I just finished at 9 hour, 1300 mile trip a couple of weeks ago. I did it in 2 stops, and I was still completely worn out at the end of the day. It may be better in a P337, at least the ones that I've been in, because they are typically quieter. But, still, that was a LONG day.
FWIW
Notwithstanding, it would still be very cool to do.
Keven
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Anal fucking