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  • 1 Post By Pommy

Thread: 223 80gn challenges

  1. #1
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    223 80gn challenges

    Been sorting out the "new" barrel in my 223 - its a 1:8 that I had in another rifle and was set up for a particular 80gn Sierra load - 24.5 of 2208. It shot very well in the old action. Its now a 24" barreled "gong" and range gun, pretty much what anyone would call a "varmint rifle but in an adjustable stock.

    When the barrel was refitted it wasn't possible for the gunsmith to throat the barrel, his reamer wouldn't fit - apparently Kriegers can be "tight".


    So I have a COAL to "jam" of 2.420. I tried running loads of 24.5 Gns of 2208 at a COAL of 2.400 but they kept "pushing out" (due to the compressed charge I think) to a COAL closer to jam, and probably with varying lengths. And they didn't shoot that great, no surprise eh!

    So - what to do next.

    I could go to Winchester 748, it often goes pretty good in the 223 and enough will fit (with no compression) to get pretty close to 2208 velocity.

    I could try and find some cases with a bit more capacity but from the data I see on Accurate Shooter.com I don't think I'll gain much.

    Finding a 'Smith with the right reamer would also work, but its not my preferred choice (I've found mixing 'Smiths seldom works out . . . . )

    Thoughts ??

  2. #2
    Member Micky Duck's Avatar
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    748 is good powder and meters so much easier...BM1 OR BM2 could also be options....

  3. #3
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    I was trying to avoid buying a "new" powder - I have 2208 and 748 . . . .

  4. #4
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    Have a play with Gordons reloading Tool, I ended up with Vitivory 130 for what I was trying to achieve, adjust OAL , watch pressures, get a burn rate for barrel length. Good fun, can save heaps. Beg borrow, swop different powders locally to try.

  5. #5
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    Belmont 763 should get the same or better speeds.
    Resident 6.5 Grendel aficionado.

  6. #6
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    Hey thanks for those thoughts.

    After a little more experimentation I can run right on "jam" with 24.5 of 2208 at a stable COAL, which is the "pet" load. I've never liked the thought of being at jam in case it doesn't end well but its probly not a disaster for a range rifle.

    The suggestion of 763 is a good one, I might be able to get to a higher node with it (modelling it in GRT as 2000-MR . . . . thoughts on that Martin ??)

  7. #7
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    You'll get a fair bit more in there without running into compression like you are with AR2208. Heavy for calibre in 223/308 seems to be where it's good.

    Next time you're comingv up Canterbury ways, give me a shout and I can donate you some, if you want to do any experimenting.
    Micky Duck likes this.
    Resident 6.5 Grendel aficionado.

  8. #8
    Member 300_BLK's Avatar
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    Have you tried a drop tube to reduce compression?

    You could ackley the chamber. Will give more performance and capacity.
    Warm Barrels!

 

 

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