MV lost with a clean gun?

[BigLarge]

While reading through another article I noticed this powerpoint as presented by NSWC in 2003 in regards to the CQBR upper receiver.

http://www.dtic.mil/ndia/2003smallarms/john.ppt

Notice slides 19 and 20. It appears that after 10k rounds a "dirty gun" has less muzzle velocity loss than a clean gun... about 100fps difference. Thoughts?

[Magic_Salad0892]

While reading through another article I noticed this powerpoint as presented by NSWC in 2003 in regards to the CQBR upper receiver.

http://www.dtic.mil/ndia/2003smallarms/john.ppt

Notice slides 19 and 20. It appears that after 10k rounds a "dirty gun" has less muzzle velocity loss than a clean gun... about 100fps difference. Thoughts?

Maybe residual gunpowder that gets left behind from shooting gets burned in subsequent shots.

[eodinert]

That is interesting. Too bad they didn't talk about the cleaning schedules.

This is reminiscent of the LuckyGunner test.