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You don’t really have much of a clue, do you?
The K98k and M-N are totally different, and fire totally different ammunition.
As for fast, I’ve managed 17 rounds in a minute out of a M-N (and that was going some), but 25 in 50 secs from an Enfield No.4.
And what on earth makes you think that the Springfield was a single-shot (I’m assuming that’s what you mean)? And what on earth is a “short sighted rifle”?
IMHO, best to worst of the WW2 sniper rifles:
No.4 mk 1 T
Springfield
Mosin-Nagant
K98k
heh heh, WHAT models are you considering, first of all YES the kar98 and the mosan nagant took the same ammunition, i was told that when i went to military training, mate.
I heard the germans and russians 1940’s were constantly using the enemies ammunition for their rifles.
Also regarding your other question, what on earth is a short sighted rifle?, It’s a term i grew up pratically, not many people use it, it means specifically made scoped rifle and not a casually attached sight.
Are you Ironman’s Russian alter ego?
The Mosin-Nagant used rimmed 7.62x54R ammunition. The 98k uses rimless 7.92 ammunition, a totally different cartridge. They are not interchangeable.
The same applied to submachine guns:
The PPSh41 and the PS used 7.62 x 25
The German submachine guns used 9mm Luger.
Jan
You git Ive just sprayed Lager all over my monitor!!! 
Sorry, mate, as Walther says, 7.92x57 and 7.62x54R are vastly different cartridges - for instance, the 7.92mm is rimless; 7.62x54R is rimmed (as the R suggests). The diameter of a 7.92x57 is .323", that of a 7.62x54R is .310"-.311".
I’d like to see you chamber one in the other, let alone fire it :twisted: Whatever they told you in basic was poppycock - it often happens. A guy I worked with was told during basic that the Indian Rifle 2A could chamber and fire both 7.62x51 NATO and 7.62x39 Soviet :shock:
And no true sniper rifle in the 2nd world war (or indeed ever) has had a “casually attached scope” - the Mosin-Nagants had a scope rail gunsmithed on, the No.4(T)s were bedded and had scope mounting pads attached by Holland and Holland, Springfields were specially selected and had mounts added, as were the Mausers. Some rifles came with mounts as standard, e.g. G/K43, but these were not true sniper rifles. All the true sniper rifles were bolt-action magazine rifles with a capacity of 5 (except the No.4(T) which took 10), and had varying degrees of ergonomic refinement (the No.4(T) being the best).
As for using each other’s ammunition, well they were using each other’s wpns as well - there’s plenty of archive photos of Germans using SVT40s, and Russians using just about anything they could find. It was captured wpns that they were using captured ammo in, not their own.
The MP 40 had the reputation of being very sensitive to rough treatment and dirt (this is from my Luftwaffe AA NCO grandfather, who had to carry one during the war). Many german soldiers on the Russian front prefered to use a captured PPSh 41 instead, due to better reliability.
Jan
I stand corrected and feel like a fool for i have misheard what rifle took the same ammunition. 
Well you learn something new everyday…
Tremendous post Cdo Jordovski !
There are people on this site that could learn from your comment, you saw the evidence and answered like a man !
For the record I don’t think you’re a fool, especially after that last post.
I try to stay within my specialist subjects when posting, but have learnt much when reading other threads where members speak from their own area of expertise.
I would definately want a Lee Enfield (scoped) in my hands if I was a sniper.