When I was at SDVT-2, Special Warfare Gru 2 had a rifle and pistol team. 4 of the 6 guys were not SEALs. There were 2 divers (myself included), 2 techs (what we call non-diver/SEAL types that are stationed at the teams, shoe just wasn't acceptable to them for some reason), and 2 SEALs (1 of which was an alternate/spotter). The best shooter on the team was a tech. SEAL does not equal great shot, they just get to shoot a lot so they are well trained.
BTW- NO sniper qualed guys were on the team. Why? Because all shooting, including the 500yd line, was done open sites with no bi-pod. Those comps were a BLAST!