Small OHK radius, medium blast radius of 50%ish, large blast radius for 35%.
I agree nerfing the scatter for something that's devestating when hits is just annoying for the user and the target.
Currently I find it's more of an 75-90% ish damage on a whole squad with mabye 1 guy dying if they were at full hp so I think reducing the medium damage would work. That's an instant retreat or squadwipe with followup though.
Also in live the pack howitzer is currently really good if uncountered, but totally useless if a stuka or LEFH is on the field(pzwerfer is a little less potent). I think increasing it's survivability a little bit would help to make it still a useful unit if it's not going be as offensivley potent. As good as it is right now, it still won't pay for itself if one of those 2 units is on the field, there's not much point in even recrewing it. Shouldn't be so strong but also ideally shouldn't be countered so hard.