Pretend l edited post #2 down to a quote , to the effect of ' only .22 lr to shoot all day ' .
I get your point , largely in congruence with * my * point . But the expansion into ( what's comfortable to shoot a whole buncha rounds in a day / session ) is a jump sideways , with still another set parameters and tradeoffs .
Standard pressure .38 Spl from medium frame or larger revolver is absolutely fun to shoot all day . Most people's trigger finger will get tired , before they notice recoil .
Standard pressure 9x19 , from a full size gun , is fun to shoot all day .
Mainstream mfg .44 Spl ammo ( or equivalent home loads ) from most any .44 mag revolver , subjectively feels like shooting .22 Shorts .
( And several more examples )
The difference , is the guns don't weigh Pound or less , or hide in a pair of speedos .