I retested the information because I was working on Aircraft gun damages. What follows is even more accurate.
5" US = 156lb
4.5" US = 93lb
3.5" UK = 140lb
RS82 USSR = 93lb*
RS132 USSR = 125lb*
WGr21 GER = 200lb
*By the time I got to the Russian rockets I was thoroughly bored and wanted to actually fly. The RS82 did not inflict 95lbs damage but did do 93lbs it really could be 94lbs but I didn't want to drive myself insane. Likewise the RS132 did not do 130lbs but did do 125lbs it could be 126lbs - 129lbs.