Hi Douglas and welcome:) I have AG's the love the Beeman FTS I have tried the fts gold and not noticed any difference although I think nicer looking. IMO the Beeman FTS is my favorite. Beeman FTS are in the pricey pellet group that's for sure, some AG's like coal and some like diamonds:) I enjoy finding what pellets works best for each AG experimenting , using chrony it is part of the fun to me:)
At times I will weigh pellets and group them together in same weights, I have even wash pellets in dish wash liquid and sprayed with pledge in an effort to shoot the perfect target and in some cases makes a big difference. What I do know is that I only clean my barrel if accuracy changes on an AG and I use goo gone and a cloth patch .. never use wire or brass as it can mess up a good AG.
FYI "Some regular pellets" I have found to be good and uniform straight from the tin/box IMO...are the Beeman FTS plain / double gold, rws meisterkugeln and Hobby wads, jsb exacts, crossman CP 7.9gr and the 10.5gr, the new H&N FTS seem good so far not fully tested them yet, Benjamin .177 and .22 are good but i have to wash and pledge em:) As for lubed pellets I have not seen improvement in fact I think it could effect FPS variation? I think uniform snug fitting non dirty lead pellet is the way to go. Glad you found the GTA and Good luck with your future air gunning . Tony.