Hr.Uhlenflut schrieb:Zu.338 Federal
Hier geht's zu wie in der Formel 1.Bei immer weniger
Hubraum immer mehr PS. Was ist da blos für ein
Wunderkraut drin. Könnten uns doch die längeren
Hülsen sparen. Warte dringenst auf die neue
8mmS.auf .223 Hülse. Möchte dann Natürlich vom
Kurzsystem das Kurzsystem mit 35cm Lauf.
Wenn wir dann da noch das Wunderkraut v.
Wunderkraut reinstopfen haben wir Leistung
wie in der 8x68 S.
Hoffentlich erlebe ich das noch.
Gruß u.WaiHei Hr.Uhlenflut
zB
**** Input data: Date: 17-Sep-2009 Time: 01:21:09
Cartridge................. = .338 Federal
Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail
Max.avg.pressure(Piezo Wil)= 415 MPa Shot start / init pressure = 15 MPa
Projectile weight (g)= 9.01 Groove caliber (mm)= 8.59
Length of cartridge (mm)= 71.12 Length of case (mm)= 51.16
Case capacity (cu.cm)= 3.73 Length of projectile (mm)= 30.48
Length of barrel (mm)= 560
**** Values calculated:
Seating depth (mm)= 10.52 Volume displaced (cu.cm)= 0.61
Comb.chamber volume (cu.cm)= 3.13 Projectile travel (cm)= 51.94
**** Input data:
Propellant type........... = Nitrochemie A/S 0300
Charge weight...........(g)= 3.04 Load density......(g/cu.cm)= 0.972
Heat of Explosion (kJ/kg)= 3950 Ratio of spec. heats cp/cv = 1.2401
Solid density (g/cu.cm)= 1.62 Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.675 Pro-/degressivity factor a = 0.94
Burning limit ......... z1 = 0.5 Combust.Chamber Vb(m³)= 3.126347E-6
Factor.................. b = 1.7 X-S.Area of Bore A(m²)= 5.695021E-5
Bulk density (g/cu.cm)= 0.944 Projectile mass mp(kg)= 9.007E-3
Loading ratio (%)= 103.0 Projectile travel x(m)= 5.1936E-1
**** Results calculated:
Maximum pressure ........ = 400 MPa Way of projectile at Pmax = 32.7 mm
Muzzle velocity ......Ve = 949 m/s Muzzle pressure .......Pe = 48 MPa
Project. energy at muzzle = 4053 J Fraction of powder burnt = 99.8 %
Projectile travel time from 10% Pmax to muzzle = 0.92 ms