Jim, I can lift the LE No. 5 bolt a bit and it´ll then fit the slot with the flap closure still ok. But why would anyone want to have a rifle in the bucket with a half open bolt (unless it was meant as a safety measure). The bucket could be for the Henry.
Breakyp: Germanywas never fond of cavalry rifle scabbards. `Twas purchased as "for an Enfield" but that´s no guarantee.