Looks like it wasn't my last post...
Thank You Rob, for the thread link...I read that one...I don't want to sound like a jerk, but most of the "stuff" on that thread was total and complete KRAP. I don't think any of those peole ever heard of a lathe or a mill and the ability of a machinist to do just about anything they want with a piece of steel. And they were referencing FACTORY parts for the most part anyway, or the "dire consequences rhetoric".
I think I have addressed ALL the issues that I could find presented in all the posts I read if you or anyone bother to look hard, with an mind open to all possibilities.
All the major ones boiled down to pressure, receiver/magazine length and the bolt face/lugs.
Here is a picture addressing the bolt face and the magazine length, for the project I an doing right now.
Again. This will be a 500 AR...loaded to 45-55 KPSI, but can be chambered to the 338 Lapua just as easily, WITHIN SPECIFIC CONSTRAINTS. The bolt face measure 0.600" ID, the "ring" measures 0.045". A simple grinding operation with a lathe, ANY machinist can do.
The magazine is a standard factory available 375 H&H length (3.60" max is what I used for my 375 H&H depending on the bullet and where I want to seat it, some are much shorter) from the olden days...still available today from the factory AND from Midway and (I think) as the 300 RUM mag...just needs some work opening/grinding the lips.
The 300 WM mag box has a max COAL of 3.44". I KNOW, I just measured one and have several and chopped up a few make longer mags. The only difference in the mags is where the ridges are positioned for the various shoulder points.
The matter of the number of larger diameter cartridge fitting in the mag is easily addressed for anyone who actually had worked with modifying rifle magazines or has done any kind of gunwork except for those sitting in front of a monitory and getting all their expertize off the net...besides you can load two Rigby sized cases down WITHOUT ANY mods in the factory mag or follower. If you want another cartridge down then things get a little more involved but not complicated and can be done by ANY with a modicum of manual dexterity.
The garbage about the bolt diameter and the lugs I covered in the last post. It is pressure dependent anyway. Anyone look at the SAMMI MAP pressure for the RUM AND the LAPUA cartridges??? If you haven't, please do!!!, then understand that the pressure is adjustable.
The issue of cartridge length is nothing but seating the COAL to work through the mag, bullet OAL length dependent, OR another magazine can be made...relatively simply...the action is capable of a max COAL of 3.8 - 3.9" with a few SIMPLE mods.
I AM NOT ADVOCATING ANYONE DO THIS CONVERSION...ANY KIND OF CONVERSION TO/FROM A FACTORY RECEIVER/CARTRIDGE CASE IS INHERENTLY DANGEROUS...JUST THAT IT IS EASILY POSSIBLE AND SAFELY ACCOMPLISHED CONSTRAINED BY CERTAIN PARAMETERS, THAT SHOULD BE FULLY UNDERSTOOD BY ANYONE INVOLVED IN THE WILDCATTING OF A CARTRIDGE OR A RECEIVER...OR ANYONE RELOADING FOR THAT MATTER.
I apologize(somewhat) for being short and direct...I really get fed up with some of the armchair gunsmiths "Re-Petes" blowing fertilizer all over the place and claiming to be "experts"...I've been doing this wildcatting "stuff" for over 50 years and working with the Savage since the early '60's.
I don't claim to be any sort of Savage "expert", but I sure the **** check out the facts, empirically, with my own two hands and brain, BEFORE I do something or say something can be accomplished. I try to give direct factual answers to direct questions and expect direct FACTUAL answers to questions I ask. Of course I blow it sometimes and when I see that, I own up.
What I got wasn't anything like that, more like being placed in the position of a dependent child and a lot of "stuff" that wasn't germain. I'm a long way from being ANY dependent.
I will post pictures of the final product, targers and ballistics date, for anyone interested, on Accurate Reloading - Big Bore forum under Savage 500 AR probably sometime late Jun or July.
Luck on your projects.