How raised and mentored if you will.
Later Mr H would share along the same lines.
-Get a piece of typing paper and fold in half, then fold again.
-Five yards and only five rounds.
-At the start/buzzer shoot as quickly and effectively as you can with whatever gun or loads.
The paper will not lie.
It will reveal what YOU shoot best and with what caliber and loadings- at that time.
Meaning, as one ages, or goes through injury, sickness, injury, whatever one can and will change what they shoot best.
This is how I was raised and mentored, and in assisting shooters me and mine had a variety of guns, revolvers and semi auto's in various platforms, actions, calibers, and loadings.
This is how WE and the student learned what gun and loads was best for them, especially for CCW.
At the time, we had a slew of holsters for folks to "try before they buy" as well.
Remember, your buddies, and nowadays your Internet buddies are not likely to be at YOUR gunfight.
Only you, and one is advised to be one with the gun they choose and know it like a body part.
Steve