around 3.3 grains with a 38 Special and 158 gr bullets I started having terrible ignition inconsistencty. Back up to 3.4 and the problems went away so the window at which this happens seems to be very fine. I solved that problem by cutting 38 brass down to 0.85 inches and seating the bullets deep. I got down to 1.5 grains with consistant ignition and no recoil.
cal44walker