My son and I have taken literally 100s of head of big game using Accubonds in several different calibers, and neither I nor he has experienced any kind of poor performance with them. He uses them in his 257 Bee, 300 RUM and 375 Ruger, I use them in my 257 Bob, 257 Bee, 7mm RUM, 300 Wby, 350 RM. I have hunted a lot with them and have full confidence in them after taking many, many animals of all sizes with them.