Oh I see . Then yes indeed it would be extra weight from batteries but I assume you ' re correct in that it requires too much power and decreases efficiency too much to be worth it . This might be more effective in electric cars one day , but the problem is that batteries still aren ' t efficient enough . I ' d be curious on how a system like this would effect a Tesla . <| sep |> Almost any caliber will work , but shot placement is of utmost importance . A . 22 LR to the shoulder won ' t stop a deer in its tracks . or in a weeks time . . 223 and 7 . 62 x 39 have sufficient energy to drop medium game just fine . <| sep |> if you cant turn off negative emotions while playing league you shouldnt play league in the first place