I love the Burris targets. Hands down the nicest grid targets on the market. They have lots of targets on one sheet. I also use the 1" orange dots during load development.
https://www.midwayusa.com/product/71...-12-pack-of-10

Midway has them on sale regularly for less than $2.00 a pack. I usually buy 10 packs at a time when on sale.