Interesting. I still have some of those old early 90s 7mm 140BT in the same box I loaded the one from that "blew up." and I have a box of new ones I bought as blems off SPS. I could try to section both and see if there is any visible difference in the jackets. I can say the .270 140 BTs I used penetrated well (but those were longer range shots too than my 1992 "blow up", which makes a big difference). Nothing recovered except one full length shot hip to far shoulder on the big Mulie buck.
Obviously the .338 200BTs held up fine, in and out. Both those deer ran a short distance on lung shots and fell dead.
Cheers,
Rex
