first of all, not perfect but good build, i dont see if its PvP or PvE sniper..
snipers are usually used only in PvP so i will take it as PvP build, especailly since i see finesse, vs npcs its easier to just kill them then wasting time by crippling them
in special goal of every sniper should be :
1 ST, CH, IN
PE 9-10+sharpshooter
EN 9-10
AG 8 for crippler, 10 for dmg eyes sniper
LK 9-10
for dmg sniper you can achieve 10pe 10en 10ag 10lk without bonehead or 1 less of something with bonehead easily without implants
for crippler its more complicated
Perception 7 (Sharpshooter +2 PER when it comes to range and cigarettes = 10 PER )
8pe+ss is not enough to have enough hit chance to eyes at max range with sniper rifle
8pe+ss is not enough for sniper rifle with + range bonus, max range is 52, not 50
its good to see few more hexes behind your max sight range to see enemy snipers before they start shooting you
i remember times when i was stating in pvp, my first two sniper builds had 50 FoV and i was like "its fine, more is waste" but over time i completely changed my mind and i would never play with less then 56 FoV, sniper is not only about shooting but also to give info to your teammates, you need that perception for hit chance and also to see enemy snipers earlier so in my opinion is 10pe + sharpshooter must have
unless you are using psycho, if you get 10pe base + use cigs + use psycho and sharpshooter you can have 53 FoV on psycho, i know about at least 2 good snipers which are using psycho on sniper ! but then you may need to sacrfice something else like 9 EN or 8 AG which is fine for crippler but thats too much deep, better forget about psycho for now
Intelligence 3 (Dont bitch about INT,just level more)
you can drop your INT into 1, after completing marshal quest and reading SG books you will be able to pick all perks even with 1 INT but good sniper build with 1 int requires about 60-100 lvl
Agility 10 (I Dont even have to explain this)
why 10 ? you can use 9 + nuka cola
buffout is waste because 1 ST is enough and even after using buffout your ST will remain 1 because jet takes 2 ST
soo using buffout on sniper is just 1 lost special point
Luck 9 (That 1% doesnt really mean much,but you can make some modification on this -lower something so LK is 10 )
as A3 and mojuk explained, you are wrong at this one, 1 LK is much more for aim shots then just 1 crit chance, depends on where you are aiming, to eyes its 3,4% for each LK
Traits :
1. Finesse (http://www.fonline-reloaded.net/wiki/index.php?title=Finesse)
2. Small Frame (http://www.fonline-reloaded.net/wiki/index.php?title=Small_Frame)
If you are making a DMG sniper instead of a CRIT sniper you can take bonehead or smth else
yeah for dmg sniper i would definitely pick smallframe and bonehead
but even for crippler i would go for finesse and bonehead instead of smallframe
as sniper if played properly on big pvp fights like TC, you will mostly fight only with enemy snipers and thats when bonehead is most important thing, not 1 or 2 special points
where to get special points to get bonehead instead of smallframe ? well for crippler i would go for 7+nuka AG instead of 9+nuka because 11 or 12 AP is not big difference for crippler, arm/leg shots costs 5 ap each so you can still shoot twice while you are in both cases still far away from 3 shots
dmg sniper should go for 10 AG but he should have more special points thx to smallframe instead of finesse but thats offtopic, lets stick to crippler build now
Perks:
perks are fine maybe except RBTE, it reduces only crit chance mod on enemy helmet which is about +10% crit chance vs combat helm to eyes.. thats fine but most of cripplers are just aiming at arms until target is crippled/drop weapon and then groin to finish him/not let him run away, if you target has too high str, maybe MoS and things like that then it can be a good idea to blind him but wasting one perk for it is in my opinion not good idea since your main priority is still crippling arms and you can do blinds fine even without RBTE
instead of RBTE i can recommend some of those perks : even tougher (vs sneakers and bursters), man of steel (vs snipers), action boy (more rate of fire is always good for sniper)
btw
gauss rifle has 53 max range = more hit chance needed while 1 more ST requirement then sniper rifle = even more hit chance needed
to get enough hit chance for gauss you may need to use buffout and wear CA with +ST and +AG or +ST and +AP bonuses to get 2 ST (or 3 with ST implant) without losing action points.. or just use power armor
same goes for bozar