257 Ackley Improved
$135.00 – $175.00
Reamers are available in both Roughers and Finishers with a Solid Pilot or Removable (Live) Pilot. Pilot Bushings to nominal bore diameter are included with removable pilots. Additional Pilot Bushings can be purchased under Pilot Bushings.
TiCN Coating, formally known as Titanium Carbo-Nitride coating, is an all-purpose strengthening coating that does especially well with cutting applications. Adding a total thickness of approximately .0001″ – .0002″ (2 – 5 Microns), TiCN coating will lengthen the life of your reamer and keep your tools sharper for longer.
Oil grooves are an available option for all chamber reamers over 22 caliber. The grooves allow for a better flow of cutting fluid as well as flushing of chips.
The 257 Ackley Improved uses a 7X57 Ackley Improved GO Gauge, and the standard 7X57 Mauser GO gauge is used as the NOGO gauge.
|Dimensions||2 × 2 × 2 in|
|Rougher or Finisher||
|Solid or Removable||
Removable (Live) Pilot, Solid Pilot