One of my college degrees was criminal justice and I took a class called "the history, use, and maintenance of the firearm". Learned all about SAO, DAO, DA/SA, rim fires, centerfire, clip magazines, double taps, center mass, shot placement in tear duct section of eye socket being softest part of skull structure, entry and exit wounds, low light shooting, drawing holstered weapon with weak arm under scenario of strong hand being injured etc.
I have shot MP5, M1 garand, M1 carbine, ar-15, ar-10, ak-47, berettas, glocks, hk pistols, springfield 1911s, xd 40, saiga 12gauge, revolvers, sigs, etc.
By no means am I an expert but I love to shoot at every chance I can get at the range. I enjoy shooting different guns and learning each one operates differently. Can never learn enough. I have not had to rent a gun yet but many ranges offer rentals but not all ranges allow you to fire all of the above guns.
I carry a SIg P220 and realize many variables can happen with a semi automatic pistol that can play a factor between life and death. I carry with one in the pipe using the decocker to bring the hammer down. I never carry with hammer pulled back and gun charged. I am not comfortable with that and I carry with what I'm comfortable with. Carrying a semi auto without a round in the chamber was never my preference. Takes added seconds to draw from holster rack the slide and point and shoot. Can have feed problem or misfire. Stress can induce panic when actualy encountered wit stressful situation which may impede ability to perform when needed. So I eliminate what variables which may play into account.
I think the revolver has proven itself time after time. Although has less round capacity, does someone need more than six rounds if a situation arises. Even with multiple perps one would hope he or she could eliminate the threat or evade the situation. Revolver is simple as point, pull trigger. After practicing at range one can become pretty proficient with discharging all his or her rounds from the cylinder of a revolvers, open the cylinder, push the ejector rod to extract spent shells,, reload with speed loader, and draw on target in fluid movement.
I have contemplated on getting a revolver to carry for CCW instead of my P220 or a G30.
You may be proficient with a .45 but the same might not apply to your wife. Shot placement and accountability for a spent round can haunt with a you . Once that round leaves the barrel ther is no turning back.
For home protection I am of the opinion that a pump shotgun is my number one go to gun. Everyone knows the distinct sound of a shell being racked and does wonders in close quarters.
Just food for thought. Tytped on cellphone and apologize for mistypes.