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.223 twist?

leaddispencer
I have a .223 Sako with a 1 in 15 twist. What bullet weight should I use. This seems like an awfully slow twist for a .223 doesnt it?
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5 comments

Date Votes
  • Boomerang
    40 grain

    Boomer

    "Success is to be measured not so much by the position that one has reached in life as it is by the obstacles which one has overcome while trying to succeed"

    . and the antithesis to this philosophy was uttered by Bill Clinton "I smoked it, but I didn't inhale."[V]

    NRA Life Member
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  • Kdub
    The 40 to 50 gr bullets will probably work best.

    The Remington 40XB, Husqvarna, Savage 24 and 340, Wichita and WEatherby Vanguard .223's all have a 1:14" twist. Sako's normally have a 1:12" twist in their factory barrels. Their .222 Mag's had a 1:15.5" twist in the 1972 models.

    Keep off the Ridgeline
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  • TrooperAllen469
    1 in 14, to 1 in 15 is about standard in long barrel 22 centerfire rifles. They are designed for the short projectiles, ie:50 grain family of projectiles. (read 59 and under) The faster twist rate barrels are for the longer projectiles, such as the 62, 68 grain, etc. Longer bullets will "keyhole" when fired from slower twist barrels. The long bullets will not de-stabilize until approx 100 yards when fired from the slow barrel. After proper break-in, try several different weights and brands, and see what works for you. Confused yet?

    Trooper 1st Class,Georgia State Patrol, Certified General Instructor, Firearms Instructor, Defensive Tactics Instructor, Armorer, Gunsmith, Former U.S.Navy 1st Class Petty Officer
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  • D. Bryan
    The standard for rifling is; the slowest twist required to stabilize the bullet. It you shoot nothing above 50gr, the 15" twist is fine.
    I have observed problems with 14" twist and reduced load 55gr BT in .223. The rotational speed is what is needed to stabilize a bullet
    a high velocity cartridge needs less twist than a low velocity to stabilize a long bullet. The standard twist for a Swift is 16".

    Active old guy who lives with two dobermans.
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  • JudgeRoyBean
    Pre-Garcia Sako .223 Remington Chambered rifles came from the factory with a 1 in 12" twist as "Standard." Initially, when the .223 was being tested for production, Armalite was using a 1 in 14" twist which wouldn't stabilize the 55 gr. FMJ bullets, hence the 1 in 12" which is pretty much what is found on all commercial rifles as a "standard" to begin with. This is a compromise twist rate that works quite well with the 40 to 65 grain bullets......

    I would double check to make sure about a 1 in 15" because that would have been non-standard twist rate.



    Henry Ford stated: "There is no one more useless than a Convict, except perhaps, those that guard them. This was his reason NOT to hire either one of them!
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