Re: Hush puppy
How to say this and keep us all on a positive path here?
9mm cans on automatics are anything other than a "non-functional part of the gun" good ones most certainly do have moving parts. Those moving parts, in many exellent designs will most certainly need to be user serviced, they will need to be cleaned, lubed and in many instances springs will need to be eventually replaced. There is more. Great 9mm suppressor cans can serve a vast majority of autos including some some that the experts swear no can will function on. On static barreled weapons, provisions should be made to provide the means to eliminate these very same moving parts, and do so quickly and take additional heat.
Lethality can most certainly be effected by a suppressor. Some suppressors effect velocity to the point where not only is distance obtainable and POI shift effected but penetration is as well. In manner instances a reduction in penetration equates a significant change in lethality.
Suppression is certainly "in the ear of the beholder" but one must look at sound reduction throughout the heating cycle, first round pop, throughout the servieable life, when running wet or dry. It is not 10 people making up their mind about it, but rather a great suppressor is tested in many different scenarios before making a decision.
Accuracy can be effected and is, in many brands, effected on pistols. Anybody that buys a suppressor that has POI shift of 4" at 100 yards for a precision rifle can has some explaining to do. For pistols it is much more important as the effects of parasitic baffle drag, expansion chamber disreuption, symetric or asymetric baffle design all come into play and can make a big difference in not only accuracy, but also sound suppression, heat retention, powder waste removal (either manually or through blow out) and service life.
Materials are important, light weight materials are only a part of the solution as an example titanium can ring and ring badly in a suppressor, just paying for expensive light weight materials, or making the mistake of buying cheaper light weight materials can mean poor performance. Internal materials directly effect what chems, if any, can/should be used when cleaning. Some materials cannot be welded to others well, some materials pit badly under pressure and heat.
As to "barrel harmonics," on a pistol harmonics can be crucially effected by a suppressor. Muzzle suppressor less so, but barrel harmonics are greatly suppressed and accuracy palpably improved when proper torque in a integral designed suppressor barrel is used. POI shift is rarely effected by threading misalignments, baffle hits are! Precision pathing requires tight tolerances (these cans rarely disassemble and if they do are in most instances monolithic.) Heavy steel autos can act very differently than poly/steel autos, weak hand, light hands, strong hand can all effect cycle performance on some cans. Other makers with poor, early Neilson devices over compenstate to insure cycling and that translates to much great wear and tear on autos (especially polys.)
Lets add to your list:
1. Ability to use wide ranges of simular caliber but higher velocity rounds and produce excellent suppression.
2. Performance when using small cartridges through the same can.
3. Ability to be used wet or dry and the performance.
4. Ability to be used on full auto weapons.
5. Ability to be covered by any warrenty, be returned 5, 10, 15 years from now to a viable company.
6. Ability to be upgraded to newest standards.
7. Quality of construction as it relates to welds, lack of welds.
8 Ability to swap out various threadings to allow for wide and varied use.
9. Ability to go "static" for fixed barrel weapons.
10. and on and on and on....