Marksman

Lets get it done then

Level	Base Attack Bonus	Actions per turn	Reflex Save	Fortitude Save	Will Save	Special
1	1	2	1	1	1	Steady Aim, Hold Breath
2	2	2	2	1	2	Rapid Fire
3	3	2	3	1	3
4	4	2	4	2	4	High Ground
5	5	2	5	2	5	Gunslinger
6	6	3	5	2	5
7	7	3	6	3	6	Weapon Feat
8	8	3	6	3	6
9	9	3	7	3	7
10	10	4	7	4	7	Prestige Class: Sniper or Gunner
11	11	4	8	4	8
12	12	4	8	4	8
13	13	5	9	5	9	Combat Feat
14	14	5	9	5	9
15	15	5	10	5	10
16	16	5	10	6	10
17	17	5	10	6	10
18	18	5	10	7	10
19	19	5	10	7	10	Bonus Feat
20	20	5	10	7	10

Special

Steady Aim: As a full round action, you may take aim at a target. All attack rolls you make against that target next round have advantage.

Hold Breath: As a standard action, you may gain +5 to hit for the rest of the round.

Rapid Fire: As long as you don’t take a movement action during your turn, you may double the amount of ranged attacks you make each round with a weapon you are proficient with.

High Ground: Gain +5 on attack rolls made to enemies who have lower elevation.

Gunslinger: You may draw and unequip weapons as a free action.

Weapon Feat: Gain a Bonus Weapon Feat

Prestige Class: Sniper or Gunner

Choose One:

Sniper: Triple the range of ranged weapons you are proficient with. 

You may use Hold breath as a free action dex mod times a day.

Gain +5 Perception.

Gunner: You may use rapid fire even after you have moved.

Gain +2 to hit with all ranged weapons.

Gain +5 to Acrobatics.

Combat Feat: Gain a bonus combat feat.

Bonus Feat:  Gain a bonus feat.