Originally Posted by judgecrater
I have tried that. The variation in brass and bullet weight will conceal a double charge.
^THIS^ Unless you are talking charge wts over about 8gr, you can't find a small charge cariation, even 5gr isn't reliable using mixed brass.
"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".