Check to be sure your bolt handle is positioned properly on the bolt. If it was welded on too far back you will have lost primary extraction. The bolt will open but it is not cammed back by the extraction cam on the rear of the receiver bridge ( 10:00 O'clock). Measure the gap between the front of the bolt handle flange and the rear edge of the bridge when the bolt is closed and locked. The closer the better. Max gap of 0.050" is tolerable. If it is near 0.100, you have no appreciable primary extraction to break the fired cartridge case loose.
RAN
That... The primary extraction cam on the 700 is pretty 'Mickey Mouse', IMHO - compared to other rifles which have a much more beefier system..
