For Question #2:
(10) No person shall possess or use tracer bullets, bullets with full metal jackets, blow guns, guns powered by compressed gas, animal traps, slingshots, crossbows, poison, explosives or snares. Legal game mammal hunting weapons include rifles, shotguns, handguns, bows and arrows, spears and knives. Only weapons that are authorized for the particular hunt are to be in the hunter's possession, while on the public hunting area.
(11) With respect to the use of handguns and handgun ammunition, the following conditions and restrictions shall apply:
(A) No person under the age of 18 years shall hunt game mammals with a handgun.
(B) Center fire handguns shall have a minimum barrel length of four and one-half (4 1/2) inches for single shot pistols and revolvers and five (5) inches for semi-automatic pistols.
(C) Straight-wall cartridge ammunition shall be 357 caliber or larger with a minimum case length of one and one-fourth (1 1/4) inches (Exceptions: The 10 mm auto mag and 45 win mag cartridges are allowed despite their shorter case length).
(D) Necked rifle-type cartridge ammunition shall be 223 caliber or larger.
(E) All handgun bullets of less than 43 caliber (.429 inch) shall be of the expanding type. Bullets of 43 caliber (.429 inch) which do not expand shall be of the flat-nosed (semi-wadcutter) or round-nosed exposed lead type.
(F) Single or double barreled muzzleloading handguns shall be 44 caliber or larger, have a barrel length of at least nine (9) inches and use at least 60 grains of black powder or equivalent, and use a projectile of at least two hundred (200) grains weight(slug or round ball of 51 caliber or more).
(G) It is prohibited to use any "muzzleloading (black powder type)
Complete Hawaii Hunting Regs can be found at
http://www.state.hi.us/dlnr/dofaw/rulesindex.html