Firearm BS thread

Here is my final setup!

 

^^^Very nice!
I'd hate to be on the receiving end.

 

Not bad for a brand new gun with junk range ammo. Shot down and to the left like every other new Glock I've gotten.

 

Those will not produce less of a fireball.

 

But if thats a belly gun, all that fire ball goes in an assailant so theres that. Would That cauterize and stop the bleed?

 

And blind him to!

 

More likely it'd contaminate the wound with unburnt powder.

 

Are you tea cupping that thing for it to shoot like that?

Out of my 7 Glocks none of mine shoot low and left out of the box my experience has been just left or right until I get the sights right...

 

Nice so I see it doubles as a cigarette lighter/ flame thrower

 

So how much difference in accuracy between 6.5 24 inch and the .308 20 inch barrels would make a difference say @ 800/1000 yds?

 

For good quality barrels the length doesn't effect accuracy if the bullet is stabilized, so as far as the calibers having different length barrels that should not be a factor.

I'll let Smugly tell you about the difference in accuracy for 308 and 6.5, I have limited knowledge of the 6.5 but have read good things, I'm probably gonna end up building one.

 

The accuracy potential of both rifles isn't affected by the barrel length, but the 6.5 will have a much higher probability of hit than the 308. A 308 is not a good 1000yd cartridge by any means, not when there are so many better options easily available.

http://precisionrifleblog.com/2015/04/25/how-much-does-cartridge-matter/

 

Due to the much higher ballistic efficiency of the 6.5 it is going to out preform the 308 at distance.
Can the 308 preform at distance?
Yes, been there done that, busting clay birds at a grand with the 308 just requires an intimate knowledge of what happens in the wind.

30 cal 308-175gr SMK @2600fps in a 10mph full value wind has about 62" of drift

7mm 708-162gr BTHP @2700fps 10mph full vale wind has about 38" of drift

6.5mm 6.5Creed-140gr AMax @2800fps 10mph full value wind about 36.5" of drift

As the bullets get smaller the cross sectional density is decreased (less surface area to be affected by the wind)
Also bullets tend to get longer (long thin cross section bullets tend to stabilize quicker)
Note that as the dia decreases the velocity tends to increase (the less time inflight to the intended target the less time it is affected by the wind)

To get the 30cal to preform at distance similar to the 7mm - 6mm family you need speeeeeeeed
To get the speed you need a bigger boom.

30 cal 300WinMag-220gr BTHP @2850fps 10mph full value wind about 37.5" of drift

 

Obviously , you would think a longer barrel should improve accuracy ?????, but to be honest, there's just too many variables, to answer that question easily.

 

I hear a lot of people saying that barrel length doesn't affect accuracy, two that I call bullshit! Take something like a Nail and shoot it out of two different length tubes, and tell me which one is more accurate. in a most basic principle, that could very well be one of the reasons why the 6.5 Creedmoor is more accurate than the 308??????? Along with a bunch of other shit!
The decision of the optimum barrel Length is determined by the manufacture via several conditions, weight grain of a load to burn ratios of the powders their using and so on

 

A longer barrel will help with velocity, however there is a diminishing convergence, 22"-26" tends to be the sweet spot for 308s.
When your tuning yer hand loads you're typically looking to have the powder burned up right at the muzzle, slightly before or after will work also.
The bullet is being affected by the increase in pressure while in the barrel, burn the powder up too early your not going to build velocity the full length (subsonic is a different story)
Too much powder is going to continue burning after the bullet has left, there is no more area to build pressure, it's a waste of powder and you create a muzzle flash that can be seen for miles, not good when trying to maintain concealment.

 

And vice versa, too long of a barrel will drag a bullet down

 

Too long of a barrel, Yes!
I remember some guys messing with 308s using 36" barrels in F-Class, it was short lived.

 

That's what happens when you mess with the recipe, ask the cook, LOL

 

Don't forget twist rate, grain, and ammunition type and material, barrel compostion and cleanliness also play a major role, as well as natural condions, i.e. wind, temperature, etc.