The ammunition with the Holland and Holland headstamp was made by Jim Bell in the late 1980's (88-89)_ for development of Bill Feldsteins initial rifle.

Much of that ammo had the bullet seated below the cannelure and a cruciform stab crimp was applied in line with the cannelure groove, similar to that seen on the original Eley and Kynoch cartridges.

The brass utilised regular LR primers (Fed #215) and with heavy loads hang fires were sometimes encountered.

Both Romey ( who loads for Westely Richards and David Little who runs Kynamco (Kynoch) have opted for the more sensible approach witrh such a large capacity case and opted for BMG primers.

Some of the very first rounds came loaded with a homogenous bullet, although as to who made thaty bullet I have never actually found out, perhaps someone onthe forum may have this info.

Hollands still have a fair amount of the Bell loaded ammo in stock, although apart from selling the odd round to collectors, they do seem to favour supplying ammo to owners of their own manufactured rifles.

Good luck with the rifle however, if you get the chance post some of your results