What grain bullet is best for a 1 in 12 twist?
55-grain
The 1:12 is perfect for lightweight 55-grain bullets, which constitute the majority of practice and plinking . 223 ammunition. However, most modern carbine barrels shorter than 20 inches feature faster twist rates, so shooters wanting a 1:12 should stick to the old-school 20-inch rifle pipe.
What does a 1/12 Twist mean?
So a 1:10” twist is slower than a 1:8” twist, a 1:12” twist is slower than a 1:10” twist, and so on. Generally, fast twist barrels are used for longer bullets while slower twist barrels are used for shorter bullets.
What grain bullet is best for 1 in 11 twist?
I like 165 grain accubonds. They have a good balance between penetration and speed. For 308 win. 1:11 twist will handle up to about 200 grains depending on the style of bullet.
What does a 1 in 7 twist mean?
A 1:7 twist rate indicates that the bullet will undergo a rotation once every seven inches, which, as you might imagine, is a much faster spin. For those who are curious, Guns&Ammo notes that the military uses the 1:7 twist rate.
What grain bullet is best for 1 in 7 twist?
While 62-grain bullets prefer a rate of twist around 1:8, 77-grain bullets weights favor a 1:7 twist rate.
Is a 1/7 twist barrel good?
A common slow twist rate, for example, could be notated as 1:12. A twist rate of 1:12 means that the bullet does one 360 degree rotation per 12 inches of barrel. A 1:7 twist rate indicates that the bullet will undergo a rotation once every seven inches, which, as you might imagine, is a much faster spin.
What is the best bullet weight for a 308?
308 made its reputation as a deadly-reliable medium game killer with bullet weights from 150 to 180 grains. The hunter armed with a . 308 with quality optics and loaded with good factory ammo or hand-loads in the 150 – 180 grain range, is ready for any medium to large non-dangerous game in the world.
Will a 1/7 Twist shoot 55 grain?
The quicker 1 in 7 twist might shoot the 55 grain loadings such as the M193 very well or even shoot lighter weight bullets than that.
Can 1/7 Twist shoot 55gr?
What are the 1 / 12 twist barrels best used for?
The 1:12 was the original M16 barrel twists which rated distance for the 55 grain MIL ammo was 650m. We actually trained at that distance too. That’s more or less the Vietnam Era twist rate. A slower twist actually means you can push the bullet a little faster and stabilize.
What kind of bullet can you shoot in a 1-12 twist?
Remember the relatively small case capacity of the 223 and just be happy with bullets designed for that twist! You will be really pushing the cartridge to get a 69 gr bullet to shoot in a 1:12 twist. My favorite load is 25.5 grains of H4895 with the bullets jumping .020″ in my 1:12 twist 223.
Which is better 1 : 12 twist or 1 : 10 twist?
A longer barrel = more velocity, so the .308’s with greater than 20″ of barrel are generally, though not always, better at stabilizing a heavier bullet. A lot of .308 rifles have moved to 1:11.25 (or even 1:10) for this very reason, but a 1:12 twist rate can still work with a long enough barrel.
What is the rifling twist rate for A.22 rifle?
Rifling Twist Rate. This cartridge was designed specifically for use with 55 grain spitzer bullets and its twist rate was originally specified as 1:14″. This was later tightened to 1:12″ for long range shooting, which works very well with bullets weighing 40-60 grains, the usual .22 centerfire bullet weight range.
