If your rings have Allen screws, the right size wrench, If screws ,make sure you have a good screwdriver the proper size as you're going to want thing good and tight.
Do you know The make & style of rings. Are there bases on your rifle? If you're getting another scope, post details as some scopes require higher rings..
There are so many good scopes out there.Leupold seems to be preferred choice. Personaly I like Bushnell
You should buy the best scope you can afford. Variable power scopes like 3-9 covers the whole range of shooting conditions you will/could encounter. others prefer a fixed power such as 4 X.
I guess the question is, what price range are you comfortably with and what currency , US, Canadian ,etc.
There are literally hundreds of scopes from dozens of manufacturers that will work for you. The determining facors will be what you want/need and how much you want to spend. You can get something that will suit your needs for anywhere between $200 and $2000.
However, optics, whether we are talking about scopes or binoculars, are something you should buy the best you can afford.
There is lots of junk out there as well, so some of the cheap "good deals" are not such a good deal.
Do yourself a favor and go to a big store with lots of selection and check out the different makes. Look through the different scopes and compare the clarity of the optics, features and prices, then decide what suits your needs and budget.
Wild boars are like many other (male) wild animals in that they will tangle over the affections of the fairer sex. Nature has however given them some additional padding over the fairer sex to prevent them from tearing each other to shreds. This bony cartiledge is most commonly referred to as the boar's shield. This armor helps prevent the tusks of mature males from penetrating into the vitals of their rivals (usually). I'd heard of such a thing before going on my first wild...