Hi all, I have been reloading for my sako 6.5x55 and things have been going pretty well, but more and more I am starting to get some inconsistent groups. I began noticing that when I chamber a round from the magazine or gently place the round into the chamber with my finger tip, when I close the bolt, I get a little resistance. Many times this is normal because I typically neck size and just assume that I have a snug fit. but, when my groups started to get a little bigger, I started examining the cartridges that fit snug by extracting them from the chamber rather than shooting them. what I noticed was a shiny abrasion right at the ogive on just one side of the bullet (see pic). What is causing this? some of my reloading info: Neck size lapua brass, RCBS dies, 3rd firing of this brass, berger 130 gr. vld, bullets are seated well off the rifling (.072). This is the minimum seating depth that would allow me to get a one diameter width of contact in the neck. Also, sakos have REALLY long throats to accommodate the bigger 160 gr. round nose bullets which is why the seating depth appears so far. I am struggling for reasons why this is happening....bullet seating alignment? chamber burrs?