I've just started to put together a couple of forces for a first game using SoN rules and I was totting up points for artillery when it dawned on me that although artillery costs different points, except for heavy artillery going slower, they all have the same stats: they all have the same range (shot 40, canister 10), hit 5+ shot / 4+ canister, and roll the same number of dice (1 per gun shot, 2 per gun canister), thus making a 4 pounder the same as a 12 pounder.
Have I missed a section in the rules or misread something?