M14 EBR Straight Pull - Scope

[HALODIN]

Nice!

[HALODIN]

Does anyone see a problem with this scope before I part with my cash? The only potential issue I could see is the click value. Any thoughts?

http://www.weaver-mounts.com/optics/rif ... rslam_euro

Model 800373 - 4-20 x 50
Exit Pupil (MM) 9.52-2.44
Field of View ft@100 yds/ m@100m 25.1-5/8.4-1.7
Eye Relief (in./mm) 3.94/100
Length (in./mm) 3.94/100
Click Value in.@100yds/ m@100m ¼/7.3
Adjustment Range in.@100 yds / m@100mm 41.89/1.16
Weight (oz./g) 28.4/805

• Same great features as the 1-inch tube Super Slams
• 30mm tubes (Euro-Style)
• First focal plane reticles
• Expanded reticle offerings
• Side focus parallax adjustment (except for 1.5-6 model)

[HALODIN]

Sorry I also wondered whether the Adjustable range was within the normal range. I do want to shoot this out to probably 600 at some point.

i.e. "Adjustment Range in.@100 yds / m@100mm 41.89/1.16"

[HALODIN]

Perhaps if I reworded the question...

Based on the stats above, if the elevation and windage adjustment range is 41.89 inches @ 100 yards, does this extrapolate out per 100 yards? i.e. if I'm shooting at 600 yards, will I get 41.89 * 6 = 251.34 inches of total elevation and windage?

Assuming that's the case, from the optical centre, I would then have 126 inches of elevation to adjust the scope and assuming the drop in trajectory of a .308 is somewhere around 75 inches @ 600 yards, would this scope be OK for shooting at that range?

Is that clearer?

[John MH]

Adjustment appears to be in 1/4 MOA clicks, they state that you have 40.89 inches of adjustment at 100 yards that is approximately 40 MOA. So if you are zeroed at 100 yards at the bottom of the adjustment range you can dial in another 40 MOA to get you zero'd at 600 yards or further.

To know if you are going to have enough elevation you need to know the predicted bullet drop in MOA for the range of ammunition you are going to use from 100 back to 600, 800, 900 or 1000 yards depending on where you want to shoot.

If the scope looks like it will be struggling to accommodate the range of adjustment you are after and will be mostly used at a range where is is not optically centred then you might consider getting a mount with some pre-cant, say 20 MOA, this will allow you to get further out and not be adjusting the scope to the extreme ends of its range.

As a side 40 MOA total travel is slightly less than average for a 4-20 scope but that is reflected in the price.

[HALODIN]

Thanks John, that was the reassurance and information I was after! Much appreciated!

What would you say is a typical drop in elevation for a .308 at 600 yards? Does 75-100 inches sound about right?

[John MH]

What would you say is a typical drop in elevation for a .308 at 600 yards? Does 75-100 inches sound about right?

Depends on the bullet used and Muzzle Velocity achieved.

7.62mm M852 Match 168 gr HPBT for 24" Barrel with a 2600 FPS Muzzle Velocity zero'd at 100 yards you will need (cumulative MOA):

2.25 MOA to get to 200 yards

5.25 MOA to get to 300 yards

9.0 MOA to get to 400 yards

13.25 MOA to get to 500 yards

18.0 MOA to get to 600 yards

23.5 MOA to get to 700 yards

29.75 MOA to get to 800 yards

37.25 MOA to get to 900 yards

45.5 MOA to get to 1000 yards

You can see from this that in order to get to 1000 yards if you are zeroed at 100 with the scope you are going for you’ll run out of adjustment.

[Mikaveli]

He _may_ just run out at 600 too - depending on how much adjustment he uses to get it zeroed.

[John MH]

He _may_ just run out at 600 too - depending on how much adjustment he uses to get it zeroed.

True, a lot depends on the mounts.

[Mikaveli]

But to be fair, if you're shooting at 600yds and 1 or 2 MOA is noticeable, you're doing well!