.221 Fireball Striker

Looking for a .221fb barrel back from Sinnarms soon. Tried the short cartridge in the striker, the mag will hold one and it chambers fine. It will not clip and hold the second one in the staggered feed mag. But 2 is enough.

NECG sight fits right on the Weaver mounting rail, is there another open sight that fits? EABCO has a Bomar clone that fits a TC, are they the same bases?

Found somebody with one on a TC, it isn't a weaver rail, don't know if the mounting holes fit savage.