Heavy .223 loads vs light .243 ones

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Re: Heavy .223 loads vs light .243 ones

Post by SCJ429 » 13 Jun 2019, 7:32 pm

All things being equal the 1:12 barrel will shoot 50 grain projectiles more accurately than a 1:8. The extra rpm from the faster twist increases the vibration from jacket runout. Using lighter flat based bullets your rifle will be hard to beat out to 300 metres.
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Re: Heavy .223 loads vs light .243 ones

Post by Sergeant Hartman » 14 Jun 2019, 9:04 am

The 12 twist will stabilize smaller projectiles they've 8 twisty cannot as it will spin them to fast.
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Re: Heavy .223 loads vs light .243 ones

Post by bigrich » 14 Jun 2019, 9:15 am

Apollo wrote:
CrackThump wrote:*I'd like to know the difference in hunting performance and what you can/can't/shouldn't take with this.*

From this first line, I dunno, potentially she's asking about energy delivered on target and knockdown potential. ?


Who says it's a "she".... :sarcasm:

BTW.... in your signature line, what's this "cracker" "thumper" "bruiser" bit...???


Gezzus Apollo, haven’t ya heard of shazza ? She’s the girlfriend/wife of dazza :lol: :lol:

:drinks: :drinks: :thumbsup:
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Re: Heavy .223 loads vs light .243 ones

Post by Stoney » 14 Jun 2019, 6:13 pm

AZZA'S HJ47 wrote:I use a 69g pill in my 223 and i used to a one point shoot the 58g vmax on a max load of 2208 if you are shooting small varmints it was a absolute pleasure take a neck shot and off would fly the head and so on and so forth. 69g 223 round would be used for longer distance shooting a lots less impressive but bang on in the accuracy department.

I stopped shooting the light stuff due to the complete fact that other than spectacular explosive expansion the barrels not going to last.

I still shoot 69g pills in the 223 for mostly target and longer range feral sniping. I have moved to a 87g vmax for the 243 still moving but not costing barrel life.

Hope this helps



+1 The .224 Sierra Match King 69 grn HPBT is an absolute gem.
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Re: Heavy .223 loads vs light .243 ones

Post by SCJ429 » 14 Jun 2019, 7:43 pm

Ziad wrote:The 12 twist will stabilize smaller projectiles they've 8 twisty cannot as it will spin them to fast.


You can shoot light projectiles out of a 1:8 barrel, you will find that 40 grain projectiles shoot adequately well, the extra rpm make them quite explosive on game. The only time the extra rpm becomes a problem is when the jacket comes apart.
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Re: Heavy .223 loads vs light .243 ones

Post by GQshayne » 14 Jun 2019, 9:08 pm

xDom wrote:While we’re talking about.223’s can I chime in with another question.?
I understand that a 1:8 twist can stabilise a heavier bullet allowing it to shoot out to a much greater distance than the 1:12.
My .223 has the 1:12. I didn’t know anything about twist rates when I bought it, it was recommended as a good all round hunting rifle for smaller game.
My question is, what advantage does the 1:12 twist have over the other and is it actually a better fit for hunting?
Thanks


You have answered your own question Dom - the different twist rates are MOST suitable to particular projectile weights. If you wanted to use projectile weights upwards of 60gn, then the 1:8 twist is most suitable. For projectile weights up to 60gn then the 1:12 is most suitable. Of course, both twist rates will still shoot varying weights well, but you have the choice of twist rates depending on your purpose for the rifle.
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