This is further to some successful tests with cast #225107 HP, next up was the new FX Hybrid slugs and the new H&N 21gr. .218" slugs, as with the cast boolits, they were fired on max. setting, prolly over 1000 fps., in my Sumatra 2500. The cast 225107 easily out grouped the other rather expensive slugs. The only thing close was H&N Barracudas at 21 grs. and the Hades 15.89gr. pellets with gun set at medium setting. All results were at 50 yds. with a breeze, top groups with the cast slugs was well under 1/2".
This may save some money on buying those expensive hard to find slugs from H&N and esp. FX.