most likely your .17 caliber has a Twist of 10" & Bore diameter of .168" plus a Groove diameter of .172"
.177 air rifle dimensions are Twist: 17.7" & Bore diameter: .176" & Groove diameter: .182,
as you can see they are different
most likely your .17 caliber has a Twist of 10" & Bore diameter of .168" plus a Groove diameter of .172"
.177 air rifle dimensions are Twist: 17.7" & Bore diameter: .176" & Groove diameter: .182,
as you can see they are different