Hulp op QL asb

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Dale SH
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Re: Hulp op QL asb

Post by Dale SH »

Ajviljoen260rem wrote: Sun Jan 16, 2022 9:07 am Dale, wat dink jy kan die oorsaak wees ( high burnrate)?

Many reasons.
Bullet in rifling being my first thought.
Case trim length too long
Carbon ring
Incorrect chrony reading
etc etc

Waar le die node vir reloder 26?

Providing that you have established where the excessive burn rate has originated from
Safe node at approximately 46.8 grains Rel 26
3060 fps at 50 000 psi



Groete
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Re: Hulp op QL asb

Post by tripodmvr »

AJ, omdat ek ook 108gr ELDM uit my 243 RPR wil skiet het ek ook die berekening met RL22 gedoen. Dit staaf Dale se bevindings en ek het dadelik aan TPL gedink.
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Dale SH wrote: Sun Jan 16, 2022 9:15 am
Ajviljoen260rem wrote: Sun Jan 16, 2022 9:07 am Dale, wat dink jy kan die oorsaak wees ( high burnrate)?

Many reasons.
Bullet in rifling being my first thought.
Case trim length too long
Carbon ring
Incorrect chrony reading
etc etc

Waar le die node vir reloder 26?

Providing that you have established where the excessive burn rate has originated from
Safe node at approximately 46.8 grains Rel 26
3060 fps at 50 000 psi



Groete

Dale, kan ek maar tpl korter maak en weer n skoot of twee gaan skiet met n550 en kyk wat hy maak??

Is daar dalk n laer node met reloader 26 rondom 2900 give or take?

Groete
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Re: Hulp op QL asb

Post by tripodmvr »

As die sprong na die lande baie kort is dan kan 'n korter TPL dalk help. Kyk wat jy kry as jy so 1 na 2mm korter gaan.
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Re: Hulp op QL asb

Post by Dale SH »

Ajviljoen260rem wrote: Sun Jan 16, 2022 10:44 am
Dale SH wrote: Sun Jan 16, 2022 9:15 am
Ajviljoen260rem wrote: Sun Jan 16, 2022 9:07 am Dale, wat dink jy kan die oorsaak wees ( high burnrate)?

Many reasons.
Bullet in rifling being my first thought.
Case trim length too long
Carbon ring
Incorrect chrony reading
etc etc

Waar le die node vir reloder 26?

Providing that you have established where the excessive burn rate has originated from
Safe node at approximately 46.8 grains Rel 26
3060 fps at 50 000 psi



Groete

Dale, kan ek maar tpl korter maak en weer n skoot of twee gaan skiet met n550 en kyk wat hy maak??

Is daar dalk n laer node met reloader 26 rondom 2900 give or take?

Groete
Why would you want to run on a lower node when the predicted pressure at 3060 fps is only 50 000 psi
A lower node may be borderline pressure for good bullet obturation/expansion and you may battle with high ES and accuracy.
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

tripodmvr wrote: Sun Jan 16, 2022 11:18 am As die sprong na die lande baie kort is dan kan 'n korter TPL dalk help. Kyk wat jy kry as jy so 1 na 2mm korter gaan.


Hallo oom driepoot,

Ek vannd gou n 3 gelaai met tpl wat 1mm korter is dat ek kan gaan skiet oor labradar en kyk wat hy maak. Ek laat weet sodra ek klaar geskiet is, wat my bevindinge is.

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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Dale SH wrote: Sun Jan 16, 2022 11:23 am
Ajviljoen260rem wrote: Sun Jan 16, 2022 10:44 am
Dale SH wrote: Sun Jan 16, 2022 9:15 am

Dale, kan ek maar tpl korter maak en weer n skoot of twee gaan skiet met n550 en kyk wat hy maak??

Is daar dalk n laer node met reloader 26 rondom 2900 give or take?

Groete
Why would you want to run on a lower node when the predicted pressure at 3060 fps is only 50 000 psi
A lower node may be borderline pressure for good bullet obturation/expansion and you may battle with high ES and accuracy.
Ek sal graag die ackley stadiger wil skiet om tekyk of die loop lewe nie bietjie beter gaan wees nie. Of dit wel so gaan wees weet ek nie. Ek weet daar is ander faktore wat ook n rol speel by loop leeftyd.

As ek hom wel hier om en by 2920/2950fps kan skiet sal sy kalabrasie baie naby aan een van die ander gewere ook wees wat hom teen 2930 skiet(strelok)

Ek gaan gou more weer n lading skiet met n550 wel met 1mm korter tpl en kyk wat hy gaan maak.

Dankie sover vir julle insette. Word waardeer

Groete
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Re: Hulp op QL asb

Post by Capt. Yoda »

Hy jok hy is bang vir recoil, Adriaan hoekom skiet jy nie N165 in daai AI nie?
Jy gaan teen selfde spoed skiet met n lekker vol dop koel kruit, N550 is hard op n loop
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Re: Hulp op QL asb

Post by Gawie(13mm) »

Spoed op sy eie, is nie noodwendig 'n aanduiding dat 'n loop vinnig gaan verweer nie. Met die koms van QL, GRT en "borescopes", het dit vir ons 'n beter begrip gegee van hoekom 'n loop verweer.
Druk, bereken deur die spoed te meet en te kalibreer tov die lading, gee 'n baie beter aanduiding van looplewe.

Almal weet dat 'n 308 gemaklik 3 000 skote kan lewer teen 52 000 psi.
'n .243 wat 'n 87 grein koeël teen 3 200 vps skiet, is naby 61 000 psi en 1900 tot 2000 skote is op die kaarte.
Ek het op my 24 duim .243 Ai HOWA, amper 2900 skote gekry voor my agterwereld gejeuk het. 'n 87 V-max teen 3100 vps het maar teen 45 000 psi gestap.

My punt is, Probeer 'n stadiger kruit, wat 'n voller dop sal gee en teen 50 tot 52 000 psi, gaan jy sommer lank met daai loop skiet.
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Re: Hulp op QL asb

Post by tripodmvr »

Barrel life update.xls
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Hallo Dale en oom driepoot.

Tpl68.4mm
N550 38.5
2959fps

27 grade toe ek geskiet het.

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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Ander vraag wat ek het is, as ons nou oorgaan na rel 26 of n165 toe gaan daar genoeg dop kapasiteit wees met n korter tpl se maar van 68mm?

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Re: Hulp op QL asb

Post by Dale SH »

Your burn rate has come down a bit but is still high.
38.2 or 38.3 grains for 2946 fps will put you on the node.
54000 psi and your case fill is +-82%

You can do better with a slower burning powder.
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Re: Hulp op QL asb

Post by Dale SH »

Ajviljoen260rem wrote: Mon Jan 17, 2022 6:28 pm Ander vraag wat ek het is, as ons nou oorgaan na rel 26 of n165 toe gaan daar genoeg dop kapasiteit wees met n korter tpl se maar van 68mm?

Groete
Yes there is enough capacity for Rel 26
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Dale baie dankie,

Waar moet ek begin met rel26 met tpl 68.4mm?
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Re: Hulp op QL asb

Post by Dale SH »

46.0 grains
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Dale SH wrote: Mon Jan 17, 2022 6:58 pm46.0 grains
Dale, dankie.

Ek sal toets en terug kom.

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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Dale SH wrote: Mon Jan 17, 2022 6:58 pm46.0 grains


Dagsê Dale, ekt toe besluit om oor teskakel rel 26 weereens. Ekt gou woensdag middag gaan skiet net om spoed tekyk.

45.4 rel 26
3030
3039
3057
3051fps
Kan jy asb vir my kyk?

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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Ajviljoen260rem wrote: Sun Feb 20, 2022 5:49 pm
Dale SH wrote: Mon Jan 17, 2022 6:58 pm46.0 grains


Dagsê Dale, ekt toe besluit om oor teskakel Rel 26 weereens. Ekt gou woensdag middag gaan skiet net om spoed tekyk.

45.4 rel 26
3030
3039
3057
3051fps
Kan jy asb vir my kyk?
Ek waardeer
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Re: Hulp op QL asb

Post by tripodmvr »

Ek weet nie waar Dale wegkruip nie, maar hier is my poging.

45,6gr vir 3055vps by die loop. Druk dui op 51K psi wat goeie ontbranding sal verseker.
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

tripodmvr wrote: Wed Feb 23, 2022 12:00 pm Ek weet nie waar Dale wegkruip nie, maar hier is my poging.

45,6gr vir 3055vps by die loop. Druk dui op 51K psi wat goeie ontbranding sal verseker.


Dankie oom 3Poot,
Ek waardeer

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Re: Hulp op QL asb

Post by Ajviljoen260rem »

Hierdie is op 200m geskiet. Dankie oom 3poot. Dink hys darm nou reg vir aksie. Sal meskien weer gaan toets net om sekerheid tekry en tebevestig.
Last edited by Ajviljoen260rem on Sun Feb 27, 2022 1:12 pm, edited 1 time in total.
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

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Re: Hulp op QL asb

Post by tripodmvr »

Dit lyk baie goed - skut het sy kant gebring. Het jy spoed gemeet?
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Re: Hulp op QL asb

Post by Ajviljoen260rem »

tripodmvr wrote: Sun Feb 27, 2022 2:43 pm Dit lyk baie goed - skut het sy kant gebring. Het jy spoed gemeet?
Ongelukkig nie spoed gemeet nie. Sal wel as ek weer gan seker maak oor lading.

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