I'm aware that DM and sniper are two very different rolls. I do play both rolls namely DM when traveling with a squad, or sniper when it's just me and my spotter. I do carry a pistol as well.
When I'm acting as sniper I usually take about 20-30 shots in a day with about 14 and up kills.
When I'm acting as DM I usually take about 100 shots a about the same amount of kills.
And I am prepared to loose the rate of fire with a bolt action (i used a friend's bolt action a year back and did notice a change in playing style)
Thanks for your imput