I'm building an T/C Encore 6mmBr. On-Target-Technologies OTT is chambering a 25" Douglas XX barrel 1:10 twist with integral muzzle brake for the Encore. I already have a 30mm 8x32x56 Nightforce BR-scope waiting to be mounted on the Douglas when OTT ships it to me in a couple months. I'd like to use Maxima Rings but don't know which height to use. Can someone tell me if the Hi,.525) will work or do I have to use the Ultra-Hi,.850)" Maxima rings? Thanks.