I used Tally CZ high rings on my 455 and they worked great.
Burris rimfire highs gives you tons of clearance, mount virtually any scope. They are a drastic step up from the mediums which I do not think would be suitable for anything above a 9x40. They really should make something inbetween medium and high.
Here is a link to some comprehensive information about your inquiry, RFC is your friendhttp://www.rimfirecentral.com/forums/showthread.php?t=336921
I used Tally CZ high rings on my 455 and they worked great.
I think these rings pictured are too high