Some misinformation on here. Been using NBTs since 1984.
Brad is correct, the BTs came out in 1984, maybe even 1983 for a few calibers despite what their website says. I loaded the first 7mm 150s in 1984 and killed a buck with em in the 7RM. The gun store clerk even told me to load em hot since his experience on deer was they were tough in the 30 cal. This was in the summer of 84 so he might have used em the season before? Anyhow my friend wanted to shoot them too so he bought the dies and 180BTs for his 300 Weatherby and he shot a buck that year too.
I still have one older box of the 7mm 150s and maybe an older box of the 30 cal 180s I'll post up later.
The 7mms and 30 cal BTs were never a varmint bullet as claimed by some. I killed alot of antelope, deer and bears with the 7mm 120, 140, 150 and 30 165s BTs and they never do as much meat damage as Sierras GKs of the same weights
