Need a little help here as I have had a rather strange experience at the range this morning. Shooting my 22-243 middlestead with, with an 8 twist, 75 grain a-max's over 47 Gr. 4831sc. At 100 yds. I can see a group forming of about .75". When I fetch my target there are only 3 holes in the paper. I fired 5 rounds! Repeat the process. There may be 4 holes in this target of 5 fired. When I hold these targets up to the light I can see several tiny pin holes in the paper. Velocity of theses bullets is right at 3600 fps. Has anyone had these bullets blow up on them and at what kind of speeds.