Burris Signature Series XTR Rings
In the tradition of Burris’ excellent Signature Series rings come the XTR line. They’re designed for tactical applications and built tough and you can tell right out of the box. The Pos-Align inserts that users of the Burris Signature Series Zee rings are used to are there but no longer made of the slick polymer used in their 1″ and 30mm Zee rings. Instead the inserts appear to be a fibre reinforced polymer of much duller sheen. Possibly meant to provide greater friction against the scope tubes of the giant scopes normally mounted in 34mm tactical rings.
They’re packaged in a water tight case reminiscent of those from Pelican that’s made by Plano. It’s a hell of a lot of case for a set of rings that are more or less impervious to water in the first place but whatever makes the little cars go round and round right. If nothing else it provided me with a neat little case to keep all the tools and parts for my optics in my normal match kit.
A cross bar lug machined into the bottom and made to slot into a Picatinny rail and six screws holding down top halves mean your scope won’t be shifting in the rings and the rings won’t be shifting in your mounting base.
These rings are designed for use with bases having a Picatinny slot size. That’s necessary to accommodate the lug. I haven’t tried to fit it in a conventional Weaver base and I’m not going to either. The fibre reinforced ring inserts being clamped down by 6 torx head screws means even the largest and heaviest scopes will be very securely set against the forces of recoil. My rings are hugging a US Optics ER-25 which is one of the heaviest tactical scopes you could possibly find to hang on a rifle so I’m glad for the holding power. The inserts also help prevent damage to the scope finish or pinching of the tube but this by no means is meant to assert that extreme care should not be taken while mounting the scope in the rings. You have to do it evenly and consistently and be careful to not over-tighten them.
Thick and tall, thick and tall. I went with a taller ring than I should have which means either replacing them with a shorter set of raising the comb on my rifle. Guess which one won out in the short term. Hey, at over a c-note a set, it’s non-trivial to keep lashing out greenies. That is what will happen though in the end. The ring caps are pretty thick on their own though and on my ER-25 with it’s relatively short back half of the main tube and super low profile EREK elevation knob means that I can’t see squat of my knob settings (elevation or windage) without having to come slightly off the rifle. It does break up my position which means I have to rebuild the position. It’s right here where MTC and a proper zero stop on the ER-25 would be good. With something like a Vortex Razor with taller knobs the thickness of the ring shouldn’t matter as much. They’re also kinda heavy for aluminum. I didn’t toss them on a scale but they’re certainly not light other than perhaps being light for their size if you’re familiar with the weight of steel rings.
Each ring set includes one set of the +/- 0 MOA concentric, one set each of the +/-5 MOA and +/-10 MOA, and two sets of the +/-20 MOA. With these inserts, it is possible to make 0, 5, 10, 15, 20, 25, 30 or 40 MOA of cant in the scope mount without a canted base. This means 2-piece bases are a possibility which can allow lower mounting of the scope relative to the bore but they’d have to have Picatinny slot size to work. All of the 2-piece slot-type bases I’ve seen are on the similar but very slightly different Weaver pattern which has slots that are too narrow to accommodate the recoil lugs on things meant for use with Mil-Std-1913 rails and mounts.
Cost is not heartwarming but not heart stopping unlike the cost of, say, US Optics rings. The Burris XTR Signature Series are over $100 on the street. Mine were $134 + shipping. I only use Burris Signature rings on my rifles for a reason. They’re top quality and they don’t mess up my scope finish which helps to retain value on my pricey optics. If you have room in your weight budget and you’re using any scope without an EREK knob then you’ll probably love them. Definitely get your scope in your hands with your rifle and base before ordering your rings and then measure 3x and order 1x.