100gr Sierra GameKings .243Win Ai

Quicker · Post by **Quicker** » Thu May 27, 2021 12:03 am

Hi Guys,

Need some assistance with a fireforming/general purpose load.

The chamber cut was spot-on. Below pic, both cases virgin brass, line on the right hand case at the neck/shoulder junction shows the “crush-fit” when closing the bolt.

Rifle: Remington 700 SPS varmint
Barrel length: 660mm (blot closed)
Twist: 1 in 9 and some obscure number
Case: Starline brass LRP
Case length: 51,6mm
Case vol: 52,86gr ave (std .243Win case)
Lands at 66,5mm (stok metode gemeet)
TPL: 66mm
Bullet: 100gr Sierra GameKings spbt
Powder: S365 Lot 91
Primer: CCI200

Thnx

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jayzet · Post by **jayzet** » Thu May 27, 2021 6:26 am

Hi,
I would measure that chambered cartridge, run it through your die and measure again. If it shrunk 2 to 3 thou, you should be good to go. Else you need to find the correct, minus say 2 thou bushing dies to size your brass.
After the 1st firing you could think about neck turning to set the relief to approx. 2 to 3 thou.
If you don't get the desired outcome after sizing you'll probably have to neck turn.

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Post by **tripodmvr** » Thu May 27, 2021 6:44 am

Probeer 41gr en berekende spoed is 2930vps. Lot 91 is stadig brandend en werklike spoed kan laer wees. Een tot 3 skote sal voldoende wees om 'n node berekening te kan doen. Meet net die volume van die gevuurde dop.

Quicker · Post by **Quicker** » Thu May 27, 2021 8:29 am

Hi Jay,

Thnx for your comment, as this point in time, there is nothing wrong with the cases, they will be run through an Ai die once I have fireformed them.

Oom Tripod,

Dankie vir die terugvoer. Sal laai, spoed meet en dan terugvoer lewer.

Sal ook díe nuwe/actual (Ackley) case vol meet as ek klaar geskiet het.

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Quicker · Post by **Quicker** » Sun May 30, 2021 10:37 pm

Naand se Oom Tripod,

Kon toe gister Só skootjie of wat geskiet kry hier tussen deur die reen, agv die reen was my ou Chrony maar all over the show gewees, te verstane.

Ek was gelukkig gewees om 2 skote met n magneto speed te kon skiet.
Spoed was 2904 en 2935 fps, ek het fireformed case vol ook gemeet en kry n ave van 56,26gr H2O.

Skote 1 en 2, was 1 skoot skoonmaak, rinse and repeat...toe is dit 2 skote skoonmaak rinse and repeat en lyk die skote maar effe bont.

8,9&10 (spoed op teiken is my chrony 5m) het ek na mekaar geskiet sonder om skoon te maak. Dit lyk vir my soos n mooi skoon fireform, alhoewel die primers so effe krater wys, slot het maklikker oop gemaak as toe itv die crushfit close.

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Post by **tripodmvr** » Mon May 31, 2021 6:55 am

Volgens die 2 MS gemete spoed, kan ek die volgende veilige ladings deurgee.

1. 40,7gr vir 2900vps op die chrony 5m weg - druk is nog baie laag.
2. 42,6gr vir 3030vps op chrony
3. 44,3gr vir 3125vps - midnode en druk van 54K psi. Hy kan miskien werk.

Let net op. S365 se brandtempo verhoog soms meer as bereken en dit as gevolg van hoër druk.

Quicker · Post by **Quicker** » Sat Jun 19, 2021 11:51 pm

42,6gr is opi nommer!!
100m

200m - moet nog Só bietjie aan my skiet vernuf werk

Dankie vir die lading raad

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ruaanb · Post by **ruaanb** » Sun Jun 20, 2021 8:16 am

Netjies skiet volgende keer n 5 skoot groepering en kyk hoe lyk dit dan?

Quicker · Post by **Quicker** » Sun Jun 20, 2021 9:57 pm

Thnx Ruaan, sal so maak.

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Quicker · Post by **Quicker** » Fri Mar 15, 2024 1:10 pm

Tyd om die post weer bietjie af te stof!!

Ek het uiteindelik deur my 200 doppe gewerk en hul almal is nou gefireform.

Kan Oom Tripod my asb help om te kyk hoeveel poeier ek nou moet gooi in die dop om hom weer naby/op node te kry nou dat die Ai doppie se ave H2O volume nou 56.21gr is.

En dan ook, watse Vithavuori kruit kan ek probeer.

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JARACAL