All the info on here says to drive them out from left to right.

On this bbl it looks like the left head is bigger than the right.  

right side



left side


So these should be driven right to left, correct?

Correct.  Brace the FSB, use a punch, and hit them hard.  Light tapping results in a mushroomed pinhead.  I have had a few that had pins coming from each direction...

Quoted: Correct.  Brace the FSB, use a punch, and hit them hard.  Light tapping results in a mushroomed pinhead.  I have had a few that had pins coming from each direction...

I've got a punch ordered from Brownell's.  I tried using a nail setter- finally decided to quit & wait on the punch.

I did smack 'em rather hard w/ a 22oz hammer & the suckers did not budge.  I may have to get a *BFH* & wail on the pin heads.

Soak them with a penetrating oil, then hit them with a BFH.
A nail punch should work fine. Solidly support the fsb as Stickman said.

The crown is seen on a lot of barrels, so it cannot be limited to any one manufacturer.

Personally, I use an oversized, standard flat tipped punch and the BMFingH to get the pins started.  Then I move to the proper sized punch to drive them out.  IMO, a small punch has the possibility of slipping off and dinging your FSB.  Not that I give a rat's ass, but when you work on other people's stuff, they might have different priorities.  IMO, a large punch has no chance of slipping off of the taper pin, or at least that's been my experience.