Hello guys!! Had some federal brass Layin around already once fired in another gun both rem model 700's in 7mmrm. Shooting vld's and loaded 168grn Bergers in them doin the ladder step for finding bullet seating depth. While loading the longest coal for the round as suggested for using hunting vld's and the long ones chambered fine. Not even thinkin about it I took my 5 minute drive to the range. Shot the longest rounds fine. Picked up the shorter coal and to my surprise the shorter rounds would not chamber and for the life of me I can't figure out why I got back home and mic the brass again and all the measurements are as specified in my manual so I could use some help in the mean time I'm gonna go with some Winchester brass and see what happens as Winchester brass has never given me this problem and can't figure out why a bullet seated further away from the lands will not chamber???