These JSB Exact King Heavy MK II are the brother pellets to the original .25 caliber heavies. Produced to supply the demand of a smaller skirt size which allows us to cycle and load these through our magazines like a well oiled machine. Same great accuracy and punch found in these as the originals. Where there’s power there will be JSB heavies!
It’s all a balance between power, weight and twist rate. If you get those right then you will see the results!
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