Lyman Replacement 1/2"x.093" Standard Hunting Sight Disc (3060960) Type_Case Gauges & Comparators Recommended Twist Rate: 1 in

Recommended Twist Rate: 1 in 9" Twist or Faster

Their brass is comprised of 70% copper and 30% zinc and is vertically drawn during the manufacturing process which results in more uniform wall thickness

The unit works with standard shellholders and includes the small and large primer cups and rod assemblies

This kit improves scope mounting two ways

Muzzle Velocity: 2263 fps

Lyman Replacement 1/2"x.093" Standard Hunting Sight Disc (3060960) Type_Case Gauges & Comparators Recommended Twist Rate: 1 inThis is a Lyman standard hunting Sight Replacement Disc, 1 2" x . 093" for Lyman 90 MJT Target Receiver Sight for most 22 bolt action rifles.