Originally Posted by RickBin
Familiar with KPY shotgun ballistics program?

Real quick:
1300 fps
1 1/4 oz shot charge


Chilled lead #4 (167 pellets)

@ 60 yards:

Final Vel: 582
Energy (ft/lbs): 2.45
Energy Density (ft / lbs /sq in): 184.8
Gel Penetration: 1.72


TSS #9 (447 pellets)

@ 60 yards:

Final Vel: 577
Energy (ft/lbs): 0.90
Energy Density (ft / lbs /sq in): 179.6
Gel Penetration: 1.67


Contemplating these numbers will lead you down all sorts of paths regarding the relative merits of TSS. You can make of these what you'd like, but here is one take:

Individual #9 TSS and #4 chilled lead pellets are as above @ 60 yards in terms of lethality. The density of TSS allows you to have 267% more pellets per shot charge, or to shoot lighter/faster charges (increasing energy), or both, or duplexing with steel loads, or, or or ..



As you stated foot pounds of energy with a lead #4 pellet is alot greater...not sure how they came up.with "energy density" ?

If it comes down to one pellet killing the turkey my money is riding on a #4 copper plated lesd

One thing TSS offers for sure is alot more shot to pick out of the meat should your aim get off....

Some guys claim total penetration with TSS....guys with cracked teeth will argue differently.

Ps...I'm shooting a 2 oz load of #4s.