Richard, I have only ever seen the "Standard" button-rifled with recessed crown rifle sold at Buds. I would contact Winchester to see if it's still manufactured and they may be able to put you in touch with a distributor at (800) 945-5237 or (801) 876-3440.

its available in a 24 inch octagonal barrel specs Item Number 534227142 UPC 048702006043
Caliber 45-70 Govt Barrel Length 24"
Overall Length 43" Length of Pull 13 1/4"
Drop at Comb 1 1/4" Drop at Heel 2"
Weight 9 lbs 12 oz Magazine Capacity 8
Twist Rate 20" Barrel Finish Brushed Polish
Stock Finish Satin Wood Grade Grade III/IV
Receiver Finish Color Case Chamber Finish Polished
Barrel Material Steel Barrel Contour Sporter
Stock Material Black Walnut Recoil Pad Crescent Metal
Pistol Grip Cap None Checkering None
Sling Swivel Studs None Receiver Material Steel
Trigger Finish Brushed Polish Bolt Slide Finish Brushed Polish
Magazine Type Full-Length Tube Trigger Material Steel
Trigger Guard Material Steel Trigger Guard Engraving None
Drilled and Tapped for Scope No MSRP $1,739.99
winchesterguns.com/products/rifles/model-1886/model-1886-current-products/model-1886-deluxe-rifle-case-hardened.html