Bingo. Yankee nailed it. Except for that "squeeze" part. I would describe it as a "gentle press" - ideally,
straight back.
I don't break the shot unless I see something like the large picture you posted.
. . well, that is not true. Sometimes I do. But that is when the bullet impacts somewhere except where I wanted it to.
David, you were shooting one inch or less at 200 yards yesterday pretty consistently. I saw you doing it. Ask yourself what
in your technique is different. Do you use ANY muscle tension to get a cheek weld, or keep the rifle on target? Is your cheek weld solid and consistent? Trigger press straight back and gentle? If the answer is "nothing is different",
then look to your equipment.
Are you shooting match grade ammunition? "Standard" NATO ammo is specified to shoot 3 inches at 100 yards. Extrapolating that to six inches - if you are lucky - at 200 yards, is realistic in my opinion.
That is not to say it can not be better. But that is the NATO specification, so "precision" has a very different meaning for a soldier, and a benchrest (or tactical) shooter.