Rifle Scopes MOA rail + MOA mount=

[Proarc]

My Surgeon action has a 20 MOA rail and I have a Spur 20.5 MOA mount. With my present scope sighted in I have 6.5 mils from my 100 yd zero to the bottom of scope travel.
If I take this setup to another rifle that has a 30 MOA rail, will I be able to reach a 100yd zero?

I dont want to be at the max lower scope travel and still be 3-4 inches high at 100yds.

Thanks

 

[TiroFijo]

Re: MOA rail + MOA mount=

If you still have 6.5 mils for elevation adjustment this is about 22.3 MOA, so you would have about 12.3 MOA in the other rifle, IF both are identical in their machined bases.

 

[Proarc]

Re: MOA rail + MOA mount=

Thanks

Any way to tell if zeroed how much travel I would have to the bottom of scope travel? Trying to figure how far from max bottom point to where my 100yd zero is. I think I need a mount with less moa built in. Gun is at the gunsmiths and trying to figure out if I need to get a different mount on order.

 

[TiroFijo]

Re: MOA rail + MOA mount=

If both rifles shoot the same load, and the first had 6.5 mils left when zeroed, the other with the 30 MOA rail (in a perfect world) should have about 12.3 MOA left when zeroed at the same distance.

 

[Opticsspecialist]

Re: MOA rail + MOA mount=

typically you can't use a mount with moa built in and a 20 moa or more base, geometrically it doesn't work, at least thats been the case with a nightforce 20 moa unimount on a rifle with a 20 moa base. could be different with your setup,

 

[Proarc]

Re: MOA rail + MOA mount=

Thanks for the reply's, Just ordered a new 0 MOA spur mount to fix this.