Shot my A300 with Winchester Long Beard #9 TSS today. 364 pellets in 10 inches at 40 yards. One more slight adjustment to the right and it should be close to 400. I'll take that.
Patterned my A300 Today
- Thread starter nso123
- Start date
Man that's crazy tight 
Ditto! Maybe okay if you never shoot under 40 yards, and your shots are 40-60 yards, but you better keep your cheek weld tight on the comb of the stock.Man that's crazy tight
OP - do yourself a favor and strive for 225-250 pellets uniformly distributed in 0-10" circle and same in the 10-20" circle. TSS does not have to be choked like lead or HTL pellets. In fact, over restriction will blow the patten if you choke it just a tad too tight.
For patterning, and seeing majority of the pellets on paper, buy some painter's paper at Home Dept/Lowes so you can see your entire pattern. Link below.
36 inch painter's paper
Good luck!
