With all the praise for lighter loads I am going to try some 1 oz 8's. I only have red dot powder. Will use Clay Buster CB1100 wad, STS hull and Win 209 primer. My question is 16.5,17.5 or 18.5 grs of Red Dot? Will use on 16's and 1st shot on dubs.
I could not find a recipe that combo. With the Rem 209 and 16.5gr of Red Dot, you're getting out there at 1150fps @7400psi, 17.8 gets you up to 1200fps @8000psi, both well within limits. I don't know what difference you will find with the Win209 primer.
I called Alliant awhile back, asking them about using primers other than what a specific recipe called for. Their answer was, you can interchange any of the popular primers, Rem, Win, Fiochhi, Cheditte, etc. Yet, pressure tests with same components, changing primers only, reveal pressure difference exceeding 2,000psi.
That's fine i suppose, if you are loading well below the limits. I would stay with well established recipes and play it safe.
Used to use almost the same components. 16.5 grains 700x (about the same on the charts), windjammer 1 ounce 8 pedal wads, win 209's and STS hulls. 1165 FPS and about 6500 psi and smokes targets with a full choke for 16's (I shoot a fixed choke LH 1100). I use Improved Mod on the first shot and light full on the second shot for doubles (Browning Special Trap Edition). My only difference now is I use Cheddite primers with the same results. The Windjammer wads are slicker and faster and pattern great. A whole lot less recoil and very consistent. Good shooting.
Any 1 ounce recipe that you follow for 1100-1150 will give you superior performance simply because the lessened recoil is easier on your mind. Shoot one ounce 8s 1100-1150 fps for singles and figure out what you want to do for handicap. That will vary depending on where you stand. Another subject entirely.
And too, I think my Chrono is one of my best trapshooting investments.