Today I decided to use my borescope on my Atomic after putting about the three, maybe 400 shots through it since it was new, also I cleaned it for the very first time.
Correct me if I’m mistaken but it looks fantastic, the only issue that I could see was at the choke, I would say about 70% of it has some lead buildup, and the other 30% has none that I can see.
Lightly polishing it will be something I do next month, hopefully that helps.
One thing I did learn is that when I remove the barrel, I might need the borescope to line up the TP, I put the barrel back in and tighten down the set screws in the same way that I did when I was checking for leaks but decided to take a quick look with the scope and it was partially obstructing. There’s a little too much adjustability with the set screws, I suppose I could use a feeler gage in between the shroud collar and breach block though.
I’m getting ready to run it over the Chrono, just to make sure it was nothing major. If it is, I’m going to have to redo all the DOPE
.
Correct me if I’m mistaken but it looks fantastic, the only issue that I could see was at the choke, I would say about 70% of it has some lead buildup, and the other 30% has none that I can see.
Lightly polishing it will be something I do next month, hopefully that helps.
One thing I did learn is that when I remove the barrel, I might need the borescope to line up the TP, I put the barrel back in and tighten down the set screws in the same way that I did when I was checking for leaks but decided to take a quick look with the scope and it was partially obstructing. There’s a little too much adjustability with the set screws, I suppose I could use a feeler gage in between the shroud collar and breach block though.
I’m getting ready to run it over the Chrono, just to make sure it was nothing major. If it is, I’m going to have to redo all the DOPE
.
and 
1.93 increase in avg. FPE and 28 avg. FPS compared with my original out of the box crono data. 
