I've had one, nay two guns I was "accurate" with. Wait, 3. My Chipmunk .22 Pre-Puberty, my 03-A3 aught six,(post Puberty Deer gun) and Dad's BRNO VZ-24 .35 Whelen, Ackley improved.
ANYTHING else, mine, yours smokeless, smokey, doesn't matter, IF I can chase a can, I'm whirl like a dervish ecstatic. (10/.22, CZ-52, any of the 58's, yup, even the target sighted model, not to be confused with the four figure target model, 1911, SR9-c, AR, quasi okay with my buddies FAL, but not great, Springfield XD... FINALLY past the flinch I acquired at 15, but... nowhere near my father's levels, who was sniper accurate)
My stance is somewhere between the Duelist and the Bisley, probably closer to the Duelist arm posture, and the Bisley "stance" posture.
One day (been threatening this for years) I'm going to go the range, and fix that. But as ammo steadily increases in price, and I work more and more hours to keep the rent paid and the lights, on, it remains an empty threat.