does anyone know where i can find a slug brl. for my win 1400 auto-loader,either a 22in. or a 24in. with or with sights.

Look at gun shows and if all else fails .
Buy a 1200 or 1300 slug barrel and have the gas port or ports EDM'ed or drilled out.
The pump and auto barrels are the same except for the gas port .
I used a 1400 barrel for years on my 1200.

Johnch