Really well done and well written. As is said, the proof is in the puddin'
Questions: F(TR) - whatzat stand for
Found the answer on benchrestcentral.com:
F-Class Target (F-T/R) - A rifle restricted to the chambers of unmodified .308 Winchester/7.62mm NATO or unmodified .223 Remington/5/56mm x 45 NATO cartridge cases. The rifle must be fired off a bipod, rigidly attached to the rifle's forend, and/or a sling. Any bipod, meeting the definition of a bipod, may be used but its weight must be included in the rifle's overall weight. Any safe, manually operated trigger is permitted. Any sighting system is permitted , but it must be included in the rifle's overall weight.
The provisions of Rules 3.16 and 3.16.1 apply to the definition.
(1) The rifle's overall weight, including all attachments such as sights, sling and bipod, must not exceed 8.25 kilograms (approximately 18.15 pounds). An "attachment" also includes any external object, other than the competitor and apparel, which recoils or partially recoils with the rifle, or which is clamped, held, or joined in any way to the rifle for each shot, or which even slightly raises with the lifting of the rifle from its rest/firing point.
(2) The rifle must be fired in the prone position from the shoulder of the competitor using rifle rests as defined 3.4.1(b).