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Thread: My 260AI Load Development Begins

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  1. 22-01-2016, 04:55 PM #1
    Tikka7mm08
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    @25/08IMP AP-30 is their fastest powder so 17gn means I have room to move I suspect.
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  2. 22-01-2016, 04:49 PM #2
    Tikka7mm08
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    I could've gone higher may be but was worried I'd stuff the primer pocket... @7mmsaum should I go hotter?

    I am only using RE17, and have a tub of AP-70.

    Would love some more RE17 if any one has some.
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  3. 22-01-2016, 05:00 PM #3
    25/08IMP
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    Abe tried 14 up to 18 grns when he did my barrel 18 had a slight ejector mark but 17 was fine and a 2" square patch pushed hard over powder.

    Sent from my SM-G900I using Tapatalk
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  4. 22-01-2016, 05:42 PM #4
    R93
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    I use heaps more AS 30N than that.😆

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    Do what ya want! Ya will anyway.
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  5. 22-01-2016, 09:47 PM #5
    Tikka7mm08
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    Went to 19gn and no real improvement...very hot suppressor.
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  6. 22-01-2016, 09:57 PM #6
    Kiwi Greg
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    Quote Originally Posted by Tikka7mm08 View Post
    Went to 19gn and no real improvement...very hot suppressor.
    Hang on a minute, you were firing forming, shooting rag through a suppressor ?

    Can you pull it apart to see how much rag is in it & how much damage you may have done to it ?
    mikee likes this.
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  7. 22-01-2016, 09:51 PM #7
    25/08IMP
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    I take it off and point it into a big bag of rags.

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  8. 22-01-2016, 10:17 PM #8
    MSL
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    Hahaha
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  9. 22-01-2016, 10:18 PM #9
    Tikka7mm08
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    Yeah I didn't use the cloth with the suppressor...was loading and firing out of gunroom window as I went...upside of rural living... the 0.25" squares were gone before the end of the barrel but decided against chance.
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  10. 23-01-2016, 08:11 AM #10
    Danny
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    A 'load' of drama - fire forming
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    Dan M
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  11. 23-01-2016, 02:45 PM #11
    7mmsaum
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    Yes that fire forming load can go hotter to sharpen up those shoulders, and lube the outside of the neck and shoulder with Redding sizing wax, this helps the shoulder form even easier without chamber wall friction.
    Tikka7mm08 likes this.
    A big fast bullet beats a little fast bullet every time
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  12. 03-04-2016, 03:50 PM #12
    Mathias
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    @Tikka7mm08 what's the latest on this front? Tried any of those 143gr ELD-X in this machine yet?
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  13. 03-04-2016, 04:07 PM #13
    Tikka7mm08
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    Hi...sorry bit behind. Haven't seen the 143gners yet...got 2 boxes on order still.
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  14. 03-04-2016, 04:25 PM #14
    Mathias
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    Yeah I bet that bloody scope saga has really eaten into your enthusiasm
    I've got about 90 loaded up for fire forming and sighting but due to my local range out of action very little else has happened on my 260Imp. Got a Magneto Speed on the way too, will get serious when this arrives.
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  15. 03-04-2016, 05:32 PM #15
    Kudu
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    Why all the hassle with fireforming??????

    When I ackley improved my .257 Roberts I just fired standard .257 ammo and bobs your uncle! Fireformed brass.
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« .284 133gr cast lead hollowpoint subsonic projectile report | 260 short barrel powders »

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