I might be placing this in the wrong forum, but here we go. I am going to Svalbard as a helicopter pilot for 5 months. I am going to have a short shotgun with slugs in the cabin. I am bringing a signal pistol. I am looking for a handgun for backup. I have a wide variety of glocks in 9mm. I fire almost 10.000rds a year thru my glocks shooting IPSC. I know the 9mm glock only has a limited penetrating and energy. So I have been looking on a 4'' 44mag and a 5'' 454 casall. Which one should i bring. I never shoot revolvers, and i bet I can shoot 6 9mm shots in the same time i can shoot 2 454 casall. what should I do? buy a magnum revolver or stick to my all time favorite glock.