Speaking of Enfields and big calibers, I have three reproduction Enfields in .58 caliber.
The ones I have are the 1853, 3 band rifled musket, the 1858, 2 band rifle and the 1861 Royal Artillery Carbine.
They were all made by Parker Hale in England back in the 1970's, using the original Enfield gauges to assure authenticity.