I have a friend who shot quite a few through pine boards and into dirt. His were 45 cal. Or 44 cal. And almost everyone mushroomed out perfectly. His were from a 18" wrangler rifle. I would imagine a tender would perform the same. I think that they are high class and would be fine. Years ago, i had 35 remmy in a 14" tender and it loved the hornaday 180 singleshot bullets.