OMV Steel Grooved Bobbin for 3-1/2" Hulls

OMV Steel Grooved Bobbin for 3-1/2" Hulls

This isn’t your average bobbin. It’s the steel, grooved, ready-for-war kind of bobbin that stares 3-1/2" hulls in the face and says, “Let’s roll.”

Designed specifically for those longer hulls that think they’re better than everyone else, this precision-made bobbin keeps your crimp game strong and your loads clean. The grooves aren’t just for show — they’re engineered to grip, guide, and get it done.

Pair it with your OMV press and watch your hulls line up like they’re reporting for duty.

Built for big shells, bold loads, and folks who don’t do ‘standard.’