My Nevada brother handed me a his Rem 740 series "elk rifle" back when I was gunsmithing, several decades ago. Primarily for the fact that the first shot went about 6 inches high and to the left of all subsequent shots. Cold and clean, or cold and fouled. After doing everything I could think of I called Remington.
"Well, if you happen to figure it out, would you give us a call ?. Sometimes a new barrel helps, but not always" was what I got....
. Nope, never figured it out. Either of us.
My home built trigger weight scale only goes to 17 lbs, and would not trip the trigger. I got it down to 6.
I put together a RU77 tang .270 on a modified Brown Precision stock for him. The modification being to cut the wrist out a bit on top for the ball of the thumb and a Bondo palm swell. I had done the same previously for a M98 I had. Worked and felt really good.
He's still using it 30+ years later. The 98 is long gone... another one I shouldn't have sold....