The JSB pellets are to big for Harper polygroove brass .30 barrels which are closer to .295".I know of the whereabouts of a few tins of the correct ammo. I heard of a Harper .30" Sharp Innova conversion. Bet that went well
Polymag 44.75 grn .30 calibre pellets on that forbidden bay zone. Think I will make up a .30 barrel conversion for a BSA Spitfire for fun, will probably see the pellet travelling at only 340 fps.
Baz
Last edited by Benelli B76; 18-04-2019 at 11:06 AM.
BE AN INDEPENDENT THINKER, DON'T FOLLOW THE CROWD