Home Forums Hunting & Shooting Mausers and Military Rifles Rifle, No. 4 Mk I, 300 WM conversion.

Excellent.
It gets quite old to constantly read posts, by those that have absolutely no experience with the Lee Enfield, spouting the weakness of the action, excessive headspace, etc.
The Lee design started production beginning in 1879, adopted by the US Navy then, modified to 303 and adopted by the Brits in 1888, and continuing in service with the Canadian Rangers until 2016 - considerably longer than the service life of the Mauser 98.
Not bad for a rear locking lug design.