Reply To: Varying pellet speed and accuracy.
There are so many variants that can cause this, but at 15m it should be really accurate. Target shooting is a bit like Zen Archery. You need to focus and be aware of everything you do. Place your cheek in the exact same spot, shoot at the same breath cycle, monitor your trigger control and follow throughs etc. Then you can look at your gun. What pressure do you always fill it to. What is the Batch & Die number on the tin? What is the pellet Head Size? Record the shot string (I use the iPhone app “Shot Buddy” to do this). Shoot through a chrono and record fps etc. are you using an aftermarket silencer? Does it group like this without the silencer on?