If that 300 magnum got you into a fix the big bore handgun ain't gonna get you out , lest you save 1 round for yourself.
Now with that said go with the 45colt in a Ruger. you can load it up to give a 250 gr bullet 1300 fps with no problem. 300 grs can come close to that. My everyday favorite load is 9 grs. unique and a 250 gr.cast swc. gives close to 1000fps ,easy to shoot and accurate as well.
