gunDriller
16th January 2016, 06:47 AM
It's becoming PRETTY DAMN CLEAR that a 16" 5.56 and a 24" 5.56 are 2 completely different rifles.
Same for 20" 308 and 24" 308. The over-powering of the rifle by the bullet was most obvious for me with the 20 inch 308. Major recoil - I grabbed a bag of sunflower seeds after about 20 rounds and let the rifle stock slam against that, because I was flinching in anticipation of the recoil and I knew that would affect my aim.
Also, WAAY louder - the short barrel 5.56 & 308, that is.
I loaded new bullets with 2.5 cc of powder instead of 2.8, the standard Lee volume measure for 308.
Worked MUCH better - in the shorter barrel. That works out to about an 89% load.
Long story short, the different barrel length rifles end up with 2 completely different sets of bullets.
So I wonder - why don't the ammo companies sell bullets that are tailored to specific length barrels ?
It wouldn't make sense for some of the less popular ammo, e.g. 45 Bushmaster.
But for the 5.56 - there are millions of AR15's out there, and most of them have SHORT barrels - but are using ammo loaded for a 24 inch barrel.
Anyway, the first possible answer, "not enough customer base" - would not apply for the 5.56.
I think one of the main reasons is, rifle owners want a "full load". If they bought a reduced load bullet (other than subsonic), they might want a significant discount - which is not super-practical. The gun-powder savings on the reduced load is a penny or less, and there would be some extra cost associated with having to design, manufacture, and market a different bullet.
But - what about the 300 Blackout ? Very popular - I do see other people shooting them, and it has a reduced load and shoots well with a 16 inch barrel. And the Ammo is EXPENSIVE - 90 cents a round for a round with a 110 grain bullet, when it's on sale. About 60 cents for heavier bullets.
So, I think there is a NEED for reduced load bullets - but very little demand, head-on.
I guess - Loud with a BIG recoil sells ?
And the way gun marketing works, a reduced load bullet sells better when it comes with a WHOLE NEW caliber - at least that's the way it worked with 5.56 & 300 Blackout. (300 BLK runs on the 5.56 lower, it just has a different upper. Even uses the same bolt.)
Same for 20" 308 and 24" 308. The over-powering of the rifle by the bullet was most obvious for me with the 20 inch 308. Major recoil - I grabbed a bag of sunflower seeds after about 20 rounds and let the rifle stock slam against that, because I was flinching in anticipation of the recoil and I knew that would affect my aim.
Also, WAAY louder - the short barrel 5.56 & 308, that is.
I loaded new bullets with 2.5 cc of powder instead of 2.8, the standard Lee volume measure for 308.
Worked MUCH better - in the shorter barrel. That works out to about an 89% load.
Long story short, the different barrel length rifles end up with 2 completely different sets of bullets.
So I wonder - why don't the ammo companies sell bullets that are tailored to specific length barrels ?
It wouldn't make sense for some of the less popular ammo, e.g. 45 Bushmaster.
But for the 5.56 - there are millions of AR15's out there, and most of them have SHORT barrels - but are using ammo loaded for a 24 inch barrel.
Anyway, the first possible answer, "not enough customer base" - would not apply for the 5.56.
I think one of the main reasons is, rifle owners want a "full load". If they bought a reduced load bullet (other than subsonic), they might want a significant discount - which is not super-practical. The gun-powder savings on the reduced load is a penny or less, and there would be some extra cost associated with having to design, manufacture, and market a different bullet.
But - what about the 300 Blackout ? Very popular - I do see other people shooting them, and it has a reduced load and shoots well with a 16 inch barrel. And the Ammo is EXPENSIVE - 90 cents a round for a round with a 110 grain bullet, when it's on sale. About 60 cents for heavier bullets.
So, I think there is a NEED for reduced load bullets - but very little demand, head-on.
I guess - Loud with a BIG recoil sells ?
And the way gun marketing works, a reduced load bullet sells better when it comes with a WHOLE NEW caliber - at least that's the way it worked with 5.56 & 300 Blackout. (300 BLK runs on the 5.56 lower, it just has a different upper. Even uses the same bolt.)