Engineer here too!

I had a bbl like the lower image that lonewolf posted once. Try doping a rifle for distance when your barrel has 20 moa of arc. Lol

Regarding convential wisdom and barrel arguments there are a certain number that hold true. I think a good number of these have been previously mentioned. I think the bore is often overlooked for the muzzle as a cause of woe. There was an article where a barrel was intentionally destroyed while testing accuracy. The results were shocking!

https://rifleshooter.com/2018/03/do-...fect-accuracy/

https://www.longrangehunting.com/art...ted-crown.670/

see if you can stomach those articles. Lol