Wishing you better luck with yours than mine. Great cartridge but mine won't do better than 1 MOA (5 shots).
As for a scope, you want quality. Most folks go for high Xs and don't spend enough. I've tried several scopes on mine and currently running a 6.5-20x40 Nikon that is 10 years old. It's a bright clear scope with excellent resolution. Here's one on Ebay (not mine) https://www.ebay.com/itm/Nikon-6-5-...7c9c:g:8dMAAOSwoZlcFxf4&LH_ItemCondition=3000