Lvl	Atk	Success Chance	MP
1	35-36	20%	20
2	35-36	22%	20
3	36-37	24%	23
4	36-37	26%	23
5	37-38	28%	26
6	37-38	30%	26
7	38-39	32%	30
8	38-39	34%	30
9	39-40	36%	33
10	39-40	38%	33
11	40-41	40%	36
12	40-41	42%	36
13	41-42	44%	40
14	41-42	46%	40
15	42-43	48%	43
16	42-43	50%	43
17	43-44	52%	46
18	43-44	54%	46
19	44-45	57%	50
20	44-45	60%	50

Shooting the bow with a chance at doing 2x damage.