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Here is picture of the 12ga wad column using two BPI BPGS seals, Flexseal,cork, and sabot. Bret in MN has, in a long heavy rifled barreled Savage like mine, gotten 28-3000 fps with a 500 gr XTP bullet in the sabot with a 3.5" plastic case. And it extracts ok with the Savage bolt action extractor. He is using slow shotgun powder, Alliant Steel.I can't get that high in my NEF 12GA FH and make the extractor work with the Alliant Steel powder loads. The NEF handles pressures fine, just doesn't extract like a bolt action Savage 210. Using RE17 without cork, I get 28-2900, with max of much slower RE17 with 420gr slug in the sabot.The case shown was fired with the RE17 load like that....Ed |