Using low aim assist snipers is good for practice, if you get used to that amount of aim assist, when you switch to your primary sniper with a much higher aim assist it makes it much easier to hit head shots
From the looks of it you seem to be a primarily shotgun user who is frustrated with the recent shotgun nerd and sniper buff and is constantly being out gunned and out played
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1st of I never asked for a shotgun buff, I think they are fine where they are now but unlike you I realize that if you nerf shotguns then people will just snipe, snipers need to be equally nerfed. As shotguns/ fusion rifles are and primary weapons should be buffed because PLAYERS SHOULD USE THEIR PRIMARIES regardless of whether they are sniping or shotgunning, it's called BALANCE. But I don't expect some kid like you with very little PvP knowledge to comprehend that