I have a different question for my gun. In reloading I ordered the classic 215 gr RN for my SMLE. Same NO4 MK I style rifle made into a pseudo scout. Is that rifling twist good? I figured it might have been fine as the guys pounding the trails with boots might find the 215 gr ammo issued to them. I haven't run a tight patch to see. Just thought I would ask the question before I load some? I can get other sizes but I go for long and heavy for caliber bullets for most guns. Steve R.? Be Well, Packy.
Sorry I missed this. Yes, the 1 in 10 twist is fine. The original loads, both bp and smokeless, used 215 gr. bullets. You're good to go. 🙂