MVA 10x "A" scope

[Aviator]

The number 2 rear mount has .300 inch total travel. With 7.2 inch spacing, that gives a total range of 150 minutes of angle.

200 to 1000 yards is possible, but not a sure thing. You'll have to figure out how much range you need with your load.

[Kurt]

If you have your rifle setup with the correct blocks, what is the closest and the farthest distance you can shoot with that new MVA scope and the Unertl style mounts? Could you shoot as close as 200 yards and as far as 1000 yards?

Bob I have the A scope but I have their Silhouette mounts on 7.2" spacing. I don't have the Unertl standard or POSA mounts but I'm looking for a set. The Unertl front mount is lower than the MVA so you would gain some elevation.
I can give you a 100 and 200 yard setting for the 7.2 and that spacing is very critical, just a bump on the elevation will get you off the paper in a hurry. My 100 yds setting is 2 and the 200 is 7 for the .44-2.6 Rem. I'm hoping I can get it to Harris for some long range settings. Maybe by that time I will have the Unertl mounts for the A scope. also I will drill and tap the rifle for the 10.34" spacing.

[Michael Johnson]

It would seem to me that changing out different sized blocks would become hard on the screw threads after a while. Is this an issue? I have a rifle on order with block spacing at 7.2 and 17 inches. This is so that I can run a MVA A scope at 7.2 inch spacing and my old 28 inch MVA scope at 17 inch spacing (for Silhouette).

[Dennis Armistead]

It would seem to me that changing out different sized blocks would become hard on the screw threads after a while. Is this an issue? I have a rifle on order with block spacing at 7.2 and 17 inches. This is so that I can run a MVA A scope at 7.2 inch spacing and my old 28 inch MVA scope at 17 inch spacing (for Silhouette).

It's not hard on the threads as long as you don't over torque them. I tighten to around 15 inch pounds.
Dennis

[SSShooter]

MVA offers a set of blocks for the various elevations (if memory serves - 300yd & less, 500-600, 800, 900 & 1000) that do not require remove of the rear "base block", for lack of a better term. The various height riser blocks slide onto a dovetail cut on the base block and are held in place with a set screw. Requires one or two block changes for a BPCR match and one change for a mid-range match and one for each distance at a long-range match. Not a big deal to make the change between relays. However, I did forget to do so once, which made the next relay more exciting than it should have been.

[Clarence]

My .40-65, with a conventional GG bullet (Gunn modified, cut by Fred Leeth), requires ~48 MOA correction from 200m to 500m, probably ~62 MOA from 200y to 600y. With a Kidwell money bullet, the corrections are ~43 MOA and ~54 MOA, respectively.

IIRC, the MVA A/B mounts have ~0.200" vertical adjustment.

For a 7.2" block separation (0.002"/MOA), those changes are well within the adjustment capabilities of the MVA mounts used with either an A or B scope. One just needs to get the correct rear block. For 10.3-10.4" block separation (0.003"/MOA), 200-600 yd should be still doable, but it is possible that it might not work on either end with standard blocks. Obviously, you would need a different rear block to do 800-1000 yd.

I'm guessing that

The DZ mounts, with ~0.400" vertical adjustment, give much more flexibility, particularly with the longer spacings. With 17" separation, 200-600 yd. is no problem, with plenty of adjustment left on either end.

Clarence

[Old-Win]

Right now, I am using a Unertl 6X small game. I have a set of scope blocks that will get me from 300 to 850 yards and another rear block that will get me to a thousand yards. I'm hoping to find a combination that would get me from 200 to 1000 so I don't have to make the constant rear block changes. I'm like MJ, wondering whether or not I'll wear the threads out in my barrel with all the changes. One thing that is nice with 7.2 in centers, is that you can determine the height of the blocks needed to get to the certain ranges. Each .002" equals 1 MOA. Another question, do you see the front of the barrel when on a 30 inch rifle? If so, how high a blocks do you need to so you don't see the front of the barrel at a thousand yards?

Steve, Kurt. Missed you guys at our match last weekend, Steve I see you were busy in Friendship.
Good shooting. I heard Brent was running a lot of gas through his chainsaw from the storm that went through Iowa.

[Aviator]

I was sorry to miss Harris!
It's a bummer when you have to choose between matches!

With my DZ Arms scope, no block changes to go from 100 yards to 1000 yards (7.2 inch block spacing, 225 minute adjustment range).
The DZ Arms mounts can work on other scopes with 3/4 inch tubes. Not cheap, but they are nice.

[desert deuce]

Si compres barato, compres mas hace rato.

[Kurt]

Bob,
I thought Harris was in September.....
How much MOA does a Unertl have? if it has 200 moa elevation a .05 hight difference between the rear and front block should get you on the 1K. That is what my DZ scope has on the .45-90 and I have a few to spare. But the down fall on the DZ is the Pope rib is on top not on the bottom.

[Clarence]

IIRC, the original Unertl mounts have about 100 MOA (0.200" travel) of vertical travel. Might be a bit more, but not a lot.

Clarence

[powderburnt]

125 minutes of elevation for the unertl and fecker mounts. Not enough to do silhouette and long range but plenty for silhouette and midrange.

HG

[Aviator]

Si compres barato, compres mas hace rato.

Usually true!

[BFD]

Si compres barato, compres mas hace rato.

Usually true!

Then again, you could buy an MVA B5 and never look back.

[SSShooter]

Then again, you could buy an MVA B5 and never look back.

+1