QL vir 308 Win

[Plant]

Goeie middag al die menere op die forum
Ek wil weet of iemand my asb kan help.
Ek sal dit baie waardeur as een van die manne my inligting kan invoer en kyk wat "QL" gee.

Geweer     308 Musgrave
Twist     1:12
Loop Lengte    24"
Doppe     Nosler CC
Dop Lengte    50.68
Dop Kapasiteit 56.515 gr (Gemiddeld van 20 doppe)
Primers     CCI 200
Koeel            150 gr ACCUBOND
Koeel Lengte  31 mm (31.242)
BC     0.435
SD     0.226
TPL     71.55
Kruit     S335

Byvoorbaat dankie vir die moeite, inligting en raad.
Groete.
Plant

[Reggie Gerber]

Hi A good friend of mine has a Sako trg .308 and I am helping him to develop a load for Target shooting so he needs the best accuracy possible with highest speed and safe pressure. The specs are as follows
Calibre .308
Bullet 155g palma match
Case  Norma
H2O Fireformed Case 55.4g
Primer CCI BR2
Max tpl 76.6mm
Tpl of test load 72mm
Barrel length 26inch
Barrel twist 1-11
Powder tested s335
Load tested 42g
Speed achieved 2750fps ave 10shots

Am looking for a node speed to load up to and a possible start load

Much appreciated
Reggie

[tripodmvr]

Hi A good friend of mine has a Sako trg .308 and I am helping him to develop a load for Target shooting so he needs the best accuracy possible with highest speed and safe pressure. The specs are as follows
Calibre .308
Bullet 155g palma match
Case  Norma
H2O Fireformed Case 55.4g
Primer CCI BR2
Max tpl 76.6mm
Tpl of test load 72mm
Barrel length 26inch
Barrel twist 1-11
Powder tested s335
Load tested 42g
Speed achieved 2750fps ave 10shots

Am looking for a node speed to load up to and a possible start load

Much appreciated
Reggie

I would keep the COL at 72mm (shank held only by3,7mm) and try 43,5gr for speed of 2830 for the upper node(pressure of 58000psi). The node above this one can only be achieved with over pressure of 9000psi (very dangerous). If accuracy is not there try shorter COL and adjust powder down to still achieve 2830fps.

[Reggie Gerber]

Thanks Tripod

Will give that load a try.

The long jump is due to the shank being shallow in the case neck

Reggie

[tripodmvr]

Thanks Tripod

Will give that load a try.

The long jump is due to the shank being shallow in the case neck

Reggie

Just warning you that a longer COL is impractical. Normally the norm is to have at least bore distance (7,6mm) in the case mouth so as to ensure concentricity.

[Reggie Gerber]

thanks Tripod

I am aware that the bullet is not seated very deep so wont load for a longer col

Reggie

[Johan Reyneke]

Ek Saterdag my seun gehelp met sy nuwe 308 Howa en wil net graag bevestig of my QL kalibrering reg is
Wapen  308 Howa 1500
Loop Lengte 557mm
Doppe Remington met H2O (fire formed) 57.3gr
Toets tyd : 11:30 ? 12:00
Crony ? 4m van tromp
Dop Lengte 51mm

Hornady 165 SP Interlock (#3040)
Overall Lengte 71.5
Max TPL 72.5 mm
Kruit gebruik S 335  Lot 698
Primer ? Murom Large Rifle
40.9 gr 2498 2508 2496
41.3gr 2539 2534 2539 (Lyk na node 1.197)

QL aangepassing - burnrate factor afbring na 0.595 om te kalibreer
Voorspelling
43.4gr 2642

Hornady 110 XTP (#3010)
Overall Lengte 65.5
Max TPL 70.2 mm
Kruit gebruik S 335  Lot 698
Primer ? Murom Large Rifle
44.4 gr 2841 2842 2830
44.9gr 2893 2901 2889

QL aangepassing - burnrate factor afbring na 0.584 om te kalibreer
Voorspelling
47.2gr 3041
49.8gr 3205

Enige insette sal help asb

Groete

[tripodmvr]

Ek Saterdag my seun gehelp met sy nuwe 308 Howa en wil net graag bevestig of my QL kalibrering reg is
Wapen  308 Howa 1500
Loop Lengte 557mm
Doppe Remington met H2O (fire formed) 57.3gr
Toets tyd : 11:30 ? 12:00
Crony ? 4m van tromp
Dop Lengte 51mm

Hornady 165 SP Interlock (#3040)
Overall Lengte 65.5
Max TPL 70.2 mm
Kruit gebruik S 335  Lot 698
Primer ? Murom Large Rifle
40.9 gr 2498 2508 2496
41.3gr 2539 2534 2539

QL aangepassing - burnrate factor afbring na 0.595 om te kalibreer
Voorspelling

43.4gr 2642

Hornady 110 XTP (#3010)
Overall Lengte 71.5
Max TPL 72.5 mm
Kruit gebruik S 335  Lot 698
Primer ? Murom Large Rifle
44.4 gr 2841 2842 2830
44.9gr 2893 2901 2889

QL aangepassing - burnrate factor afbring na 0.584 om te kalibreer
Voorspelling
47.2gr 3041
49.8gr 3205

Enige insette sal help asb

Groete

Het bloot die burning rate aangepas na 0,536 en temp na 80F vir die 165 gr en die gee my dan 2 nodes op 2500 (40,7) en 2615 (42,6). Sal nou na die 110gr loer en later terugvoer gee.

[Johan Reyneke]

Tripod
Skuus ek het AOL en Max van 2 koeels omgeruil

165 moet 71.5
110 moet 65.5 wees

[Johan Reyneke]

Tripod
Kan jy asb ook kyk na die OBT berekening

Barrel length [inch] 21.93

Barrel time        [ms]
Node 1 0.748
Node 2 0.821
Node 3 0.936
Node 4 1.010
Node 5 1.123
Node 6 1.198
Node 7 1.311

[tripodmvr]

Weet nie hoe jy bereken het nie, maar Excel aan jou gestuur op e-pos.

Nuwe berekende gegewens met 80F temperatuur.

165gr
BRF = 0,58
41,1      2526vps
43,2      2639

110gr
BRF = 0,585
47.1        3040vps
49,6        3200vps

[Hingsding]

Dag se manne.

Nog n ql lading benodig asb. Enige hulp sal waardeer word.

idiale Node spoed? begin lading? begin tpl?

Geweer = .308 Remington 700 tactical sps
Loop = bull-barrel 20 inch
Twist = 1- 12
Doppe = Lapua
dop lengte = 50.95mm
dop kap. met water is 54.4gn h2o
maks tpl 73.8mm
projektiel = Nosler partiton 150g spritzer P/N 16329
Kruit = 335
primer = Fiocchi large rilfe


Baie dankie en vriendelike groete.

[Jacques van Eeden]

Dag se manne.

Nog n ql lading benodig asb. Enige hulp sal waardeer word.

idiale Node spoed? begin lading? begin tpl?

Geweer = .308 Remington 700 tactical sps
Loop = bull-barrel 20 inch
Twist = 1- 12 Het hulle nie 'n 1-10 twist nie?
Doppe = Lapua
dop lengte = 50.95mm
dop kap. met water is 54.4gn h2o
maks tpl 73.8mm
projektiel = Nosler partiton 150g spritzer P/N 16329
Kruit = 335


primer = Fiocchi large rilfe


Baie dankie en vriendelike groete.

[Hingsding]

Dag se Jacques222.

Ons het orals op die internet rond gekrap en almal se dis n 1-12 twist.

Groete.