I think it was just a name-change as well. I used to use Winchester Ball powders many years ago, and the 473AA was basically the same as Super Field. Just got rid of the numbering, and stayed with either "Target" or "Field" loads. Fine ball powders made for a real mess !!!
Thanks guys, I'll still go by the loading manual but it does sound like maybe 452 was just renamed. How does 19.0 grs with 1 1/8 oz sound? That is a touch under the 19.5 recommended for 1145 fps. Roger
452AA was/is a small ball, WST is a flat flake. I used 452AA in my 45 for bullseye loads and it gave me the best group sizes of any powder, these results are from a Ransom rest.When WST came out I did extensive testing and sold off all my 452AA. 5.0 grains WST, Nosler 185 jacketed HP, winchester primer, 1.24 OAL is the most accurate 50 yd load I found. With lead wad I use 3.8 of WST and it is dirty but the 50 yd load is clean, higher the pressure the cleaner WST burns. Tom Ginovsky