Forster Headspace Go Gauge Belted Magnum, 300 Winchester Magnum, 7mm. Mounts - A key component of

- A key component of this patented shoulder system is its spider harness

TST is a series of three graduated rings in the parallel section of the choke that allow a more gradual transition from the shotgun bore to the final constriction that conveys a host of benefits to the shooter like reduced pellet deformation a shortened shot string and less flyers

MCK comes in two version one is a NON-NFA product (with standard long stabilizer brace) and the other is a NFA product (with stock)

It is protected by the Burris Forever Warranty

6/556 - Length: in/mm 16

Forster Headspace Go Gauge Belted Magnum, 300 Winchester Magnum, 7mm. Mounts - A key component ofEvery gunsmith knows that proper use of a headspace gage is the most reliable way to test the length of a rifle chamber. "Headspace" is the distance between the face of the breech and the base of the cartridge when the action is closed and excessive headspace can be dangerous as well as impair accuracy. For instance unsupported brass fired in a rifle action with excessive headspace can rupture allowing gas to blow rearward like a rocket exhaust.