The Slufoot mod is complete. Tested loading pressure with 200 SST and light blue sabot. On a clean, non lubricated barrel, measured 35 lbs. A 200 SST knurled up .002, measured 40 lbs. I haven't shot it yet. I plan to have a range session Friday in the predicted cooler weather. I plan to knurl all my bullets for two reasons. 1) Increase loading pressure. 2) The light blue sabots are so hard and slippery that I think a knurled bullet will bite the sabot better and not slip due to the 45-70 faster twist rate.