Nomadic Pirate, muzzle velocity, is 1,050fps, and 901 at a hundred yds.  Be very careful with the soda bottle, and duct tape.  It is illegal to manufacture, or be in possesion of a homemade suppressor.  

 You can buy them, but you cannot manufacture them, without a class 3 license.  You can purchase them, plus a $200.00 tax stamp fee, after a background check.  There are different ways to apply for them.  I used the revocable one party living trust.  

 You have to purchase a new stamp for each additional suppressor.  But if you do decide to take the risk, and use the plastic soda bottle, and duct tape, a bolt action is better. 
 
                                                                      Wayne