Now I have a friend that did this on commercial ammo, which had the bullet bottom jacked. He made chisel shaped noses, blunt noses, drilled a hole in the tip to simulate a hollow point, he said they all grouped the same, no dif. course he was only shooting at 100 yds or so. Long range may have been a different story. He said you only need to flatten the tip a little to get the bullet to expand on impact.