Because I can take the shot with a pliers and crush it like mush. If I take some Lawrence copper plated magnum shot that I reload I can hardly crush it at all in the pliers.
Plating doesn't "harden" shot and much of todays copper plating is a copper wash, not true plating anyway.
There's a difference.
These Remington "Premier Pheasant" loads are a few years old and I don't think they are on the market anymore. I bought a bunch at Fleet Farm for $9.99/box. They are not the current the current "copper plated" "Nitro" loads. Just wondering if anyone has tried these newer Nitro's and/or know that they have true hard shot, how they perform, etc. Some of the cheap bargain loads claim to have hard shot, but they are NOT using quality hard shot.
Not trying to be combative or a know-it-all, just want to hear from someone who has some experience with these loads.
The plating of shot, whether copper or nickel adds nothing to hardness. In every case the plating is less than .001" thick, and usually less than .0001" It's a sales gimmick, nothing more.
Some shot is alloyed with tin or antimony, which does make it harder than pure lead, but you'll be hard pressed to know which is which. The claims of "hard shot", "magnum shot", etc are, just like plated shot, nothing more than advertising claims.
The theory of shot distortion causing poor patterns due to shot deformation may have had some validity back in the days of high-button shoes, but since the advent of polyethylene shot cups (1960s), shot deformation is a non issue.
Other claims like "nitro" are just sales gimmicks too. ALL smokeless powder is "nitro". "High velocity"? What's that? It's meaningless unless the actual velocity is stated.
Old wive's tales and urban legends continue forever.
You can easily prove the truth for yourself. Get some 48" wide butcher paper and a piece of plywood, and shoot some patterns at 30 or 40 measured yards. Pattern some "cheapo" $7 shells and some "premium" $15 shells of the same shot size and weight, and compare the results. I can promise you that you will not be able to tell them apart.