What ring height for 60moa base?

[photog_shooter]

Given my remote location, I don't have the luxury of being able to just run down to the local gun store and test out rings. I'm hoping that someone here can help me out.

I've picked out my scope online and it has a 50mm objective. The rail on the rifle is 60moa and I'm looking at the 45moa Accuracy Int'l scope mounts. The mounts come in 36.5, 44.2 and 48mm heights. Hoping for the lowest mount possible.

 

[Blastattack]

Just... why? Are you shooting 2500 yards with a 1000 yard zero?

 

[Blastattack]

As far as mount heights go, it's not rocket science. Measure the outside diameter of your objective and divide that by two. That's the highest set of rings that you'll need. I highly doubt that the OD is greater than 73mm, so the 36.5 mm rings should work just fine.

 

[propliner]

As far as mount heights go, it's not rocket science. Measure the outside diameter of your objective and divide that by two. That's the highest set of rings that you'll need. I highly doubt that the OD is greater than 73mm, so the 36.5 mm rings should work just fine.

Remember that a 60moa setup will tilt the scope down at least 5-7mm at the front depending on length of scope and sunshade.

With a Nightforce that has 120moa of adjustment in a 60moa mount/rail, you should technically be able to zero at 100 and dial up to 2000 or so, depending on trajectory. I've done it.

Edit: Wait, are we talking 105moa of total tilt here? That combo doesn't make much sense. Can you explain why you'd need so much angle?

 

[BigRobb]

How long is your barrel? It'll be in full view with that much moa and the scope sitting right on top of it. (Maybe a bit of an exaggeration, but something to think about)

 

[photog_shooter]

Just... why? Are you shooting 2500 yards with a 1000 yard zero?

Actually, yes I am

Remember that a 60moa setup will tilt the scope down at least 5-7mm at the front depending on length of scope and sunshade.

With a Nightforce that has 120moa of adjustment in a 60moa mount/rail, you should technically be able to zero at 100 and dial up to 2000 or so, depending on trajectory. I've done it.

Edit: Wait, are we talking 105moa of total tilt here? That combo doesn't make much sense. Can you explain why you'd need so much angle?

It's for a Cadex Shadow in 408 Cheytac. The round is capable of 4000+ yard shots, so the rifle itself comes with a 60moa rail built-in. I asked Cadex about rings and they suggested that I get rings with as much moa built into them as possible, and the 45 moa ones are the most that I could find.

I checked a few different ballistic calculators and they all basically said that with a 500 yard zero (a 1000 yard one didn't make much difference), that I'd need nearly 400 moa to get a 4000 yard shot. Even at 3000 yards, the required moa is still pretty ridiculous. I know that having a 105 moa scope mount seems pretty extreme, but I guess that's the nature of the game.

How long is your barrel? It'll be in full view with that much moa and the scope sitting right on top of it. (Maybe a bit of an exaggeration, but something to think about)

Yea I was thinking about that, hopefully it won't be an issue, although I think that it might be... The barrel is 32" long, and the muzzle brake adds about another 4" or so.