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338/378 Weatherby MK V Accuamark

 
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  #1  
Old 11-19-2010, 07:22 AM
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338/378 Weatherby MK V Accuamark

Got one on order, will put a Leupold MKV tactical 6.5X20-50MM LRT with TMR recticles on top. Intend to make this into a long range shooter. I will probably have the barrel re-bedded, the bolt looked at to see if it needs to be squared, trued? This rifle should have the ability to have plenty of energy at 100 yards with a good 300 grain bullet. Boy is the brass ever expensive, I live in Canada and a box runs around 90 bucks before taxes for 20 rounds.
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Old 11-19-2010, 10:18 AM
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Location: Melbourne Australia
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Re: 338/378 Weatherby MK V Accuamark

Quote:
Originally Posted by eaglesnester View Post
Boy is the brass ever expensive, I live in Canada and a box runs around 90 bucks before taxes for 20 rounds.
Count yourself lucky is all I can say.
I own both, the 30-378 and the 338-378 and cases for each average at around $6:00 to $6:50 per case in the land of Oz.
I have 800 cases between both rifles and so you can guess what it has cost me in cases alone. Well over $5,000 dollars.
Yes this sport is definitley not for the faint hearted and nor for faint pockets for that as a matter of fact.
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Old 11-19-2010, 11:21 PM
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Re: 338/378 Weatherby MK V Accuamark

good choice. Bed the action, not the barrel. make sure the barrel is free floated and shoot it. my .340 Wby on a mark V was awsome.
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Old 11-20-2010, 06:18 AM
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Re: 338/378 Weatherby MK V Accuamark

As Angus-5024 has stated bed the action and not the barrel.
In addition to that either have a smith work the trigger down to 2 lbs pull or fit a Timney aftermarket trigger and set it at 2 lbs like I did.
With carefully prepared handloads you should be able to get 1/4 to 3/8" groups out of your standard factory Accumark Krieger barrel like I am getting.
Good luck and good shooting
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Old 11-20-2010, 07:38 AM
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Re: 338/378 Weatherby MK V Accuamark

Thanks for the info on accuraizing the 338/378. I have never set up a rifle before so bedding the action and not the barrel is something I needed to know. Will have a good machinest gunsmith do the work. Here in B.C. Canada Dave Jennings Sports is the Weatherby rep. I will have him set up the rifle.
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  #6  
Old 11-20-2010, 09:59 AM
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Re: 338/378 Weatherby MK V Accuamark

You will love the rifle. You might try shooting it right out of the box. Mine shoots great, and I didn't do a thing to it.
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  #7  
Old 11-20-2010, 02:38 PM
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Re: 338/378 Weatherby MK V Accuamark

I also have a CZ550 in 375H&H. I loaded up some rounds with Barnes TSX 235gr and when I chroyned them I was getting 3090. Not too bad for a loading that is over 100 years old. Now that performance is right in there with the 338/378 which was quite suprising to me. I wish Barnes made boatails in 375H&H it might help the B.C. then the 375 would for sure be right up there with the Weatherby. So far I have only tried Acubonds 270gr, Hornady 270gr and Barnes 235 and 270TSX.
The Acubonds are boattails but I am only getting 2800FPS out of the business end so I guess that limits the rifle as a long range shooter?
I bought that Sinclair tool to measure distance to the lands. It is a little more complicated to use than the Hornady tool but it is also way way more consistant. I recommend it, as it should help in long range ammunation prep.

Cheers & Tighter Groups: Eaglesnester
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