Vaya por delante que NO soy ningún especialista en la materia y no quiero poner en duda nada de ninguna munición y menos de Hornady que me fascina esa munición.
Además a mí me encanta Hornady y tiro todo con ellas (270w, 444, 44) desde hace ya más de 10 años.
De esta soberbia explicación que hacen en este link,( de la cual los americanos son muy buenos en prevenir,explicando todo tipo de detalles y posibles consecuencias a veces con demasiado detalle...) yo entiendo que la pólvora que utilizan en la munición Superformance (que es una de ellas, pues no la utilizan en todas las que fabrican) puede llegar a producir algún tipo de aviso por sobrepresión, pues el combinar "el empujar la bala y abrir el cerrojo para expulsar la vaina" lo pueden llegar a realizar demasiado rápida y simultáneamente, ( y eso puede provocar daños en el arma..lo que ellos llaman "pressure signs") eso es lo que entiendo, pero puede tener solución si se toca la toma de gases...(cosa que yo no se hacer)
https://www.hornady.com/support/superfo ... d-firearmsINTERNAL BALLISTICS OF SUPERFORMANCE IN SEMI-AUTO / SELECT FIRE GUNS
Superformance ammunition is tested and is safely within SAAMI pressure guidelines. Gas operated (direct impingement or gas piston) firearms are perfectly safe to use with Superformance ammunition. However, Hornady ballisticians have conducted testing with a variety of guns (including guns equipped with suppressors),
and our findings conclude that some systems work far better with Superformance ammunition than others.It is recommended that
to get the best functioning with Superformance ammunition in gas operated/gas piston semi-automatic or select fire guns, rifle length gas systems with 20 inch or longer barrel lengths are best for reliable firing and extraction. Any other configuration, particularly shorter barrels/gas systems are best served with the installation of an adjustable gas system, ESPECIALLY if a suppressor is to be installed.
Due to the longer duration of peak pressure produced by Superformance™, the post peak/declining port pressure at common carbine and mid-length gas port locations is still higher than that produced by standard propellant. This has a tendency to flood the system with a larger volume of gas, at a higher velocity, that tries to open the bolt of the gun too fast. It’s a timing issue. The cartridge case is still swollen from the application of pressure during firing while the gun is simultaneously trying to extract the cartridge case before it has had an opportunity to settle back to its original size, or more simply:
the gun is still in the process or firing while it’s trying to extract the cartridge case.If the
firearm and the ammunition are not in sync, there can be what is commonly identified as “pressure signs” on the cartridge case. This is exhibited by the movement/marring of the head of the cartridge case, cratered primers, flat primers, ripped or ruptured cartridge cases, “popped primers”, and/or any combination of these effects. If any of these “pressure signs” are apparent, stop firing immediately. I
f an adjustable gas system is installed, it is advisable to reduce the amount of gas flowing through the system by closing the gas port until the gun operates correctly.
With the installation of an adjustable gas system, gas pressure can be metered to a point that enough gas is applied to open the bolt, but at
a slower rate to allow the cartridge case to return to its original diameter prior to the movement of the bolt, and thus allow for proper extraction.A lo mejor tocando a salida de gases del rifle se podría controlar y bajar el riesgo, pero yo lo desconozco...si alguien lo sabe hacer, es bienvenido y yo soy todo oídos.
Viva la caza!