User blog comment:Artemis Paradox/The Official Monster Hunter Wikia Help Blog/@comment-1712810-20110622115211/@comment-969093-20110622121800

Bowguns and Bows are indeed popular weapons to take care of G Gravios/Rajang. Pierce Bows and Water/Pierce S focused bowguns for the Gravios and Rapid Focused Ice-Elemental Bows for Rajang.

The thing is, a normal melee run on HR6 Black Gravios can easily last 15-20 mins, while a gun can easily shoot it to bits in less than 5 minutes. I can know, we've done it in 2 mins with 2 guns.

Gunners at your level would most likely want evasion up skills or an armor with Guts on it. Narga X is a pretty good all-round HBG armor set thanks to the Evade Distance Up and Evasion Up, not to mention the gemming possibilities. For Bows Lava X is rather wanted. Focus + Guts make for a good general-purpose survival set with good elemental resistance. It's easy to gem as well.

Depending on your skill priorities, you'd either want to go for one of the aforementioned skills, or you can work on making the Element Atk Up, Evasion +2, Auto-Reload custom or (insert shot type here) UP skills. I actually tweaked that famous custom to have Focus, Element Atk Up, Evasion +2, which is way better for bows.

Armor recommendations for gunners from a general point of view:


 * Hermitaur Z (or X, I forgot which one had guts) - Guts, Clust Up, etc.
 * Narga X - Evade +/Evasion Up and good gemming possibilities.
 * Lava X - Focus, Guts and TerrainDMGNegate + good gemming possibilities.
 * Fatalis Z - Evade +, Guts & Andrenaline, Load Up.

For bow(guns):


 * Daora's Sagiitarii (might've misspelled the name)
 * Lava Storm, a great versatile LBG, pierce S lv3 (we've got a bowgun list for mhfu, which I made, have a look at that to pick a good gun).
 * Carmine Bow? (I forgot if this was the epic water-element pierce bow...)