Highwild Shooting Foam Rest X-Block Bench Rest with Base

This is a pretty good article about it https://shootlikeagirl.com/brass-and-the-accurateshot-by-todd-butler/ Also, when you're sighting in, it's best to do it with some kind of support. I use one of these. It's cheap, lightweight, and unless you're doing long range bench rest competition, fully adequate https://www.amazon.com/dp/B07MH4529V