If you could fresh my memory up and describe who jack was in the game I could absolutely help you :D Long time ago since I played the game on my GameCube

I tryed that! I tryed killing him like ten times but i always run out of time.

Well i have the butterfly, and the TMP, and i looked at a guide and it said to shot his knees with the butterfly and then use the tmp on him, but i run out of ammo to quickly.

if u have the cash u should sell the butterflie for the killer7 i was able to kill jack on my first try with just 8-10 shots with the killer7 and i used a the striker on him to get him to kneel. and ignore the timer its just there to frustrate u don't have to worry about it unless u one minuet left and u if haven't done much damage than u are smoked. u have to have 50-40seconds left to escape the area

but if u run out of ammo u could try uer handgun i know its crazy but i saw a video of a guy beating krauser(jack) with just the blacktail and i wish u luck for the next part cause u need a crap load of ammo to go through. lets just say its going to be hell

well i only have it for the game cube right now and i did those exact things and i kill him very easy

Whoops seems like I made a mistak I uploaded my Mario Part 8 save file instead of my Resident Evil 4 file. But fixed it now so download ahead :D

The knife works just as fine too, but only when you have no bullets. If your TMP is strong enough, wait for an opening and then shoot his head and don't stop until you have to reload. I know his wing'll block two or three bullets, but it'll start a chain and do loads of damage.

My strategy was to use incendiaries to stop him, then use my maxed Broken Butterfly, then the TMP strategy. Done.

What I did when his was in his final form on Pro Mode on Wii version of the game was:

Shoot at his feet with the TMP, then when he was down, I sliced him with the knife, but if he was far away from me, I'd shoot him in the Head with the Broken Butterfly (or Killer 7... can't remember if I had that by then... either way, I shot him in the head with the Magnum gun I had at the time).

Also, when he was close and was about to attack me, I'd slice him quickly, than he stumbles back. But if you have the Magnum already equipped, use that.

I remember the first time I fought him on Normal mode, I kept getting killed by him, so I know how annoying his is the first time you fight him. He was the only boss I had problems with in that game. Well... had a little problem at first with the big centipede thingy, but did it second try! ^^

I really hope this helps you and anyone else who's stuck on this bastard, and hope I didn't go into too much detail (I've been told I do sometimes lol)