I bought some Federal Sierra Matchkings BTHP. I've never bought these before, I noticed the tips are at angles. The tip of the slug has a small hole like any other hollowpoint. The top of the tip isn't uniform, it's sloped to one side, as it would be if someone carelessly ran a file across the top w/o keeping it at a right angle. What I mean is, if you were to stand the bullet on a table w/ slug pointing up, and if you were able to balance a straight edge across the tip of slug, youd see about a 15 or 20 degree lean. Is this right? Is this a problem? This is supposed to be accurate ammo. ??