I have a 7mm Remington in a "Husky" 5000 Series, something of an 'econo' model' in dull finish and quite plain stock. Doesn't stop it from shooting very nicely! Also have a Husqvarna 1600 series in 300 Norma Magnum. This was never a "factory chambering", but mine really looks factory! The point, it handles the NM quite well. I'd also follow the advice to stay both in conventional short mag chamberings and also not exceeding such "standard diameter". Were it me, I'd seek out one of those Husky 5K actions as a good, non-complex start toward building your rifle!
Best!
John
