Re: remington 700 chambering/ejection issue
Dis-assemble and clean the magazine box, you'd be surprised at what I've found in some. Be sure to clean the underside of the feed rails. Mag springs on hunting rifles don't usually have issues like auto pistol mags sometimes do, but, ya' never know. If the mag spring looks like it's bent 'funny' (nose down) changing the spring may be the answer, it's a $7/$8 part. Let us know what you find.