diyj98 I HAVE A T/C THUNDEHAWK IN 54 CAL. I YET HAVE NOT FOUND A SABOT BULLET MADE BY PERCISION THAT DID NOT SHOOT CLOVER LEAF GROUPS AT THE 100 YARD TARGE.I WOULD THINK THAT THESE TWO GUN ARE PRETTY CLOSE THE WAY THEY ARE DESIGN A QT40 235 GRAIN WITH ABOUT 100 GRAINS OF LOOSE PYRODEX SELECT WOULD GET YOU OFF TO A GOOD START
CHECK OUT THERE WEB SITE ALSO CABELAS SELL THEN IN CALLED EXTENED RANGE SABOT http://www.prbullet.com/