DTACs were hard to get a hold of same time frame yet DTACs are now available again. DTACs are made by Sierra also.Sierra did indeed make the bullet, but it was Blackjacks design. I shot several thousand of them. Sierra never filled contract orders for 2+ years and blackjack had to fold up. Low and behold sierra comes out with the exact same bullet in their own boxes. It's fd up. Very low dirty move.