In case you don't have the information.... here are the BCs for Sierra .22 rimfire bullets at three velocity ranges....

http://www.exteriorballistics.com/eb.../22rimfire.cfm

Looks like a BC of about 0.17 for a 41.5 gr bullet with a slightly bigger diameter would be a good guess between 905 and 1047 fps.... Starting at 1000 fps (92 FPE) it would retain nearly 80 FPE at 100 yards.... With a 50 yard zero, it would be about 1/2" high at 30-35 yards and only 8" low at 100.... Wind drift in a 10 mph crosswind at 100 yards would be only 2"....

Bob