I've always been in the Keith corner (heavy for caliber) so I've got several hundred 140 SST's and almost 8 pounds of H-4350. The books listed max around 42.0 grains and I carefully worked up to 43.5 and zero pressure signs with the best results at 43.1 (2,656fps 22" barrel). I hope to hunt with it, but its primarily a paper-killer. If I do decide to get more in-depth in the long-range game, I'll probably go with either the 135 or 153 A-Tip variety and try other powders.
