Bullets don't always every time perform the same. Lots of things can factor in to that. The Accubond has a very good reputation so l wouldn't give up on it if they shoot good in your rifle
Yes, if you shoot any bullet enough you will see an unusual result. And it could of course happen early on.
I load the 140 grain Nos. Part. for my Wife's 6.5x55 and here backup CM, she has harvested 2 young Bull Elk, both shot in the shoulder and out the other. And every time she shot a Whitetail penetration was complete with good internal damage, but one time she shot a young Buck and for whatever reason the penetration was not complete, no exit, VERY little blood. I finally found him, the bullet certainly killed but out of character never the less.
Samples of one are just that but worth noting just the same.
Thanks for sharing.