A light-weight grease like TW25B is good for this. When this spot is thoroughly greased It is really excellent for 1000s of cycles. Regarding the results of rounded rifling on accuracy, the rifling adds an angular velocity to a bullet so working with abrasives close to the muzzle will https://telc74726.theisblog.com/36284940/5-simple-techniques-for-telc考试报名