I tried the stock mod on FOTRS. I set up for a Dick O'Kane 90 degree attack at 800 yds using manual targeting with the Easy AoB, and picked off a two large troop ships and one medium passenger ship travelling convoy style. It was a single attack with a salvo of six shots, two for each ship. Hit them with two shots each. The scopes looked good.
Then I blew a single attack on two freighters usig aft tubes at over 3,000 yds.

I must have been over enthusiastic.