I spoke with Jim a while back about the sako vs M-16 and the Sako will fail at about 123,000 PSI. You will have severe bolt failure at about 92,000 psi.
Personally, i think the m-16 vs sako is mute b/c of these facts stated above.
if you are a responsible reloader and understand that you need loads for different hunting locations, elevations, atmos. pressure, etc and listen to your gun - you won't have an issue.
Now if you put a 30 cal bullet in a .284 barrel - idc what extractor you have - you're gonna have issues
