Help with patterning new gun

[Mr. Hawk]

Just got me a Franchi affinity 3 20ga and a tru loc turkey choke. I intstalled a new FFIiii and took it to the range to sight in/ pattern yesterday. I set up at 15 yds initially and after a couple shots with cheap target grade federal 7 1/2 shot I had it hitting in my circle with tons of pellets. When I moved it back to 35yds the pattern was huge, only a few shots in a 10" circle. Is this the cheap ammo, choke, what? I haven't gotten my tss in yet.

[RemingtonRules]

Ammo

[nyhunter]

what ammo are you using? what constriction is your Tru loc choke?

[owlhoot]

Ammo

Agree with that.The loads you have are not designed in any way for down range performance .
The wads used are probably the main reason, powder used probably don't help, 7 1/2 lead light charge won't help down range. Wait for some turkey loads for testing that choke and 40yards imo.

[dirt road ninja]

At longer ranges with cheap bird shot I shoot 3 rounds to establish poi