CZ 457 benchrest scope setup question

[johnrose]

Newbie benchrest shooter, so totally clueless here. I've been going to informal matches once a month as the weirdo using a Henry Golden Boy (and having fun) but am looking to now purchase a more realistic firearm for benchrest shooting, and have settled on the CZ 457 Varmint MTR.

I am seeing a lot of mentions about using the 419 rail for mounting a scope. Why do you need the additional rail if the receiver already has the 11mm dovetails? Additional points for explaining what the 15/30/50 MOA differences are, I'm not understanding what the difference is between them. Mainly shooting at 50 yards, with occasional pushing out to 100 yards.

slope game​

Thanks!

 

[linekin]

The reason for the different moa rails is additional elevation for extended yardages. That, & some like to have the erector tube more centered in the scope.
Also probably thought as more robust that the factory dovetails + many already have a stash of rings on hand.
For your intentions the factory dovetails should be fine.

 

[glp]

If you are shooting primarily at 50 yards, or even 100 yds, you don't need a rail where the rear is higher than the front.

 

[linda789]

Newbie benchrest shooter, so totally clueless here. I've been going to informal matches once a month as the weirdo using a Henry Golden Boy (and having fun) but am looking to now purchase a more realistic firearm for benchrest shooting, and have settled on the CZ 457 Varmint MTR.

I am seeing a lot of mentions about using the 419 rail for mounting a scope. Why do you need the additional rail if the receiver already has the 11mm dovetails? Additional points for explaining what the 15/30/50 MOA differences are, I'm not understanding what the difference is between them. Mainly shooting at 50 yards, with occasional pushing out to 100 yards.

slope game​

Thanks!

If you regularly shoot at longer ranges (100 yards), I suggest 30 or 50 MOA can be useful for quick and efficient adjustments.

 

[Rfish]

Advantage of the rail is it opens up your mounting options significantly. For Benchrest 50yd / 100yd you really don’t need the Moa offset but if you decide to other ranges it would be helpful. For Benchrest the 419 rail is a little tall and may require very short rings to get you down close to the barrel for a good cheek weld dependent on scope / personal preference. If strictly Benchrest, not as much of a concern. DIP also offers several rails that are a little lower profile.