Yes, forend in hand, hand on bag. No rear bag and sit as high as possible, not crouched down low.
I do my slug testing at 30yards, as that is my perceived absolute maximum range for bear defense.
Even at only 25 or 30 yards, a bear is not a direct enough threat (according to the game branch) to warrant shooting.
The Winchester 3" 1 ounce Fosters @ 1,750fps and the 2 3/4" 1 1/8ounce Gualandi DGS slugs @ 1,610fps both shoot into 2"(5 shots) at 30yards from my Mossy.