Progressively rifled barrel for Enfield 1853/58

[Smokybob]

Whitacre told me they don't make Enfield replacement barrels, just Springfield.
And Mr. Hoyt is not taking any new orders until "this fall".
Any other barrel maker filling this niche?

If this has already been addressed my apologies, BUT MR Whitacre just did a .577 Enfield barrel for me last year.