Does marking a bullet with a Sharpie have an effect on its accuracy? I was doing some shooting for load development today. Just 3-shot groups at 100yds. When loading the rounds last night, I marked a few with a Sharpie to verify the bullet was touching the lands. I put on a pretty heavy coat and did not wipe it off. Groups were eratic on the loads I marked. Then, at one load, only one of the three bullets were marked. Two went through the same hole, the 3rd about 3/4" away. The flyer was the Sharpie'd round. This got me to thinking that the ink could be impacting accuracy. Any thoughts? I plan to verify this load just to be sure, but was wondering if you guys had any opinions on this.