Hi Henry and welcome. For the Henry Single Shot rifle you will need the Henry scope mount here: https://henryoutfitters.com/collections/rifle-parts/products/henry-egw-picatinny-rail-h015-series-single-shots ---------- Cheers, stay safe and enjoy!

Hi Henry, no sir, you need the rail made specifically for the single shot >>> https://henryoutfitters.com/collections/rifle-parts/products/henry-egw-picatinny-rail-h015-series-single-shots?variant=39335157563452
Stay safe & have a great day!

How's it going Les.
This Henry 2nd Gen scope base is primarily designed for the Henry lever-action rifles, such as the H001, H002, H003, and H006 series, but it may not be directly compatible with the Henry Single Shot rifles, as their design and mounting systems may differ.
For the Henry Single Shot rifles, including the .357 Magnum version, you would typically need a scope base designed specifically for that model.
To stay on safe side contact Henry customer service to confirm whether the Scope Base 2nd Generation will fit your model, also, check your rifle's receiver to see if it has the necessary mounting points for the base.
Hope this helps Les and may you and your family have a wonderful Happy Holidays!!

How's it going Les.
This Henry 2nd Gen scope base is primarily designed for the Henry lever-action rifles, such as the H001, H002, H003, and H006 series, but it may not be directly compatible with the Henry Single Shot rifles, as their design and mounting systems may differ.
For the Henry Single Shot rifles, including the .357 Magnum version, you would typically need a scope base designed specifically for that model.
To stay on safe side contact Henry customer service to confirm whether the Scope Base 2nd Generation will fit your model, also, check your rifle's receiver to see if it has the necessary mounting points for the base.
Hope this helps Les and may you and your family have a wonderful Happy Holidays!!