I started a regular shoot at our club for hunting rifles from field positions at game targets.

http://arizona-rifleshooting.com/hunting-rifle-shoot-PRGC.html

This is on the same range where we shoot CMP/NRA High Power, Service rifle, mid range and F-class (200 to 500yd with heavy target rifles, either sighted AR-15/M1 etc or scoped benchrest style rifles.

I would say it is an order of magnitude more difficult to shoot a decent group with a lightweight hunting style rifle from a field position than it is for a serious competition rifle in any of the above sports. That is, a guy who can put a 10-shot group in the 10-ring at 300yds in 70-seconds with an iron sighted AR-15 using a coat and sling will have trouble hitting the vital area of a deer target at that distance more than half the time firing slowly 1 shot at a time using a hunting rifle resting on sticks or a backpack.

its not the mechanical accuracy of the rifle, its just so much harder to hold a lightweight gun still from an oddball position.

Poole