Wondering what the difference is in 115gr and 124gr (other than weight in grains)? I dont have a grain scale and some of my ammo was mixed, and try as I might, I cant seem to be able to figure out what difference 9 grains actually makes in the "real world"... And when, out of curiosity I put a couple 50 ct boxes of those two weights on a sensitive digital scale, they came out so close, i was asking myself, "Why the two weights at all?" Since I didn't get an answer, I'm gonna roll the dice and ask you guyz... Thanx! (I hope )