centerfire bullets ricocheting off the ground is a very realistic and dangerous threat. I think folks apply that same logic to rimfire, but my question would be is there a realistic threat in a soft 40gr projectile going roughly 8-900fps at point if impact with grass/dirt 150yds away, and then richoceting enough to go another 60-70yds plus clear a 20ish ft berm through a tree line and cause damage to something/someone in the 65yd range? Idk...
My hypothesis is that going over the 200yd berm through the trees into the 65yd range via a skipped shot is unrealistic, but would require further investigation to know for sure. The risk of forgetting to rezero your turret after shooting out to 300+ and sending one clear over the 200yd berm is more realistic. One could make the case that its the same for centerfire, but for folks who only shoot at Harvard and have access to max 300yds (which I imagine would be most of the users), the elevation adjustment difference on a centerfire rifle between 300 and back down to 200, even if they forgot to adjust their scope, would still put them in the berm. The solution to this is simple, although possibly not easily feasible...build a taller 200yd berm.
For the 300yd half, I don't see the issue unless folks are pointing their gun in an unsafe direction, which is an entirely different discussion.