#10307, "RE: TUBE baits...Jigs or Texas rig?" In response to In response to 4
Braided lines with flourocarbon leaders do not stretch (Especially 17lb leader!)hence you could have pulled the hook to a position that "Tore" or widened the hole in the mouth of the fish.
In your case, it sounds like you could have used a lighter leader with mono to "Shock-absorb" the impact of the hookset, or you run the risk of tearing the fishes'lip at the swing.
It was mentioned above that this could have been the case. I'd try a Mono leader in 10-12lb test(P-line flouroclear is a good choice) and will still give you enough strength to land the bigger fish.
Swim's right. Sometimes they just "POP" and there is nothing you can do.