I would never try to fire the 416 prone. Always shot it standing/leaning-most were reduced loads too. First ever shot out of it was a 400 grainer-that was robust-wouldn't want to fire too many out of that just for shits and giggles.
Fired a 12g sxs Baikal when was only 12-13. First time with a shotty and it was max reloads. That kicked a bit.
Everything else I wouldn't ever say worried me enough to suggest I wouldn't do it again.
Easter bunny hunt down Alexandra with the last year I used the browning A5 before I moved. Used the Mossberg 500 for the spotlighting night stuff. No more than 250 rounds probably 1-1/4. The browning isn't the most recoil absorbing shotgun and it was a warm day so only one layer-maybe only a t shirt. The Mossberg is surprisingly soft-it has been ported and had a pistolgrip so probably why.
First time I recall getting a bruise from a shotgun and the right cheek was a little ginger but didn't stop me at all the next day-wasn't that bad.
Even some of the 303's that were meant to boot only did so because we were young and soft. Fired my league coach's 303 once. The fore-end was carved back that much it looked like an old English shotgun splinter job. Had some old tape wrapped around the barrel to hold it on, long barrel too. Thought it would kick like a mule, it didn't really, just had a lot of muzzle flip/rise, but not even bad enough to hurt the cheek.
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