I realize that in different guns at different ranges results will vary but I'm really just looking for a 'yes' or 'no' on whether the 21 showed significant accuracy improvement for those who have gone through testing both of these in any given setup. Trying to see if there's a consensus before I purchase several tins of 21 just to find out they aren't much or any better. I don't know if I want to sacrifice shot count to push the heavier pellet at the same speed. The 18s have treated me very well so far but if the Match 21 is significantly more accurate for most people then I can justify buying at least 4 tins to find out if they are much better in my own guns.