Just took my Thompson to the range for the first time (indoor as the gun is currently in prison at my local FFL until I receive my stamp)
We recorded the gun firing with our phone camera (so nothing high tech) but I was concerned when watching the video. When examining the video, there appears to be burning propellent at both the muzzle and the ejection port at the same time. I'd post the video if that's possible but don't know how to do that. I have grabbed a few video frames which I think demonstrates what I'm describing.
Is this something that should be of concern to me? Perhaps it's just a slow burning powder? Or maybe it's just an indoor range in a low light situation so the "fire" effect is much more pronounced, especially as viewed against a black wall? But to some extent, I must be loosing power and it does concern me that explosions are happening at the Ejection port of my firearm with the bolt retracting. Or is this the way all Thompson's function?
I already own a STEN and an MP40 and don't see this type of effect when shooting them. Of course, they are 9mm and now I'm shooting 45.
Thanks in advance for any/all input.