George phoned me a number of years back knowing I had some 28 ga O/Us. He came over to take measurments of everything and went on to produce some in 28.
One of the most unique firearms you'd ever lay your hands upon.
My short answer is no. Tungsten will not make a turkey deaderer than lead/copper plated lead. Spend the money if you wish but I feel it's just more fashion ammo.
My custom 358 Norma 26" bbl prefers 73 gr IMR 4350 pushing a 250 Nosler partition at right about 2800fps. Pleasant to shoot and have zeroed at 250, 4" high at 150 and ~18" drop at 400. Has tipped a couple elk over at ~400, dead.
Fine round indeed.
My self procliamed Northwest Slam completed again. Plus 8 yo Grandson Charlie's first bird.
https://photos.google.com/photo/AF1QipOaigjFJcRkwrX7KC-U7b5atLnUm0ab0A1d_jXG
https://photos.google.com/photo/AF1QipPLYl18Df3nlWt8h5LZeh_giLvCpvOxtGsX6_2k...