Just curious when they are side by side, how much bulkier does the 45c feel?

Define "bulky".



It is a little bit bigger and maybe a smidge heavier loaded but it's not by much in either regard.

The 45c is only about 1/4" longer in grip and about 1/2" longer in slide but they're both about the same in overall width and grip feel.



I have fairly thin fingers and can actually fit my whole hand on both pistols (with flat baseplates) but it's a little easier with the .45.

Typically, the .45 autos have always felt a bit larger than similarly sized weapons.  Just was curious if the 45c was close or not even in the same ballpark.