Airsoft is full of myths that are never well founded let alone proven. Bolt action rifles are no exception to this, I sometimes wander whether those spouting the "needz moar upgradez" line are those who have bought into the upgrade route and are simply trying to justify their own expense, and I know for a fact some are trying to put off new players from sniper roles in order to make themselves appear more l33t.
With sniping there are lots of things that will cause you to have a bad day and bad accuracy, more so that with an AEG
1) if you cant shoot you cant snipe and if you have never shot accurately before you will not be a good sniper on day one. they are a different game to assault weapons, they are their own discipline and take a degree of marksmanship, patience and field craft. Stuff you don't learn on day 1 of skirmishing, (1a) it takes time and practice.
2) They are cheap and they are Chinese, they are not built pristinely, by those who love to build precision guns. They will be full of gunky grease, screws will not be tight and bits will be in wrong, Any new gun (even aegs) should be stripped cleaned re greased and tightened up again, clean and de grease the barrell, fix any air leaks with PTFE tape and give it a good once over. Again this level of tech experience doesn't come on day 1. See 1a
3) Your scope is more important than your gun, buy a cheap chinese one and its going to be poor, don't zero it properly at the range you want to be most effective at and its going to be poor. Most scopes sub £50 are going to be bad out of the box. look for branded scopes. Hawke would be my budget recommendation, SMK if you really are on a tight budget. AND FOR GOD SAKE CLAMP IT DOWN!
4) You need heavy BBs, .2 wont cut it, no one can tell you what is the best weight as its purely personal, but any lower than .3 is useless for ranged accuracy. see 1a
Heavier bbs are more expensive but you wont eat through them anywhere near as fast as you do in an aeg.
5) Don't expect the world, you cant hit that 200m man hiding behind the log, its a BB gun, realise its limits. Learn to calculate range, I bet your perception of 60 meters is a lot different to my perception of 60 meters, amd we are probably both still way out. see 1a
The majority of Snipers who give up fall foul to the majority of these rules, if you correct them all I can guarantee any cheap bolt action rifle will at least match an AEG in terms of accuracy and range, The hardest one to get right is Number 1, and the most important is 1a.
I have used an MB06, (ASG Urban Sniper to be precise) and I was very impressed, they lad bought it new and it was his first day skirmishing it, the scope was the wrong way round, not clamped down and he was using bulldog .2 bbs. he hit nothing in the first 2 hours before having a hissy fit.
We swapped guns, after I cleaned grease out of the barrel with bog roll, put the scope on properly and zerod it, and loaded up with .28 bastards, I was able to get some nice kills with it out to 50 (ish) meters on a small site. Its a good gun if you put in the effort. imho you cant spend £110 on an aeg and get the same performance.