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Nah, rem mag hoses it :)

The only reason a wsm surprises is the extra inch of rifling the short cartridge gives you, which translates into extra velocity, great in shorter barrels.

For example...

Some BB brass has a large head outside diameter and because of that it cant expand as much in a saami chamber (and loosen primer pockets)

Some confuse the tight primers with acceptable pressure...

What do you like about Bruces brass ?