I'm gonna have to check out a choke for my old {from the early 60s} Remington bolt action 22.
I've been shooting chippies for years using # 12 shot, but the range is iffy at 20-25 feet.
Anything closer is an absolute kill but those critters are quick and skittish.
When I get over run by chippies I use "The Bucket of Death".
It's a 5 gallon bucket, half filled with water covered with sunflower seeds and a 3' board covered with the seed leading up to the edge of the bucket.
Nature and chippy greed take over, and they jump into "The Bucket of Death".
The most I've ever had to pull out when I "drain the bucket" is eight dead chippies, and that was in a 24 hour period from when I set up the bucket.
We were overrun in Suburban Virginia a few years ago. We cannot use firearms here, but the bucket of death is great! We caught about a dozen in 1 day. Luckily we only had to use the bucket one summer. The current population is manageable and the cat loves to hunt chippies!
Please,
What’s a ‘chippie?’