Re: .257 87 grain TNT projectile does not exit?
I believe the TNT bullets are really designed for slower speeds than you are probably shooting them.?? In other words, they are nearly frangible at higher velocities. It doesn't suprise me that they wouldn't exit alot of times if that is the case. They may be coming apart inside the coyote and not have enough bullet mass left to carry on through. Complete penetration certainly isn't necessary, unless you need to blood trail one.
I used to shoot 85 grn Nosler BT's out of the 25-06 at around 3600'/sec. Most of the time they would exit, especially if it was a broadside lung shot. If I am remembering correctly, the TNT bullets are really recommended to be used at slower speeds? I think the Sierra Blitz bullets are the same. There are probably other bullets out there too that were really designed for use in slower 25's like the roberts and such. The only danger in using a nearly frangible bullet is if a very close shot hits bone first (point of shoulder, ect) it may not be able to penetrate into the vitals. I had this happen once on a Raccoon at about 5 yds with a 52 grn HP coming out of the Swift at 3700'/sec...........had to shoot it again.
Last edited by SBruce; 07-26-2010 at 04:40 AM.
Reason: more info