This is a finishing chamber reamer with a solid pilot. Unless noted, it is designed to cut a SAMMI minimium specification chamber. We recommend measuring the bore of your barrel to be sure this reamer will fit properly. We often also have a finishing reamer with interchangeable pilots that will allow you to fit unusual barrel sizes more precisely.
The 280 Ackley Improved Original gauges which are 0.004\"" shorter than 280 Remington gauges and now the new 280 Ackley Improved SAAMI gauges which are 0.014\"" shorter and compatible with factory cartridges. Be sure you know the needs of your project before renting.
This reamer is made from high speed steel and is not suitable for hardened steel barrels. We offer a limited selection of carbide reamers for cutting chrome barrels. NOTE: Insurance does not cover damage caused by a hardened barrel.
