Philip
Was your pistol jamming on just JHP ammo, or was it also jamming on FMJ ammo, and can you describe the jam? Also, if it is just JHP ammo, which brands of ammo, and is your pistol new, or have you shot it a lot?
You mentioned that your pistol hesitates on feeding, is that with every round or just when the magazine is full? As Sam pointed out small .45s can be tempermental, even more tempermental than a full size since the slide travel is reduced. So the more information you can give us, the more we will be able to help you.
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Str8_Shot
The best handgun for self defense, is the one you have with you.