Originally Posted by Coyboy
I have used 150 nosler bts in my 7wsm and have yet to have a blow-up or one not expand.
I wasn't trying to say the Nosler BTs are either great or terrible bullets. I only posted that initial information as two first-hand observances of non-expanding bullet ineffectiveness with pass through hits in the boiler room. The bullets just happened to be NBTs and I figured someone would ask if I didn't provide the bullet ID.
But for the doubters, I recovered both of these animals, skinned them out completely, and then field dressed and even butchered them later on the kitchen table. The exit holes in the hide were similar in size to the entrance holes. I was able to confirm the entrance and exit holes for each of the two hits where the NBT failed to perform even though there was plenty of impact velocity. Two years ago ago I met and talked with a fellow and he told me he and friends of his from out west experienced ocassional expansion failures with the NBTs also. They eventually switched to some type of Hornady bullet.
As to the NBTs, I would continue to use them, and did continue to use them after those two incidents, until the ABs became available. But between the NBT and the NAB, I've switched over to the Accubonds and prefer them in every way, other than they cost a little more. I find them to be every bit as good as the BTs in accuracy and performance. I find less lead in the meat surrounding the AB wound channels, yet they still expand well and cause a good wound channel. I've shot two big game animals with the 160 AB from a 7mm RM at distances of 730yds and 850yds - both bullets were recovered and both displayed adequate expansion.
I've not yet had an AB fail to expand on a game animal. But in all fairness, I haven't shot as many animals with them, or observed as many shot with them, as with the BTs.