Powder

[10 bore]

Originally Posted by Bill Murphy

Herco is way on the slow side for light 12 gauge target loads, but will probably be OK for the 20 except in the dead of winter. Anyone with questions should consult "burning rate charts" for suggestions and information.

Win.AA hull. 1.125 oz shot, win209 primer, WAA12 wad,25 grs of herco, 1250 fps at 9500 psi. There are more loads and different components for herco. This one is from there web site.
Scott

[Bill Murphy]

That load is fine if you want to pump up to 1250 fps. Most shooters of clay targets don't want to shoot 1250 fps. At 1 1/8 ounces, 1250 fps is a punishing load, more like a pigeon load. High recoil, more velocity than required.

[10 bore]

yes i get that, i wouldnt shoot 1 1/8 oz 12 ga or 1 oz 20 ga loads, way too heavy for me. by asking for loads like that i didnt think he was too concerned about FPS. standard trap load is 1140 to 1150 so back off 1 to 2 grs and should fall wright into 1140 or a little less. imho , (test the loads before you shoot them)