rpm: I had the same situation as you.
I removed the ejector springs on two Browning Superposeds and one Browning 325, as I reload and really don't need ejector guns.
I had the same problem of low hull extraction and difficulty in grabbing onto the hulls to remove them.
I read on another BBS where a gent decided to replace his Browning Superposed factory ejector springs with the Colt 1911 (auto pistol) firing pin return spring. This Colt spring had sufficient power to kick the fired hulls about a bit less than an inch up out of the chambers...which allowed him to easily grasp the fired hulls.
I can tell you this ejector spring replacement works well in my Superposeds and my Browning 325...all in 12 GA. I'm an "occasional" user of these shotguns, and have used each only several times since ejector spring replacement. How the springs will last /hold up during volume firing is not yet known. My oldie SxSs see more daylight than my O/Us.
Offered FWIW.