Barrel question for Replica N0 4 T Sniper

[Surpmil]

Welcome. Seeing as you're in Australia, you can buy the book An Armourers Perspective .303 No 4 (T) Sniper Rifle and the Holland and Holland Connection. | Owen Guns, Gympie, Australia. or read the articles: Milsurps Knowledge Library - Technical Articles/Research for Milsurp Collectors and Re-loaders