Thanks USSCYCLOPS. It's going well...smoothly? Opinions may differ!
This past week, I've been working on the 8 inch guns. I got the barrels from B&D Barrels and they look good. Flash back to when this project first started, I sawed off the plastic barrels and glued the metal barrels on. Primed, painted and put it in a tin cup and kicked it down the road. When I posted pictures of the ship and dry fitted the 8 inch guns, I had some concerns. It didn't look right, I kept telling myself, these barrels look longer than it should (see Oregon56).
Late spring of 2020, a local member from my local modeling group sent me a copy of the USS Oregon blueprint. I looked at the blueprint and set it aside on my desk. Couple of weeks ago I rolled out the blueprint and needed to work on some calculations. The legend of the blueprint, 1/16 inch equals 1 foot. So doing some calculations, I calculated that the barrels length (depending where you measure) it's roughly 14 feet long. Multiple that by 12 (for inches) and divide by 225 (1/225 ratio), the barrel length should be roughly 3/4 inch on the model. If you were to just saw off the plastic barrel and replace it with the metal barrels from B&D, it is 7/8 inch long, 1/8 inch too long (Oregon58).
After facepalming and covering my face trying to figure out what to do, I decided I just had to somehow fix it. So I grabbed the tin can full of primed and painted barrels, and broke off the old plastic base (Oregon61) and chucked it. After fiddling around how to place the barrel, thinking do I create a new base, I just wanted to keep it simple. So I glued the barrel to the turret, adjusted and waited to dry. Measure, broke it off, adjusted and finally was close to the desired 3/4 inch. See Oregon60 for comparison.
Since I was working on the turret upside down, the left barrel was easy to do. The right barrel needed a some modification. I had to scrape some material so the right barrel will line up on par with the other barrel (see Oregon62). Eventually both barrels line up equally.
I finished up fixing all 8 barrels and dry fitted it on the ship. After all that work, it was well worth fixing it. 1/8 of an inch makes a huge difference.
Things are looking good...the old battle wagon is starting to take shape. My apologies for writing such a long post. I wanted to share my experience if anyone who wanted to work on the Oregon, at least there is a reference.