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Rem 700 VS w/ 20 moa mount question

 
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  #1  
Old 04-22-2003, 03:37 PM
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Rem 700 VS w/ 20 moa mount question

I recently purchased a Remington 700 VS in .308. I added the Badger Ordinance 20 moa 1-piece mount with medium rings, and the Nightforce 8-32 x 56 NXS scope. My problem is that it takes approximately 30 moa elevation change to get my zero at 100 yards, and I run out of elevation before I get to 1000 yards. The rings are lapped with Sinclair's tool.

Do I go to a 40 moa 1-piece mount like Nightforce offers, or has anyone else run into this problem. A friend of mine has the same set-up, but he has the 5.5-22 x 56 scope. He has the same problem. We both think that 28 to 30 moa is a great deal of elevation to have to dial into the scope just to get to zero. Any help would be appreciated.
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Old 04-22-2003, 04:40 PM
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Re: Rem 700 VS w/ 20 moa mount question

Ok, maybe it's just me, but this does not compute in my mind.

.308 Winchester, depending on the bullet, velocity, barrel length (i.e. back to the velocity thing), etc. generally uses from ~35-44 MOA to get to 1k from 100yds.

I forget what the exact numbers are for the particular NF scope you are using, but christ, w/ a 20MOA base it should be a god's plenty to get you to 1k. I mean, when you really look at it, about half your required elevation is already taken care of by the 20MOA base, leaving you 15-25MOA to deal w/ in the scope. Realistically, since you have a VS, and not a sawed off LTR, you are probably looking more in the 15-20MOA range. Like I said, I don't remember how much exactly the 8-32x NXS has for adjustment, but it should be *plenty*, assuming a reasonable load...

*groan* you wouldn't by chance be using something like a factory load w/ a 168gr SMK in it, would you?!?

If you are, my advice to you would be to ditch it, and either handload a 175gr SMK to a healthy speed, or find a batch of Fed Gold Medal or Black Hills Match w/ 175gr SMK. Should make a noticeable difference.

If you aren't, I'd say I'm corn-fused as to WTF is going on. And would dearly love to know what shakes out on this one.

Monte
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Old 04-22-2003, 05:05 PM
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Re: Rem 700 VS w/ 20 moa mount question

I had the same scope on my 6.5-284. I would get a set of Burris signiture Z rings with the plastic inserts that shuld give you the elevation you want.
Crow Mag
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Old 04-22-2003, 05:34 PM
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Re: Rem 700 VS w/ 20 moa mount question

Milanuk,

The 8-32 Nightforce allows about 65 moa total elevation adjustment. I am using 30 of the 65 just to get to zero with the 20 moa 1-piece Badger mount. My buddy's 5.5-22 has 90 moa of elevation, but we both thought that dialing 30 moa into the scope with the 20 moa mounts seemed like a lot of elevation. That is why we were wondering if we should be using the Nightforce 40 moa 1-piece mount instead of Badger's 20 moa.

I hand-loaded Winchester cases with 42.0 grains of RE 15 using 168 grain Sierra Match Kings. I seat the bullets .010" from the rifling which gives me an over-all length .110" longer than the factory-recommended 2.800". I know the Black Hills ammo is seated at 2.8" to fit in the magazines, but I load one round at a time. My groups are tight, but I'm wondering how much I'm giving up in velocity by seating my bullets out near the rifling (lots of extra case volume with the bullet seated so long). I don't have a chronograph to test my loads, but my groups are great. I'm hitting 20" x 40" siloettes in the center of the chest from 400 out to 1000 yards with half-value wind.

My friend with the 5.5-22 Nightforce uses the Black Hills 168's and has to dial in a similar amount of elevation to get out to 1000 yards. He had 50 moa dialed into his scope with 20 moa additional on the scope mount. I had to use the NP-R2 reticle's additional 20 moa to get the total of 52 moa I needed, plus the 20 moa in the mount to get to 1000 yards. My buddies Black Hills ammo is 2.800" over-all length. We both use the Davidson Comparitor to determin our over-all lengths (bullet ogive).

Any thoughts or concerns would be appreciated.
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  #5  
Old 04-22-2003, 06:37 PM
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Re: Rem 700 VS w/ 20 moa mount question

How many moa did you have to use without the 20 moa base to get on at 100 yards? How far back do you have the scope on the base?
I had a 300 win mag shooting 220 mk's at 2800fps and had leupold quick detach bases and rings with the same scope.No 20 moa base and was able to get to 700 yards before i ran out of adjustments. This was with the 8x32x56 NXS and had High rings also. Something doesn't seem right. I am sure you have checked this but could the base be backwards? I know sounds stupid but we all do things sometimes.
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  #6  
Old 04-22-2003, 08:07 PM
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Re: Rem 700 VS w/ 20 moa mount question

30 of the 65MOA, *with* the 20MOA base?!?

Are you dialing 'down' or 'up'?

Monte

P.S. Again, the 168gr isn't really an ideal choice for that kind of distance (designed back in 50's-60's for 300m competition); the 175gr SMK is a *much* better choice, as it was designed specifically to address the shortcomings (pun intended) of the 168 at longer ranges. Then again, hell, the .308 Win isn't really an ideal long range caliber either. But it *does* work quite nicely [img]images/icons/wink.gif[/img] Heat that load up a bit to something like 42.6gr of RE15 behind a 175gr SMK and watch your drop decrease dramatically.
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  #7  
Old 04-22-2003, 08:22 PM
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Re: Rem 700 VS w/ 20 moa mount question

Nzzy,

I'd say it's your action and barrel threads not pointing in the same spot, much like my one Rem 700. I shim in order to zero at 100 and My 8-32 Sig needs 100% of the eleveation just to zero if I don't. Just switch to different bases or the Sig ring as mentioned and live with it.
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