When shooting through some objects (like the spokes of the wheel of a cannon), though I see the enemy well enough, I get a sort of puff smoke on the cannon, as if my shot hit it and did not pass through as it should have. Have checked this several times, even allowing more space than needed on all sides. My barrel would have been between those spokes but not touching any.
Also, firing at a visible torso of someone reloading behind a tree, usually misses. The enemy is partially obscured by tree (about 60% hidden) but the distance is small (maybe 20 yards). I usually took several shots in such situations, just to confirm it's a bug. It seems to be a bug, maybe the tree hitmask protrudes more than the visible part and stops bullets?
While on the subject (also related), a man standing behind a full height fence is hidden about 50%, meaning my shots should score about 50% less hits when firing at those targets. Taking into account my matches so far, that is certainly not the case. Shots fired center mass have no discernible effect, I do not see my targets dropping or a free spot where I aimed in those situations, statistically speaking. Actually, I see no reason to fire at people behind wood fences, other than supressing them. On this last point, I would really like details (is hit percentage based)?