Forster Rimless Headspace Gage GO length for 8mm x 57 Mauser. Used for checking the current SAAMI-specified 19 degree shoulder angle.

Forster Rimless Headspace Gage GO length for 8mm x 57 Mauser. Used for checking the current SAAMI-specified 19 degree shoulder angle.. For instance unsupported brass fired in a rifle action with excessive headspace can rupture allowing gas to blow rearward like rocket exhaust. Because your safety is on the line Forster Headspace Gages are made with painstaking care and exacting manufacturing standards to ensure accurate testing of your rifle's chamber. If a rifle closes on a GO gage the rifle ch