1/9 or 1/7 twist

[Hail Caesar]

Ok...here it goes.

The 1/9 will stabilize any 69 grain and under bullet. It will stabilize some 75 (If you are LUCKY) and hardly ever a 77.

A 1/7 is a military requirement just so they can stabilize the long tracer round that they now use. Otherwise the 1/7 is actually to much twist in an AR as a 1/8 twist will stabilize the 80+ grain bullets that some guys use for long range use. These bullets are so long they will not fit in the mags and must be single loaded through the chamber.

If you are only ever going to shoot 69 and sub weight rounds then get the 1/9.

If you have/want to shoot the 72 or above rounds get a 1/7 twist if you want a chrome-lined barrel. If you want a SS barrel then get a 1/8.

Some of the all copper bullets while light in weight are very long and you must use the 1/8 or 1/7 twist.

(Side note- Most people talk only on weights in correlation to twist rates. It actually has to do with bullet lenght, but as a heavier bullet usually is longer most just equate weight to twist.)