Well listen to this! First of all I'm pissed, but lucky to still be alive!
Called weatherby, and this is a 7 Wby Mag. Damn!! Luckily I didn't tear myself and the rifle up shooting the Rem mag ammo through it. It was ammo my buddy had been shooting through it and gave to me to try out.
Obviously I was too trusting that this was the right ammo since that is what he had shot through it, and here's what had me believing him, the barrel is Stamped "weatherby" with the wby script, THEN BELOW THAT, stamped 7mm Magnum. Not 7mm Wby Magnum, when I was getting ready to shoot it that struck me as strange, the fact that it did not say 7mm Rem Mag OR 7mm Wby mag. And I thought it was strange being a rem mag in a wby mag rifle, and the way it was stamped didn't convince me it wasn't a rem mag.
And oddly enough, it shot pretty well! After some research apparently they are pretty similar, but different slightly different neck length and shoulder angle.
And after this discovery, if I would buy this rifle I would not shoot it until I rebarreled, and this rifle apparently has repeatedly been shot (a few rounds by me, unfortunately)with ammo it was not chambered for.
The action and stock still have me interested though. It is a deluxe, according to weatherby built sometime 80-81, made in Japan.
thats scary.. ! japanese mark 5's are very desirable from what I hear. I would guess the rifle is ok if it didnt blow apart, but I would have it checked out by a quality smith... whatever you do be carefull. and I am glad you figured that out!
" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
I have a Mark V Deluxe and the barrel is stamped "Use Only 7MM Wthby Mag" (as should be yours) and "Mark V" is stamped on the receiver right beside it. Even my Vanguards are stamped with the "Wthby only" if chambered in Wthby calibers.
One good way to see what you have is to look at the fired brass. Does it have the 7mm Rem Mag shoulder angles or the radiused Wthby shoulders? It should have fire formed to the chamber and be a dead giveaway. I received some 1x brass from someone that was supposed to be 7mm Rem Mag and some of the rounds were headstamped 7mm Wthby Mag.
Although shooting anything in a rifle it wasn't chambered for is a potential for a big "OH CRAP!", shooting the Wthby ammo in a 7mm Rem Mag would have been more of a concern to me than the 7mm RM in a Wthby chamber since according to my reloading manuals, the Wthby ammo is loaded to higher pressures than the Rem Mag.
Your friend isn't the 1st person this has happened to (or probably the last). I pickup brass from the range and you would be surprised how many times this happens. I found a handful of 30-06 rounds that someone had fired through a 35 Whelen (IIRC).....I found out when I tried to resize them and there was no way they would go in the sizing die.
FWIW, it should be noted that Weatherby does offer the Mark V Sporter (I know, not a Deluxe) in 7mm Rem Mag. Here are the specs from the site:
Unless you are a reloader the cost of weatherby ammo is outrages. Weatherby did chamber the 7RM in a Vanguard. Dont think the Mark V was chambered for this round. The rust you speak of does it go over the end into the barrel? I will say in VG shape $700.00 to $1000.00 it must be in excellent condition to get this kind of money. One thing the rust is going to turn some people off. Barrel life for the weartherby calibers is fairly short, They are barrel burners. It's not a rifle to go to the range and shoot all day. I just saw a Weatherby FS at greybeards sight for $695.00 I believe that is what it sold for. You may want to post pictures. Good Luck Lou
Doc, I stand corrected and apologize for any misinformation.
I had misread/misunderstood the part about the stampings. My 7mm is also an early '80s made in Japan and I just presumed that they would all be stamped the same. Now that I see the photo, I see that it is definitely different than mine.
And like you say about the ammo, there is less expensive out there. My Brother-In-Law has the same rifle as I do and he thought that it meant he could only use "Weatherby" brand ammo. He was griping about having to pay $78.00 a box for it and he refused to believe he could use Hornady or some other brand.