Ok, you appear to be sincerely interested in where you went wrong so lets go one more round here. I'll call it as I see it here, yes, unquestionably, you do not understand the fundamentals of ballistics and, as a result, you are..indeed your thinking about ballistics is "fundamentally wrong." It takes time to write these out, so recognize that somebody is really trying to help you learn something at the Firing Line.
The issue you have to really consider in the AUG is the twist rate of the barrel. I mentioned it in my first response to you. The fact that selected "LE223T3 (62gr)" for "looong" range shooting told me and "TheManHimself" alot about who you were and what you did not know about what you thought you were doing.
If you really like your AUG and want to get the most out of it you will need to memorize the twist rate and, from now on, only use the right bullets for that twist rate. So having said that...what is you twist rate? Go ahead and look back at the first page. Right, your twist rate is 1:9. Remember that one thing and all this writing was worth it. 1:9
As "TheManHimself" put it....
"the 1:9" twist rate of the AUG barrel is going to prevent use of the heaviest bullets typically preferred for long range (>500m) shooting. 1:9" barrels will handle bullets up to 69gr well; you can try 75gr and 77gr bullets, which may stabilize out of your barrel and may not, and even if they do may not shoot accurately; 80gr and up bullets will not stabilize at all."
Your selected round? the "LE223T3 (62gr)". So, is that a heavy bullet? No, it is a very light bullet. Is it going to be good for long range work? No, it is too light and not stable enough at >500. Can your barrel stabilize a heavy bullet? No.
Can your barrel stabilize a heavy bullet? No. So then, given that, we begin:
"suppressor in CQC (indoors) is only helpful with subsonic ammo"
This is not true. Most operators that use a .223 and a suppressor do not use subsonic ammo. Key word "most". Most means in this case, a very great majority. A suppressor is not "only helpful subsonic ammo". The majority of suppressor are designed to be used with supersonic ammo. Some manufacturers will not warranty cans used with subsonic ammo. More on this later.
"subsonic ammo (heavy slow bullets) over penetrate"
Two things very wrong here. First, in .223 especially, subsonic ammo is unusual and, when it does work, it is not "heavy slow bullets" that make it work, but the powder charge reduction changes. Now, think about this, if it did depend on heavier bullets...what do we know about your twist rate? Does it handle heavy bullets well, let alone very heavy bullets? No. Would it make sense to use a suppressor on a 1:9 twist barrel with heavy subsonic bullets? No..What might happen is the unstabilized bullets might hit the cones/baffles and that is why many providers don’t want subsonic ammo used in some cans.
Second problem. No, slow heavy bullets do not over penetrate. Just the opposite, for the most part they do not penetrate, but rather, dissipate all their energy on target. This is especially the case with any subsonic ammo. By the way, what rounds are “naturally” closer to subsonic to begin with? Answer that and you will find the most popular rounds to suppress with a can.
"The shorter barrel is stiffer and more accurate"
It is neither. The length difference is too nominal to matter for stiffness here.
Lastly, do you really believe the longer barrel is less accurate? Of course you don’t.
What really matters about your barrel choice when it comes to accuracy? Right! Barrel twist and Bullet match!
"The influence on bullet speed was my interest"
Bullet speed? Do you really think that an extra inch is going to matter when the twist/bullet match is wrong? No, of course you don’t. You don’t mean bullet speed, you mean velocity and in the case of accuracy your issue is? 1:9
Now, the statement made by “Stubbicat”
“How far is "long range" for you? There are better choices for distance shooting than the bullpup, IMO.”
Bullpup are just as accurate as any other platform if?
Right! The right barrel, the right action, the right twist, the right bullet and the right marksman.
This bullpup rifle does 4” at 1,000 yards
http://www.deserttacticalarms.com/
Or, my own rifle in this one.
http://en.wikipedia.org/wiki/AWC_G2
Do they look like your bullpup? No, they are not short/medium range weapons.
Where does this all leave you? Stop guessing, start studying. Read read read read read. 90% of forum thread work is marginal.
Read book on ballistics, subscribe to Precision Shooting (Lord, would you like that magazine and would it help!)
A question for you.
There are at least two issues in suppressing the noise signature of a bullet, one is accounted for (for the most part) with the can, what is that and what is the other issue? For the "other" one, who would need that "signature" issue dealt with and how would they accomplish the task?
Best
The issue you have to really consider in the AUG is the twist rate of the barrel. I mentioned it in my first response to you. The fact that selected "LE223T3 (62gr)" for "looong" range shooting told me and "TheManHimself" alot about who you were and what you did not know about what you thought you were doing.
If you really like your AUG and want to get the most out of it you will need to memorize the twist rate and, from now on, only use the right bullets for that twist rate. So having said that...what is you twist rate? Go ahead and look back at the first page. Right, your twist rate is 1:9. Remember that one thing and all this writing was worth it. 1:9
As "TheManHimself" put it....
"the 1:9" twist rate of the AUG barrel is going to prevent use of the heaviest bullets typically preferred for long range (>500m) shooting. 1:9" barrels will handle bullets up to 69gr well; you can try 75gr and 77gr bullets, which may stabilize out of your barrel and may not, and even if they do may not shoot accurately; 80gr and up bullets will not stabilize at all."
Your selected round? the "LE223T3 (62gr)". So, is that a heavy bullet? No, it is a very light bullet. Is it going to be good for long range work? No, it is too light and not stable enough at >500. Can your barrel stabilize a heavy bullet? No.
Can your barrel stabilize a heavy bullet? No. So then, given that, we begin:
"suppressor in CQC (indoors) is only helpful with subsonic ammo"
This is not true. Most operators that use a .223 and a suppressor do not use subsonic ammo. Key word "most". Most means in this case, a very great majority. A suppressor is not "only helpful subsonic ammo". The majority of suppressor are designed to be used with supersonic ammo. Some manufacturers will not warranty cans used with subsonic ammo. More on this later.
"subsonic ammo (heavy slow bullets) over penetrate"
Two things very wrong here. First, in .223 especially, subsonic ammo is unusual and, when it does work, it is not "heavy slow bullets" that make it work, but the powder charge reduction changes. Now, think about this, if it did depend on heavier bullets...what do we know about your twist rate? Does it handle heavy bullets well, let alone very heavy bullets? No. Would it make sense to use a suppressor on a 1:9 twist barrel with heavy subsonic bullets? No..What might happen is the unstabilized bullets might hit the cones/baffles and that is why many providers don’t want subsonic ammo used in some cans.
Second problem. No, slow heavy bullets do not over penetrate. Just the opposite, for the most part they do not penetrate, but rather, dissipate all their energy on target. This is especially the case with any subsonic ammo. By the way, what rounds are “naturally” closer to subsonic to begin with? Answer that and you will find the most popular rounds to suppress with a can.
"The shorter barrel is stiffer and more accurate"
It is neither. The length difference is too nominal to matter for stiffness here.
Lastly, do you really believe the longer barrel is less accurate? Of course you don’t.
What really matters about your barrel choice when it comes to accuracy? Right! Barrel twist and Bullet match!
"The influence on bullet speed was my interest"
Bullet speed? Do you really think that an extra inch is going to matter when the twist/bullet match is wrong? No, of course you don’t. You don’t mean bullet speed, you mean velocity and in the case of accuracy your issue is? 1:9
Now, the statement made by “Stubbicat”
“How far is "long range" for you? There are better choices for distance shooting than the bullpup, IMO.”
Bullpup are just as accurate as any other platform if?
Right! The right barrel, the right action, the right twist, the right bullet and the right marksman.
This bullpup rifle does 4” at 1,000 yards
http://www.deserttacticalarms.com/
Or, my own rifle in this one.
http://en.wikipedia.org/wiki/AWC_G2
Do they look like your bullpup? No, they are not short/medium range weapons.
Where does this all leave you? Stop guessing, start studying. Read read read read read. 90% of forum thread work is marginal.
Read book on ballistics, subscribe to Precision Shooting (Lord, would you like that magazine and would it help!)
A question for you.
There are at least two issues in suppressing the noise signature of a bullet, one is accounted for (for the most part) with the can, what is that and what is the other issue? For the "other" one, who would need that "signature" issue dealt with and how would they accomplish the task?
Best
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