How much velocity do you lose per inch of 223 barrel?
223/5.56 ammo, with a 9.5″ shortening of barrel length, was 240.75 fps total (from start to finish). That works out to an average loss of 25.34 fps per inch.
What is the optimal barrel length for 556?
For most loads, 5.56 NATO and . 223 Rem do best with a 16″ barrel and 1:8 twist rate. For . 308 and 7.62 NATO, a 20″ barrel and 1:12 twist rate works best for all loads.
What is the muzzle velocity of a 223?
With the typical 55-grain bullet, the . 223 Remington cartridge usually logs a muzzle velocity above 3,100 feet per second. If it has a smaller bullet, it can go much faster.
What is the velocity of a 5.56 NATO round?
5.56×45mm NATO
| Bullet mass/type | Velocity | Energy |
|---|---|---|
| 3.56 g (55 gr) XM193 FMJBT | 993 m/s (3,260 ft/s) | 1,755 J (1,294 ft⋅lbf) |
| 4 g (62 gr) SS109 FMJBT | 948 m/s (3,110 ft/s) | 1,797 J (1,325 ft⋅lbf) |
| 4 g (62 gr) M855A1 FMJBT | 961 m/s (3,150 ft/s) | 1,859 J (1,371 ft⋅lbf) |
| 4.1 g (63 gr) DM11 FMJBT | 856 m/s (2,810 ft/s) | 1,796 J (1,325 ft⋅lbf) |
Do longer barrels increase velocity?
Longer barrels give the propellant force more time to work on propelling the bullet. For this reason longer barrels generally provide higher velocities, everything else being equal.
What is the best barrel length for a 556 223?
IMO, 24″ of barrel length will give you just about everything you are going to get from a . 223/5.56mm. You can go longer, but you will quickly enter the land of diminishing returns. Anything between 20″ and 24″ will work well.
What length barrel is best for 223?
The best barrel length for a . 223 caliber ranges between 20 and 24 in (50.8 and 60.96 cm). Typically, a 20-in (50.8 cm) is ideal for hunting, while a 21-22 in (53.34-55.88 cm) barrel is best for off-bench shooting. Additionally, a 22-24-in (55.88-60.96 cm) provides the highest velocity for this caliber rifle.
What is the optimal barrel length for 223?
What’s the fastest 223 bullet?
223 designation is a reference to the popular . 223 Remington. It is currently claimed to be the fastest production . 22 caliber round in the world with muzzle velocities as high as 4,600 feet per second (1,402 meters per second), but this is not completely true.
Which is better 5.56 or 223?
There does seem to be more options in .223, but good deals and a variety of loads can be found in 5.56 as well. Also, if you choose to interchange the two cartridges, you can more safely shoot a .223 cartridge in a 5.56 barrel. In that case, the 5.56 might be a good choice because you can have more choice in ammunition.
Is 556 same as 223?
The exterior (physical) dimensions of .223 and 5.56 ammunition are effectively identical . 5.56 ammunition may be loaded to higher pressures than .223 ammunition. 5.56mm chambers are dimensionally larger in certain critical areas than .223 chambers. Given the same ammunition, 5.56 chambers will have lower pressures than .223 chambers.
Is 223 and 556 the same ammo?
Short and sweet: the 5.56 and the .223 are the same bullet (.224 diameter) but the brass case and primer are different. The brass is thicker on the 5.56 and the primer is less sensitive. yes, the 5.56 is loaded to a slightly higher pressure, but not a significant one. So, you can safely fire .223 in a 5.56 chamber.
Is 5.56 NATO and 223 the same?
The 5.56 mm NATO cartridge is a variant of the .223 Remington, but the two cartridges are not the same. There are differences that a shooter or handloader must be aware of.