Re: F-class rule?
Not allowed. Must be a bag, fist, etc.
(b) F-Class Target Rifle (F-TR) Rests
(4) No portion of the rifle’s butt or forend shall rest directly on the ground or any hard surface. A rear rabbit eared bag, small sandbag or a gloved hand may be used to support the rifle’s butt. Any rear support employed shall not be attached, clamped or held to the rifle in any manner. The rear support
may not be fixed to or protrude into the firing point. Mechanically adjustable rear support is not allowed.