Is it legal to shoot silhouette with a barrel tuner

Yes for the standard rifle. No for the hunter rifle.

Thx

Which do u suggest i buy my tuner from

I had a gunsmith make one for my bloop tube and it works fine. You only need something less than an inch of travel for the weight and locking nut. I also bought one from some outfit back in New England (don't remember the name) for about $100 and it is a nice one. You don't need to thread your bbl because it clamps on.

I buy ammo that shoots well in my hunter and tune the standard gun to shoot the same stuff. You can open and close your group more than 1/2 inch at 100m.