Have the action and the bug for this round. Is the conversion possible or do you definately need the magnum length action? Thanks guys.

Go ahead!
I have one, buildt on a Win.M70, pre'64, stainless steel.
This rifle was chambered in .338 Win.Mag.I just removed the little "clip" thats welded in the back of the magazine well, removed some steel on the bolt-stop (so I could get the bolt all the way to the rear position), I rebarreled it with a Shilen barrel chambered for .338 RUM. I can get a maximum lenght on my .338 RUM cartridges, on 91,4mm. in that magazine. I can have 3 rounds in the magazine. (1 in the chamber, and 2 in the magazine)
I have a laminate,straight, classic, stock on it. With two crossbolts, and the whole action glass-bedded into the stock.
I love this rifle!!

One thing you might want to think about. The ejection port is shorter on the standard mag. action as opposed to the long magnum action. I too put in a 300H&H magazine box and shortened the bolt stop to increase bolt travel. I did this so that I could seat the bullets out farther in my 300 Win. Mag. This was in a push feed model 70.
It worked well and would eject a fired case ok, but if ejecting a loaded round the overall length of the loaded round caused the bullet tip to hang up on the front edge of the port. If you had a misfire and wanted to reload quickly you might have problems.

I'm with you on that, Thunder Child.
That could be a problem in mine to. But I dont see that as a big problem.

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Thanks for the reply--I'm going to pursue this, I'll print your post. Thunder, thanks for the warning, I can't think of an easy fix to this one but I'll work on it. Appreciate the help.