I agree on limiting range with ultralight rifle. I hunt in forested areas not subject to longer ranges. In target shooting the ultralight barrel heats up very fast after a few shots, but for my use its perfect on normally one shot kills.
Good points on long barrels, although noting that the Mil Sniper models seem to have somewhat long barrels, also undersatnding that a true sniper rifle will have the most precise machine work and bedding which should reduce the long barrel “play” you mentioned.
I did not mean to mislead anyone in comparing a sporter barrel to a military grade sniper rifle. Since most military barrels are chromed and use a completely different kind of stability medium. Sporter riflings are extremely damaging to bullet flight and there is no comparison.
You know your stuff for sure.