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QL vir 308 Win
Posted: Mon Apr 16, 2012 3:00 pm
by 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
Re: Quickload 308 Win help
Posted: Sat Jul 14, 2012 8:31 am
by 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
Re: Quickload 308 Win help
Posted: Sat Jul 14, 2012 9:25 am
by tripodmvr
Reggie Gerber wrote:
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.
Re: Quickload 308 Win help
Posted: Sat Jul 14, 2012 9:38 am
by 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
Re: Quickload 308 Win help
Posted: Sat Jul 14, 2012 11:23 am
by tripodmvr
Reggie Gerber wrote:
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.
Re: Quickload 308 Win help
Posted: Sat Jul 14, 2012 12:36 pm
by Reggie Gerber
thanks Tripod
I am aware that the bullet is not seated very deep so wont load for a longer col
Reggie
Re: QL vir 308 Win
Posted: Mon Nov 05, 2012 6:35 pm
by 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
Re: QL vir 308 Win
Posted: Mon Nov 05, 2012 7:10 pm
by tripodmvr
Johan Reyneke wrote:
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.
Re: QL vir 308 Win
Posted: Mon Nov 05, 2012 7:13 pm
by Johan Reyneke
Tripod
Skuus ek het AOL en Max van 2 koeels omgeruil
165 moet 71.5
110 moet 65.5 wees
Re: QL vir 308 Win
Posted: Mon Nov 05, 2012 7:25 pm
by 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
Re: QL vir 308 Win
Posted: Mon Nov 05, 2012 8:05 pm
by 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
Re: QL vir 308 Win
Posted: Wed Oct 09, 2013 12:29 pm
by 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.
Re: QL vir 308 Win
Posted: Wed Oct 09, 2013 12:55 pm
by Jacques van Eeden
Hingsding wrote: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.
Re: QL vir 308 Win
Posted: Wed Oct 09, 2013 1:10 pm
by Hingsding
Dag se Jacques222.
Ons het orals op die internet rond gekrap en almal se dis n 1-12 twist.
Groete.