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I recently acquired a Whitworth Interarms in 7mm Express (280 Rem). I bought a 2 peice set of Warne Maxima steel bases, weaver style that fits FN Mausers, Interarms, Charles Daley, etc. The hole spacing is correct for both front and rear, and the front base seems to be a good fit to the receiver. The problem is the rear base. The contour is not quite correct and when mounted, the base is about .030" too tall. I can't find any reference to the Whitworth rifles in any of the mount fitting charts from any manufacturer. Can anyone help me find a correct set of bases to fit this rifle? Thanks | ||
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I would guess that you received a rear base that was incorrectly packaged. Do you have a measurement on the base height? I have a set of the same bases(Werne Maxima for FN/interarms) and we could compare measurements. Also, I have several FN and Mark X receivers and I will trial fit the rear base to check the contour. Jason "You're not hard-core, unless you live hard-core." _______________________ Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt. Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure. -Jason Brown | |||
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Jason I have a M98 VZ24 and its rear base matches the height of the new ones. The base is .315 high in the center (at the screw holes). I did find chart on Talley's web site that shows the height of the various rear bases for different rifles. It looks like the height I need is about .280 given the front base height. It looks like this Whitworth Interarms is not a Mark X, but a small ring M98. This assumption is bases on the difference in the heights of the rear bases specified for Talley's rear bases. So I have ordered another set, this time for the small ring mauser. I will get them in about a week. We'll see how that goes. Thanks for the reply. | |||
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To quote one of my boyhood friends, "I ain't never heard a that."  I think all Whitworths are large ring Mark X type actions, but I am often wrong. To tell the difference between large and small ring just look at the outside of the left side of the action. If it the front ring is wider than the left rail(creating a step at the front ring) it is a large ring. If the outside of the left rail is smooth all the way out, it is a small ring. Also, the LR is 1.410" and the small ring is 1.300". Jason "You're not hard-core, unless you live hard-core." _______________________ Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt. Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure. -Jason Brown | |||
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Based on this, it should be a large ring, but the rear bridge seems to be higher than on my VZ24 and the contour is different. I guess I will just have to wait and see how this turns out when the new bases arrive next week. | |||
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I have lots of types of Mausers and lots of #45 and #46 Weaver mounts. Every type of Mauser seems to have different heights of the rear bridge relative to the front bridge. I have ground relief in a pair of V blocks. The V blocks clamp the mount in the mill vise. The underside of the mount can then be relieved or the radius adjusted for magnitude or offset with a fly cutter or boring head. I got that from a Steve Acker article in "Home Shop Machinist". I have put slender shims of masking tape under a mount until the two mounts are the same height. Then I epoxy bed the mount to the receiver. The goal for me is to get the mounts so that a scope [with adjustments centered in the scope tube] is perfectly bore sighted and the rings are co linear so there is no bind on the scope. | |||
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Often the #55 and #20 weaver bases are specifed on commercial mauser actions. There is so much variance that alterations seem to be the norm.  Aut vincere aut mori | |||
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And many of the Yugo intermediate-length receivers have wrongly-shaped off-center rear bridges. I haven't heard of any Whitworths with this problem but the early Mk Xs were intermediate length Yugos and it's my understanding that the Mk Xs, Whitworths, Herter J-9s and similar actions were all made in Yugoslavia on the same machinery. Regards, Joe __________________________ You can lead a human to logic but you can't make him think. NRA Life since 1976. God bless America! | |||
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Joe - I have a Yugo intermediate action and the Whitworth is not intermediate length. I measured the action screw spacing and it is longer than the Yugo and the same as my VZ24. The rear bridge is higher in relation to the front bridge on the Whitworth than on my VZ24. Tnekkc - I like your idea, but I don't have a way to remove about .030" to .035" from the receiver side of base I have. | |||
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David, I wasn't trying to say that it was intermediate length (G). I was trying to say that since it was a Yugo and since some Yugos from the same machinery had wrongly-shaped rear bridges then it might be A Good Thing to check the rear bridge profile and maybe even do a little file-&-stone work on it. That's how I've cured several others and it's easily done while you're blueprinting and squaring-up everything else on the action. It's a heckuvalot easier to alter the bridge than to alter the scope base, and according to many other folks' actual comparison the dimensions vary enough so that you'd still be within spec. FWIW that's the way I'd consider doing it. Regards, Joe __________________________ You can lead a human to logic but you can't make him think. NRA Life since 1976. God bless America! | |||
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Joe, I didn't think you were saying it was in intermediate, but since the possibility did exist, I wanted to be sure, so I measured it. This is an older rifle. My reason for saying that is the barrel is stamped "7mm Express", not "280 Rem". Remington changed the name of that cartridge many years ago, so that puts some perspective on the age of the rifle. I will find out at the end of the week if the rear base for the small ring puts me close enough so that I can shim one of the bases to get them the same height. As it stands right now, .030+ is too much to shim. I would be more comfortable with .010 or less. Thanks for you suggestions. | |||
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I believe you mean the #20A. I don't like alloy mounts, but that stet-up is nice because it is so low. Jason "You're not hard-core, unless you live hard-core." _______________________ Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt. Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure. -Jason Brown | |||
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