Could someone tell me the distances between the spacers in the 700 mm Superlight barrel of an FX Crown? I know the one closest to the muzzle is about 3 cm from the end, but I have no idea about the other two. Thx
No hard & fast spec which I know of. I normally space them equally apart in the final 1/2 or 2/3 of the liner, toward the muzzle end. No need to space them back further as the liner is fixed in place at the rear.
Some folks put a ring of tape on either side of the spacers so that when the shroud is pulled off they stay in their approximate location.
My mad scientist mind says maybe don't space them exactly the same ( like 1/8 inch difference) so you don't have equal resonant lengths to synchronize up and frustrate a harmonic tune.