The glove was to keep from pinching your hand between the sling swivel or hand stop, the stock and the sling. The padded fork keeps your rifle muzzle out of the mud when you put it down in a long prone match. There is a muzzle cover and something that looks like a micrometer for precision adjustment of the ladder sight on a 1903 Springfield. The glasses, stopwatch and scorebook are self evident. Something in that bunch is for blackening the front sight, but I can't spot it. The cartridge thing is probably a bushing for a cleaning rod. Someone else can add to these guesses.
