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Author Topic: How about Weatherby Mark Vs  (Read 2210 times)

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Offline Sourdough

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How about Weatherby Mark Vs
« on: August 29, 2007, 09:03:05 AM »
I have a Weatherby Mark V Accumark.  .338-378 and it has some recoil.  First I put a cheap Bushnell on it just to work up a load.  Worked up a good load that would have all shots touching at 100 yards.  Then I bought a Night Force scope.  Mounted it and went to the range.  On the third shot the scope base screws sheared and the scope went flying.  Luckily, I reached up and grabbed it before it hit the rocks.  Had to drill out the screws and retap the holes with larger screws.  Remounted using Warne mounts.  First few shots were fine then they went to scattering all over the target.  Tweeked the load then they went off the paper all togeather at 100 yards.  Moved back to 25 and started over.  Got to 100 again then off the paper again.  Checked the bases, and rings, everything is tight.  No movement can be detected in the scope.  I'a sending it back to Night Force.

Picked up a Pentax at a going out of business sale two weeks ago.  So on a whim mounted it on the Weatherby.  Went back to my original load and went to the range.  Looked through the bore and aligned the scope and bore at 50 yards.  First shot was 6 inches low and 4 inches right.  Made corrections and moved to 100 yards.  Second shot was 4 inches high dead on center line.  Made corrections, and next three shots were in the bullseye, all touching.  Moved to 200 yards, using the ballistic marks on the scope, shots were two inches high. Moved to 300 yards, again using the ballictic marks, again shot was two inches high, with a two inch group.  I'm Happy!!!!!  Taking it Moose and Bear hunting Friday. 

Went to the gunsmiths shop yesterday after leaving the range to discuss my scope problem with him.  He said he has seen two Night Forces scopes shaken apart by the 378 Weatherby derivatives, and three Shepards scopes also ruined by them.  I asked about the Pentax, he said it should hold up.  We'll see.
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Offline Inrut24/7

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Re: How about Weatherby Mark Vs
« Reply #1 on: August 29, 2007, 09:31:17 AM »
Interesting, I seem to be seeing more nightforce problems on internet forums as of lately.
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Offline PeterCartwright

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Re: How about Weatherby Mark Vs
« Reply #2 on: September 03, 2007, 03:48:15 AM »
Well, I guess if a scope is gonna have problems, your .338-378 will probably help that happen!  Any way you slice it, that's a LOT of gun!  Using larger mounting screws sure makes sense.  I'm a little surprised the Weatherby folks didn't make that adjustment to begin with.

The only Mark V I have is in .270 Roy.  It's an '84 vintage gun (Japanese era).  It was given to me (unfired after it left the factory) and stored for more than 20 years.  Fit and finish are superb and, in spite of its scarey thin, 24", "sporter weight" barrel, the most accurate rifle I own.  I'm still playing with the gun and haven't hunted with it.  Frankly, while the .270 Roy seems like a wonderful cartridge, my "woods hunting" needs don't require that kind of performance (though I may carry a much-reworked Howa .338 Winnie...just because.)

Enjoy your cannon!  At least you live in a place that can take advantage of its capabilities!
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Offline Paints-n-cows

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Re: How about Weatherby Mark Vs
« Reply #3 on: November 25, 2007, 10:01:59 AM »
I've got a Mark V in the 270 Wby round...man, oh man...what a screamer!!!

I have got a load that was worked up for it when I first got it and it will make them touch at 100 yds and you can cover the holes with a half dollar at 300 yards irregardless of how many rounds you want to put through the hole...5 or 25.  The rounds start opening up at 500 yds but they are still consistently under 4".  It does not like factory rounds but necksizing, weighing and grouping fired cases, weighing charges individually makes her smile.

The thin barrel does get hot fast and you really have allow it to cool sufficiently between shots (I usually wait an honest minute or more).  It is really finicky about pressure on the barrel as well. 

The scope on it is a Wby Supreme 3x9 that was on it when I got it.  Absolutely fantastic optics.

Not bad for a rifle that I only have $225 in...it pays to help move the household of a pissed off female going through a divorce ;D
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Offline Rogue Ram

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Re: How about Weatherby Mark Vs
« Reply #4 on: November 25, 2007, 06:28:00 PM »
Sourdough,

How about an update on your scope issue? Did it all work out?

Also, how do you handle the recoil? Do you have a brake on the cannon? Really curious how this gun is working out.

Tx

RR
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Offline Bill T

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Re: How about Weatherby Mark Vs
« Reply #5 on: December 12, 2007, 01:05:51 AM »


This is my .338-378 Weatherby Accumark. The scope is a Leupold Vari-X III 6.5-20X 40 MM in Leupold rings and bases. I have had zero scope issues with this gun. One of the biggest problems with Nightforce scopes is their weight. It's a lot of mass to get moving when the gun goes into recoil. With WC-872 Ball Powder and the Sierra 300 Grain Matchking I get very good velocity, and superb accuracy. The gun is box stock. With the Accubrake recoil is about the same as my unbraked Remington 700 in .300 Win. Mag.  Bill T.
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Offline Sourdough

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Re: How about Weatherby Mark Vs
« Reply #6 on: December 22, 2007, 08:57:44 PM »
OK, I had a cheap Pentax in the vault.  I put it on the .338/378 and the scope issue went away.  The Night Force is just too heavy.  My friend that uses one on his .338 Ultra Mag uses a timminey base and four warne rings.  I can't do that with my Weatherby, so I am stuck using a lighter scope.  Was told by a gunsmith here in Fairbanks not to use a Shepard scope either since he has seen several come apart due to recoil.  I am thinking about going with either a Burris or something with a range finding reticle.
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Where is old Joe when we really need him?  Alaska Independence    Calling Illegal Immigrants "Undocumented Aliens" is like calling Drug Dealers "Unlicensed Pharmacists"
What Is A Veteran?
A 'Veteran' -- whether active duty, discharged, retired, or reserve -- is someone who, at one point in his life, wrote a blank check made payable to 'The United States of America,' for an amount of 'up to, and including his life.' That is honor, and there are way too many people in this country today who no longer understand that fact.

Offline Brithunter

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Re: How about Weatherby Mark Vs
« Reply #7 on: December 28, 2007, 03:04:10 AM »
Hi All,

         A friends brother had mucho problems with his 30-378 MkV, wrecked scopes (Swaroski) and poor accuracy. It went back to Weatherby at least twice and by the end I think it was only the action that was original as Weatherby replaced the stock one time then the barrel and re-bedded it the second. It however finally took a Bench rest gunsmith to blue print it all to get it shooting correctly. However this all took a period of about three years. During this time I suggested he get rid of the rifle or use it for a boat anchor as to me that's all I saw it was worth. Stanley however doggedly struggled on with it.

    I don't know what scope he has fitted to it now but last I heard everything was OK.
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Offline oldelkhunter

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Re: How about Weatherby Mark Vs
« Reply #8 on: March 01, 2008, 07:22:05 AM »
 Nightforce scopes if not mistaken are in the 30 oz range or more...and subject to a rifle that recoils as  sharply as a 338/378 that would be a bit much to expect 6-48 screws to handle. I sheared them off with a 35 remington tc contender within 3 shots with a Leupold pistol scope mounted. YOu would need 8x40 screws and badger rings and then tell me that Nightforce failed. They are probably the most rugged scope ever designed although a bad one can slip out once in awhile like everything else.
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