Mil Spec FoS

[cory]

So your FoS is against the properties you acquired for the Lilja barrel?
Is it written against the yield stress?

You also have other affects that will interact with your final stress as well. With barrel flex, there will be a compression on 1 side and additional tension on the opposite side where the barrel is bending.

So on the tension side of the barrel when it is flexing, there is a hoop tension and a tension acting front to back where the barrel is flexing. Now I suspect those tension stresses due to bending to be fairly small but looking at some super slow motion footage of guns being fired, I don't think they would be insignificant.

Yes and Yes.

Originally I ran both radial stress and hoop stress. Radial Stress was significantly lower than the hoop stress, so I've since disregarded it.