Recent content by Maximumsmoke

Guys, "groove" diameter is larger than "land" dia. In modern times, most center fire rifle cartridges of between 6mm and 10mm or .25" to .375" have groove diameters from .006" to .008" (0.15 mm to 0.2 mm) larger than the bore/land diameters. For example, the nominal .358 Win diameters are .358...

Thanks!

Thanks Grumpy, but I do not have to put in a complete plug of molding material. I don't need one of full diameter or length to get a good cast of this particular inside thread. Think about it. If using something like Acraglas, first apply a thin and careful wipe of a release agent then dam up...

Nice gun, and nice wildebeest. Big scope -- looks like quite short eye relief -- must be a nice low recoil gun. What's the purpose of that little hook on the back of the trigger guard? Was this a conversion of one of the Greek military Mannlicher Schoenauers, or was it a Steyr M-S sporting...

Thanks for confirming the figures in my post, Grumpy. Pitch gauge? -- Yeah, done already -- easy enough to determine pitch, Proper thread form is the problem, though. It is hard to tell 55 from 60 with a simple pitch gauge, nor with a 60 or 55 degree thread gauge shortened enough to get...

It sounds like you know threads, but you really should familiarize yourself with the various systems before you make proclamations on what constitutes them. Particularly to the "V" or "Sharp V" thread, you might find the info on page 1806 in the 27th edition of Machinery's Handbook...

I have the action of a Mannlicher-Schoenauer 1903 Greek military rifle. I intend too make a decent custom sporting rifle from this and since it has no barrel, and I need to make one -- yes I will stick to 6.5x54 M-S chambering. I see on one forum that in a book by Frank de Haas' the thread is...

Bob, the nominal diameter of the rim on the 9.3x62 is actually a tad smaller than the '06 -- by .003". So nothing need be done to the bolt face of a 1918 or a Rem Model 30 in .30-06. The nominal base and shoulder diameters of the 9.3x62, however, are larger than the '06 -- by .005" and .010"...

BaxterB has previously led me to his amusing story which relates the magazine design requirements that must be observed for optimal feed and function of bolt action rifles for particular cartridges, as well as the implementation thereof. It is gratifying to see the info you sent is exactly the...

Got it. Super! Thanks Shootist43.

You can get Kuhnhausen's book on Amazon (new for $59.99 or thereabouts today) or from used book services for probably $35 to $40. I bought mine a couple of years ago on Amazon. Yes, it is still in print. I made a quick search for a .pdf and I haven't found one yet.

Here's a great article on big-bore conversions of the 1917 and P14 Enfield action, and it covers much more extensive changes to the feed rails than you will ever need on your Mauser to 9.3x62, but you'll get the idea. Hope it helps. My guess is you need very little to tune up your action.

I believe there is some info on opening the feed rails in Jerry Kuhnhausen's book on Mausers. I don't have the book handy right now to be sure of that statement, but I've seen info on performing that operation somewhere -- perhaps it was in some article I have on converting a 1917 or Pattern14...

Yeah, I've been glassing over the nominal cartridge dimensions and find this comparison: 1) Rim diameter: 9.3x62 is .470", .003" smaller than the .30-'06 (.473") 2) Base diameter: 9.3x62 is .476", .005 larger than the .30-'06 (.471") 3) Shoulder diameter: 9.3x62 is .451", .010" larger...

Talk over on the "3 Favorite Hunting Cartridges" thread got me to thinking whether I really should have a 9.3x62, even though I already have a couple of .35 Whelens, a herd, though small, that I probably should thin down anyway, but I digress. My question is to those of you who might have...