I have a Hawkins BDL bottom metal (non-M5 version) on a Defiance Anti Long Action with a Wyatts box. There is a relief cut at the back of the Wyatts box that allows it to sit on the regular Hawkins BDL bottom metal (Box came this way, wasn’t modified). Everything bolts up great and feeding is not an issue. I used a proof pre-fit and put it together myself too.
I had originally used a regular length box (I don’t reload, so length isn’t needed) but there is a ton of extra room in the magwell behind the box. Swapped out for the Wyatts and it fills the magwell much better.
