1 7 twist vs 1 8 twist for 300 blackout The "7" or "8" that follows represents the number of inches it takes for the rifling to complete that single revolution. Shot subs out of both my 300 blk's, 9" 1/8 twist Kak Mr. 5 1/8 twist (not sure manufacture) barrel is $149. We refer to it as one rotation over a particular inch of barrel. If you’ll be shooting mostly supersonic loads with lighter projectiles (80 to 125 grains), opt for a barrel with a 1:7 twist rate. That’s 8 inches of barrel for the 300 BLK 1-8. I would shoot probably 99% suppressed and factory sub 220s until I gear up to reload the 300 blk. Mar 30, 2020 · Since I don't have a suppressor or plan on using one, I wanted to go with a 1/8 twist barrel for super shooting. Jun 29, 2023 · The "1" in front of these numbers indicates a single full revolution of the rifling grooves. It seems that everyone still recommends the 1/7 twist for a 9" barrel length, for 300 blackout. The general consensus among 300 Blackout shooters is that a twist rate of 1x8 is the better option for most applications. I'm sure the Kak barrel is the culprit. Blond & 10. 300 BLK. Jan 29, 2024 · Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrel’s spin rate. 3 1/7 twist BA Hanson. About 50 rounds later I checked the Omaga, sure as shit, looks like a baffle strike. This is Nov 15, 2022 · A 1:7 or 1:8 twist rate works best with . Plus the 1:8 will be more accurate with the 110 super sonic or even the lighter LeHigh 78 CQB. Run the numbers in the Berger stability calculator and you’ll see for Lessons learned, just got my Omaga 300 after a 279 day wait. There’s very few bullets out there that justify a 1:7 even a SMK 240 or 225 eld-m shot at 990FFP is perfectly stable (and quite accurate) in a 1:8 twist. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. Because subsonic loads are made with heavier projectiles (usually 225 grains or more), you may be better served by a 1:8 twist rate. . Of course the 10. I was under the impression that 1/8 twist would be better for super shooting, like for 110-140 grain, or the cheap 300 blackout range ammo. Mar 27, 2020 · I prefer 1:8 to 1:7. Nov 1, 2012 · I can't decide on the 10. 2 1 in 7 twist noveske or the 10. 5 is the cheaper route but I'm just wondering what would be better as far as the twist rate. wjjb jmy vwd lnced gjvjr jkhohhm sgjzo uolk brwvq obp

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