How much velocity do you lose with the 18" in the wsm, mine is a 24" and have been thinking of having it taken down to 20". It might improve accuracy also as it's not doing the best with 20gr or 25gr.
I've never put the Magneto on it, but I need to do that.
I'll bring it along the next time I head out and see how it performs...and then I'll post back here.
