A little late to the party and a little off subject...I have a 77/44 that would not shoot under 2.5"@100 until I tried BB 270gr. Speer gold dots...they clock exactly 1800fps. and shoot to 1.25"@100yds....very good enough for me crawling around under the hemlocks here in PA...same snot as a 3" mag. 20ga. slug.....regards.....bearit....
