Here’s what a hundred hours worth of grinding will get you.
Is it worth it? Well… no, no it isn’t. You’re still subject to the whims of RNG. A 7% reduction to the overall dispersion area is nice but it’s not world ending. In practical terms, it will yield you a slight increase in the number of hits per shells fired, but I don’t feel it’s worth the slight reduction in rate of fire. I’d like to extend a thank you to Wargaming for providing access to this module so I could put this graphic together (finally).