RE: Remington 7400
Vapordog, absolutely does shoot under 6" at 100yards. I will guarantee it shoots 3" with remington 130gr coreloks. And with 2" with Federal 130gr Sierra Premiums. And with 54gr of IMR4350 with a 210 primer and 130gr Sierra Gameking, I guarantee 1.5" groups.
I have had two of these 742 and 7400, and none really have an accuracy problem. None of them, that are cleaned by people who know how, have a jamming problem. Just that forearm screw that is the problem. A guy gave me a tip, to use welding tip cleaners to clean out the gas port. Works like a champ.