When I started shooting tactical matches many years ago, I was one of the few running a gas gun which was a GAP 308, very accurate when I did my part. Trigger control and follow thru are the two biggest things you need to focus on behind a gas gun to keep it shooting straight. What I found was there were so many things to focus on learning about such as trajectory and reading the wind, not to mention the stress of competition, the gas gun was not the best choice for my skill level at the time. Soon after realizing this, I switched to a custom bolt gun, my results improved as well as my learning curve. I wouldnt say you can be lazy behind a bolt gun, but they are more forgiving and seem to be effected less by minor changes in shooter input.
Now that I have learned a fair amount about the sport (still learning every day), I can do much better with a gas gun and make fewer mistakes. I still pick the bolt gun over the gasser for matches, but there always seem to be a few stages were the semi dominates.
BTW, welcome to the Hide
Kirk R