I've begun loading some Tungsten shot pellets in my 12ga for sandhill cranes. Dropped one yesterday at 95yds with a 1 7/8oz load of #5s.
The density of lead is about 11gr/cc.
This TSS shot weighs 18g/cc. Heavy as gold and platinum.
I've tried to get some in single 0 buckshot. Or 00 buck. It would be the ultimate brown bear self defense load.
Tungsten is hard and will not deform under recoil, or upon impact with bone. I shoot 50% of my #5 pellets inti a 30" diameter circle at
100yds. That's no typo. 50% @ 100yds. That's how round the pellets are and how true they fly.
One pellet of tungsten single 0 buckshot weighs 78gr.
One pellet of tungsten double 00 buckshot weighs 85.7gr.
One pellet of lead 000 buckshot weighs 68gr, based on the data I collected.
AKDFG has penetration tested 00 lead buckshot on brown bear skulls at like 25yds. It failed to penetrate the skull on a frontal shot.
My supplier could order some, but si far has been unwilling. Tungsten pellets cost about $55/lb. My reloads cost me about $7/shell.