While we all have bullets we don't trust let me say millions of deer, hogs, elkare killed each year, of those millions Nosler B Tips are used more than most I expect. Some will fail, the only way to find a defective bullet is to use it. I won't use core locks anymore for this reason same with SST's, even though I recoved all the deer shot with these bullets the performance was less than I liked. The 243, I've seen more deer wounded with this round than I like, but I've seen more wounded with the 30.30. We need to use the right tool for the job, and we need to practice. Don't use a 30.30 for field's, and don't use 300 ultra mags in the thickets.