Fred,

I'm not aware of any problems with the new or old 700's that would cause what you describe other than the fouling issues already mentioned.

If you are 100 percent certain the problem doesn't lie in the trigger, and that you can repeat the same problem using factory ammo, then the problem is likely with the bolt. If the bolt is not completely in battery (closed), then it is possible that the cocking piece could be dragging as it moves forward.

Look the cocking piece over closely for signs of contact such as drag marks on it's sides. Make sure the stock is not preventing the bolt from fully closing. It's mechanical, so unless the tolerances are so out of whack that temperature and expansion is somehow interfering with the movement of the firing pin assy, then I don't understand how or why it is occurring once every 50 rounds or so. Good luck!


Lock, Stock and Barrel gunworks
SLC, Ut
USMC 69-73

"This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life."