Posted: 6/16/2017 5:27:37 PM EDT
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Well here I am trying different calculators and options for rings but none of them seem to make perfect sense. Too subjective.
I basically have a R700 footprint. 20 MOA base. Shilen #5 light varmint contour. Need 34mm rings. Scope objective OD is 2.6", plus 4-6mm for lens caps. So say 70-72mm OD total. Do you think 1.125" rings would work. Or 1.375" at least? |
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Quoted:
Well here I am trying different calculators and options for rings but none of them seem to make perfect sense. Too subjective. I basically have a R700 footprint. 20 MOA base. Shilen #5 light varmint contour. Need 34mm rings. Scope objective OD is 2.6", plus 4-6mm for lens caps. So say 70-72mm OD total. Do you think 1.125" rings would work. Or 1.375" at least? No need for that high. You should be fine with 1" height. I run 1" height on my Razor II 56mm objective with Vortex caps and have plenty of room with a M24/40 contour barrel. Below is an old pic with the AADland caps but the Defenders work too. If the two heights above are your only choices then go with the 1.1". 
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Quoted:
Well here I am trying different calculators and options for rings but none of them seem to make perfect sense. Too subjective. I basically have a R700 footprint. 20 MOA base. Shilen #5 light varmint contour. Need 34mm rings. Scope objective OD is 2.6", plus 4-6mm for lens caps. So say 70-72mm OD total. Do you think 1.125" rings would work. Or 1.375" at least? 
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Rob, you obviously have a 20 MOA base as well? Didn't think I could go lower than 1.125". My scope (Cronus) has almost identical dimensions as the Razor 4.5-27x56.
I put a straight edge on my 20 MOA base till it extended past the shank of my barrel and the contour started. At that point (where scope bell would position) it measured 1/2" (12.7mm) between top of base and barrel. My last precision rifle I setup was when I lived near a LGS that had every size ring option in stock. I've since moved and don't have that luxury now. Going to have to order online. Seekins, Badger, or NF. 20 points to the winner who helps pick the correct height 
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34 mm - 12 mm = 22 mm (minimum) to clear the barrel. 1 inch = 25.4 mm so @ 1" you should be good to go from a clearance point of view. What you find "comfortable" might be another matter...
Free advice (worth what you paid for it?!?!) on ring recommendation - Leupold Mark 4 rings - High = 1.1"... I like the steel version (link) but they are also available in aluminum. They're solidly built, reasonably priced ($142) and don't require loctite on the screws in the ring tops (according to Leupold). Also available in "Super High" @ 1.4". Good luck! Post pics & "the story" when you complete the build!
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Seekins 1" or if you wanted 1.1" then the Vortex rebranded Seekins will work. Both are excellent and smooth lined with no nut sticking out. I have been using them since around 2004 and they hold solid.
On the height, the 1.1 would be fine as long as your comb height isn't too low and might cause a sight picture issue. What stock are you using? |
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I found a better calculator and it confirms what y'all have said pretty much. looks like I'm going with 1.1" or 1.125". Was looking at either Nightforce 1.125 or Leupold MK4 1.1".
I've got an XLR chassis, so adjustability is not an issue. I like the chassis but I sometimes miss an A3 or A5 stock. |
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Quoted:
Seekins 1" or if you wanted 1.1" then the Vortex rebranded Seekins will work. Both are excellent and smooth lined with no nut sticking out. I have been using them since around 2004 and they hold solid. On the height, the 1.1 would be fine as long as your comb height isn't too low and might cause a sight picture issue. What stock are you using? What do you think, leave em or return for 1.00" and be Very close with Defender caps on? |