Going elk hunting this fall. was wondering about mabye going to a heavier arrow. currently using acc 339 with montec 100 grian heads total arrow wieght is 377grn shooting 277fps out off a botech BK2. went to jacksons arhery page and got 66 ftlbs of torque witch is good I think, but I' m wondering about longer shots with the lighter weight. the kinetic II are heavier but will they fall off faster?