Rifle Scopes Vortex HD gen II 4.5-27 question

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Aggrofish

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Nov 18, 2013
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#1
I have a gen II Razor 4.5-27 in route. I'm putting it on a Ruger RPR in 6.5CM. I currently have a Burris XTR II 5-25 with Burris signature rings with the inserts. I'm in the market for rings and the obvious answer is Vortex/Seekins 1.45 but I dont know if they'll clear scope caps with a 56mm objective. Anyone know?

Also I'm not a hold type guy and even though I've only had the the rifle out to 1400 I want enough up elevation to be able to go to a mile which is around 21 MRAD. In the previous scope I had a 20 MOA base and 30MOA in the rings. The Burris rings are weird though and not quite 30 MOA, but point is all but 2.5 mils was up. Anyone know about how many MRAd up a guy would have with a 20 MOA base and a 100 yard zero on a 6.5CM?

I think the answer might be to get a 40MOA base and standard rings if they're high enough.
 
#2
20 MOA is 6 mils’ish. I don’t think you need 40 MOA personally. 20 is more than adequate. As long as you don’t have a full top rail on your RPR the 1.5” rings will be fine with a 56mm objective (I think). I have a full rail and a 50mm objective on mine with room to spare and scope caps
 
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#4
930A9247-ED8F-40A7-90B6-19E693F93B92.jpeg


These are badger 1.5” rings and a 50mm obj. There might be enough room for a 56mm plus my caps but it would be close
 
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#5
I have a Tikka T3X TAC A1 which has a full rail out front and I have the Razor Gen II. I used the Seekins 1.45" rings and there was just enough clearance for the Vortex Defender scope caps.
Note the rail on the Tikka is 0 moa so if there were any tilt like on a 20moa pic rail you might not have enough clearance for the scope caps.
Zero'd at 100 yards for a 6.5CM I had about 16 mrad of elevation adjustment using the turrets only. Of course you have more on the reticle but sounds like you don't want to go there.
 
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#6
This was a total of 1.6” with that setup on factory 20 moa rail and had 19.5 mil of adjustment left in turret. Maybe tomorrow if I remember I can mock it back up and get out the mics and see how much room there was to play with.
 

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#11
Cant go wrong with the 1.45 but one thing: do you have the first or second generation rpr?
The first had a samson handguard that was level the whole way which required the 1.45".
The recent generations drop down a bit which allows you to get away with slightly lower rings but you might bottom out the cheek adjustment though before you can get low enough to look through the scope.
My cousin went with 1.45 and though he has a good bit of room between the scope and rail he is glad he went higher as hes bottomed out on his cheek adjustment.
 
#12
I have a gen 1 with the stock sampson rail. I'm going to try a set of 1.5" Burris Signature rings that I have and see how much room is left.

spife7980 said:
Cant go wrong with the 1.45 but one thing: do you have the first or second generation rpr?
The first had a samson handguard that was level the whole way which required the 1.45".
The recent generations drop down a bit which allows you to get away with slightly lower rings but you might bottom out the cheek adjustment though before you can get low enough to look through the scope.
My cousin went with 1.45 and though he has a good bit of room between the scope and rail he is glad he went higher as hes bottomed out on his cheek adjustment.
Click to expand...
 
#15
Invest in some Tenebraex caps. Lower profile than the factory storm caps, and you should be able to run with low pro rings.

Also, much better in inclement weather. Shot at a match with my vortex caps and it was raining/snowing, and those things were worthless as they kept sliding off when pressure applied vs opening up. Buy once cry once.
 
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#16
Thanks I'll check them out.

tenringx said:
Invest in some Tenebraex caps. Lower profile than the factory storm caps, and you should be able to run with low pro rings.

Also, much better in inclement weather. Shot at a match with my vortex caps and it was raining/snowing, and those things were worthless as they kept sliding off when pressure applied vs opening up. Buy once cry once.
Click to expand...
 
#17
Here's my Vortex Razor HD Gen2 4.5-27x56, with AADMOUNT caps, on a Spuhr SP-4603B mount on a Tikka T3x Tac A1: Rail is 0MOA, mount is 38mm (1.496") high with 6mil (20.6MOA) of rake.

The AADMOUNT cap clears the rail by 1.9mm (0.075") -- 6 playing cards (0.0690") will fit in the gap, 7 cards (0.0805") won't.

scope_clearance.jpg
 
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#19
Aggrofish said:
I doubt 1.45 which seems to be standard ring height will work with a 20 MOA base and caps.
Click to expand...
It'll be very close. If your front ring is at the same location on the scope tube as mine, but the center of your ring is 0.046" lower and your rake is 20MOA vs my 20.6MOA, you'll end up with 0.030" (0.76mm) clearance between the rail and a cap like mine. Thirty thousandths of an inch might be enough to absorb the manufacturing tolerances in the scope, cap, rings, and rail... But if I were you I'd be looking for taller rings or a thinner cap.
 
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#20
I'm not seeing any 34mm rings higher than 1.45 outside of the Burris signature whatever they are that I'm using now. They're 1.5. I have 30MOA in the rings from the inserts in addition to the 20 MOA base. What can I say I want all up elevation lol
 
#26
Here's another mounting option: https://www.jprifles.com/buy.php?item=JPFTSM-34-20
That is a JP one-piece mount with 20 moa built-in, and 1.47 to centerline. I got mine used with my 4.5-27 razor gen2. I have been happy so far, and can't imagine having any problems with anything moving. The quality seems to be top notch, but the price is $185 less than the comparable Spuhr.
 
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