I have an original 1892 Krag rifle in fine condition.  Are these rifles safe to shoot with modern factory loaded ammo?  I have some SuperX 180 grain silver tip and some older SuperX full jacketed round nose.
Steve

Mine are safe with the available loads.  Check yours out of course, make sure the bore isn't full of something, etc.  Otherwise, no reason to be afraid to pull the trigger.

All original 1892 Krags are extremely rare. I was under the impression that they were armory converted to the 1896 configuration.

I'm not so sure that I would fire this rifle due to it's collector's value.

Collector's value is subjective... and depends on condition and just how much is original.  Pictures would help with this.  That said... I don't own a gun I haven't fired at least once.  Like Madsenshooter said... it should be safe, but if you're really concerned, then have a gunsmith (one who knows antique weapons, and not just high power hunting rifles) give it the once over.

Thanks for all the comments and suggestions.  As for photos, I can't get even get one of my photos to load on this website due to my files being too large.  If anyone wants a set emailed directly to them, just send me a direct email at sds1861@aol.com.  As to condition and originality, the gun is 100% righteous down to every single part and in excellent unmolested condition.   I'll put it up against any specimen out there.  It appears to never have been apart.  Serial #7590. 
Kindest regards,
Steve Stevens   

I long thought the 40000 psi given by SAAMI was too hot, but reading old Army Ordnance reports from the 1890s says they were loading to over 40000 at times. Still, I prefer to load lower. Modern powders will match the original performance at under 34000.

Email sent to you Steve, watch for nutrinutbob, in case it hits your spam box.