I've yet to shoot any REALLY big boomers.
I have done a LOT of bench time with my 8.5 lb .375 Wby. I have done SOME bench time with one each a .416 Rem and a Rigby. I ran about a box and a half through a .458 Win one afternoon pretty quickly. But the absolute most uncomfortable thing I ever benched is a toss-up between a Browning BPS 10 ga. with 2 1/4 oz. turkey loads and a '95 Winchester four-hunnert-five with a steel buttplate. YOWZER !!
