I need some help. I have a Ruger M77 in .243 caliber. It is a cycling problem.
symptoms:

I cannot get just one case to seat in the magazine unlessI fiddle with it three or four times. WhenI finally get it seated in the mag,I cannot cycle it without it popping out of the gun. It is not cycling shells very well. The bolt rarely grabs the case no matter how many are seated in the mag. Any suggestions???