Originally Posted by chrispro97
has the jsb express got a flat inside,their were two dies of mozzies the ones with a flat in the back are crap and have notice this in jsb express as well
This batch of Express are not flat inside, but the Mozzie's I have, are flat in the back.
My Steyr 110 loves these as long as I clean the barrel every 100 or so. 6 to 9mm groups at 55 yards.