The blue box Federal Powershok 150 grain shot well in my rifle (I can't reload for any better accuracy) despite not always looking great and they killed all the sika and the very few reds I shot with them. They were about the least expensive rounds I could get a reasonable supply of as well.
My advice is to focus on what you can get a reliable supply of, especially in NI right at the end of the supply chain. There is nothing more annoying than getting the rifle zeroed with one type of ammo and running out only to have to put up with a lot of teeth sucking from the dealer as he tells you how hard they are to get and then tries to sell you something different. You'll read a lot of stuff on the internet about this magic bullet, or the other magic bullet, but the best bullet of all is the one you have, and the one you can easily buy more of.