Avenger Minigun Weight 12700 grams = -12Burst AP: 7, Range: 35, Rounds: 40 Combat Leather Jacket Weight 3175 grams = -3Armour Penalty = -255mm AP Weight 9 grams, for 500 its 4500 = -4Total = -44 35 hexes vs Pe 10 is (50-35)*6 = 90. +44 for penalties = 134.134 to sneak into minigun range vs a Sniper from behind, 159 vs back/side, 184 from from front/side and 209 from the front. First shot advantage vs a Sniper who has no sneak, just need reasonable sneak skill (134-209%).*Insert hundreds of other applications here*
If you want to make enemies, try to change something.
If you can't think of any applications of this then Sneak is not for you. It is not a skill to allow a CA Minigunner to run about in invisible mode, you have to sacrifice in some areas and gain in others.
* Sneaking opponent's Sneak is modified by angle by substracting 0, 25, 50 or 75 points, depending on the look direction (back, back-side, front-side, front), reduced by 25 for wearing leather armor (any kind) or 50 for wearing any heavier armor (sneaking in powered armor is not possible). Also, 1 point is subtracted for every 1000 points of inventory weight, rounded down.