Controlling muzzle jump at the bench.

[iron cat]

Again, not calling you a flincher, but its funny the lengths SOME will go to explain odd groups, before even beginning to think about this...

My father held the highest level for coaching, he coached club level shooters as well as some of Canada's best Olympic team shooters.
One time while attending one of our BP club shoots ( first time with a muzzle loader )one of the guys remarked at how steady he was with no flinch after a misfire
" everybody flinches , including me- I'm just good at covering it up! LOL"
Cat

 

[track]

When shooting standard cartridges, flinching is almost nonexistent. However, with my double rifle 9.3x74R, the 300 Weatherby and 300 H&H, I flinch. I gifted those rifles to my son, currently only shooting the 30-06 and it's family members, with the exception of my 7mm Remington Magnum.

Definitely not enjoyable shooting those big kickers, especially the 300 Wby. A handload of 85.5 grains of IMR-7828 behind a 180 grain bullet is not pleasant.

 

[DGY]

The best way and really the only way to see if you are flinching is to have someone film you but not telling you when they will do so. First shot you might be focus and no flinching but a few shots down the pipe and you might be flinching especially with a light rifle in a substantial chambering(30-06 and up?) or a rifle with less than ideal trigger pull or a rifle you know hurt you in the pass, hard or no recoil pad, stock design that hit you in the cheekbone, scope kissing your eyebrows…