Personally I think the sound in MOH is very close. In SPR your never "behind the gun" like when your playing MOH.
With that said, I also think SPR does a very very good job at capturing what a real one sounds
Here are some links to real weapons firing. Give them a sec to load.
BAR -
http://www.bigjimsmgs.com/VIDEOS99/BAR2.AVI
Thompson (This is an early savage model, please note the recoil or lake of) -
http://www.bigjimsmgs.com/VIDEOS99/28savage.avi
For all you RTKW -flame thrower
http://www.bigjimsmgs.com/VIDEOS99/flame2.avi
The other problem is when ever I go to the range, I have to shoot from inside that building you see. Thus we must always were Ear protection, along with eye protection. I have fire full auto Thompson's at the gun store in Las Vegas and it's the same deal, firing inside with ear protection.