Yeah, I was there too. I sweated it at 100 yards way too much. Slowly, I realized from shooting matches, that a "1 moa" gun was enough to put steel on target if I could build a position. I could get .5 to .75 5 shot groups and targets were 2 and 3 moa. That's when I realized "the scoreboard" is all that matters.
I was also drawing tags and hunting more, so, I started taking hikes and shooting rocks. Now, at the range, I zero at 100 and get velocity. After that, all my shooting is at distance in practical positions. Its nice to just plop down and shoot steel and not overanalyze stuff.
Ultimately, I started to realize that groups at 100 only tell part of the story and my performance at distance was not a direct reflection of my 100 yard groups... I can't quantify it, but there is something that happens and groups can shrink at long range if we get out of our way and let our "reflexes" shoot.
One way I think about it is hitting a baseball/softball, there isn't a whole lot of "thinking" in the process. Our mind processes so much for timing, bat speed, bat angle, etc. as a natural function. Pressing the trigger is like that.
Slumps happen when "we get into our heads" and think about stuff too much. That's the mental aspect. I do a little visualization/breathing/meditation/mind clearing before shooting.
