go buy a gas auto and your good to go....
It is a sad thing, but, this would be my suggestion also.
Up until a few years ago, I used to see an older gent (mid 90s in age) who would take a short walk down a snowmobile trail with his .410 single shot. He made no bones about the fact he shot his grouse on the ground, and didn't even try to shoot them flying anymore. He lived in an old folks home, and had to fight like hell to keep his single shot, and, his old pickup. He sold all the other guns after his wife and most of his kids had died.
He could walk in perhaps 1/2 mile and out the same distance. It impressed me, and made me sad at the same time.
Best,
Ted