First we need to look at the reason for the origin of TSS, because it was the banning of lead for the use of waterfowl combined with the ineffectiveness of the replacement steel shot. This legislation brought a few major breakthroughs in the shotgun community. First was the 3.5" magnum shotgun first made commercially available in the Benelli Super Black Eagle. Second was the advancement of materials used in waterfowling ammunition. This came in the form of steel blended with other non-toxic metals like bismuth and eventually TSS.
The density of the TSS (18 g/cc) is much greater than even lead (11 g/cc) and this took the waterfowl ammo industry in the exact opposite direction that steel and bismuth did. Instead of needing one or two sizes larger shot compared to what was commonly used for lead, now they could go much smaller, have more pellets and (arguably) be more lethal on birds.
Example with chart inserted below...
Typical lead load for goose was #2 shot when it was legal
Then the normal steel load for goose became B or BB or even BBB
TSS load for goose is 7 or 7.5 shot from Federal and Apex
There is no doubt that TSS has performed well in the laboratory and the field. Although not safe for use in all shotguns due to some of the materials used in the past, all modern shotguns with proper chokes can enjoy the advantages of TSS. The only sticking point is cost, and it's a big point. In some cases TSS ammo can be 3x more expensive than steel and 2x the price of steel/bismuth blends. The argument comes when a waterfowl hunter uses one shot of TSS ammo to down a bird vs using 2 or 3 shots of steel.
So now let's try to extrapolate this to hunting something other than waterfowl. What size would one consider for such an undertaking? Goose loads went from #2 lead to #7.5 TSS...so buckshot could theoretically go from 00 down to FF? Maybe all the way down to BB or B? That could be a debate...
A quick search revealed that finding TSS pellets in a size larger than BB (.180") is not easy. What I did find (on Amazon of all places) is #6 shot (.110") being labeled as "buckshot", which I thought was a little amusing.
The bottom line is that there
is no ban on lead where there is leopard hunting so this entire post is for naught. Not to mention the increase in cost. Thanks for reading and you can now go back to debating CRF vs PF.
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