For your purposes, any of the listed die sets would work well, as long as they are in good condition and you use them as directed. The Redding dies are top quality for competition shooting and usually very expensive. They are not necessary for your Krag but would be fine if you could get them cheap.

The dies usually aren't the problem, though. Make sure your Krag is in good condition, cleaned well and shoots well. The bore doesn't have to be perfect for your Krag to shoot well. Choice of components will have a lot to do with how you enjoy your Krag, also.

Read through the posts and you'll find all you need. When you get into it a little more, keep us informed and let us know how it all works out. Reloading is fun and will save you a lot per round but you'll wind up shooting more and costing you more in the long run while enjoying your Krag to the fullest.