Brute

The 700ML has a "vented" primer pocket and that is your problem.

If you read the back of the BH container it will explain the different type of breech plugs/primer pocket types. Not sure what the fix is for this. Maybe someone here will have a suggestion.

Otherwise, two Pyrodex pellets and a Barnes MZ expander worked very well for me.

WN

'Tis far better to walk alone than to follow a crowd going the wrong way.