The only way to get infinite bullets is to play though the game once, then buy the Chicago Typewriter (Thompson SMG) from the merchant for 100 000 000 ptas. It has infinite bullets.

Sorry, you can buy the Chicago Typewriter for 1 000 000 ptas. My mistake!

beat the game get the and take hand cannon then upgrade to max

the IRL (infinte rocket launcher) also costs 100,00,000

get an action replay and choose re4 (real name) and press "A" on infinite ammo. ^_^

i dont know if it works but a site said you get handgun or shotgun bullets then you go to the merchent and sell one bullet, save, and press reset on your gcn and when you load your game again, you will have infinete ammo

you can get it by using only pistol and knife no upgrades no saves and no dies (i think no
dies) u get unlim ammo and the give u a letter saying how good u are at re4

if u are playing normal mode u dont need it cuz its easy i already completed game 5 times
(3 times on pro and 2 times on normal)