Hoogste node spoed met 308 loop lengtes

[LUAN]

Goeie naand lede en voorspoed met die nuwe jaar. Ek het n jeuk ontwikkel om my 308 se loop korter en dunner te sny. Ek het besluit om Impala se 130gr hp te probeer en gou n lading geskiet om spoed te meet. Details as volg

Loop lengte- 662mm
Lapua dop vol- 56.1gr
Dop lengte- 51mm
Koel- Impala 130gr hp
Kruit- Riflex groen (S321) lot 014rfl22
46gr- 3030fps
Tpl- 69.7mm
Max tpl- 74.8mm
Rem std primer

Ek sal graag wil weet wat is die huidige hoogste node spoed haalbaar en dan ook met 18 en 20" lengte indien moontlik.

Baie dankie

[tripodmvr]

Ek het nodes so naby 57K psi gekies.

26 duim loop 3090vps
20 duim loop 2950vps
18 duim loop 2850vps

Syfers is rowwe berekenwerk en kan so 20vps weerskante toe verskil. Behoort jou egter 'n idee van werkverrigting te gee. Ek sou vir lawaai en spoed eerder na 20 duim mik.

[LUAN]

Ek het nodes so naby 57K psi gekies.

26 duim loop 3090vps
20 duim loop 2950vps
18 duim loop 2850vps

Syfers is rowwe berekenwerk en kan so 20vps weerskante toe verskil. Behoort jou egter 'n idee van werkverrigting te gee. Ek sou vir lawaai en spoed eerder na 20 duim mik.

Dankie tripod

As ek n kruit soos N135 of N140 gebruik sal daar n hoër node wees met die korter lope?

[tripodmvr]

Hier is 'n QL voorspelling vir die beste dryfmiddels om met 20 duim loop maksimum 57000psi te gebruik asook 'n redelike vol dop. S321 vaar verbasend goed


Cartridge : .308 Win.
Bullet : .308, 130, Impala LWHV LS Bullet
Useable Case Capaci: 48.028 grain H2O = 3.118 cm³
Cartridge O.A.L. L6: 2.744 inch = 69.70 mm
Barrel Length : 20.0 inch = 508.0 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 57000 psi, or 393 MPa
or a maximum loading ratio or filling of 100 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

24 loads produced a Loading Ratio below user-defined minimum of 80%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Winchester 748 98,8 47,1 3,05 2961 97,5 57000 9279 0,926 ! Near Maximum !
Nitrochemie A/S 0300 90,7 41,2 2,67 2933 100,0 57000 8424 0,936 ! Near Maximum !
ADI AR 2219 93,3 42,7 2,76 2921 99,4 57000 8670 0,931 ! Near Maximum !
Hodgdon H322 99,3 42,7 2,76 2921 99,4 57000 8670 0,931 ! Near Maximum !
Hodgdon H335 93,7 45,3 2,93 2920 98,8 57000 8865 0,935 ! Near Maximum !
SNPE Vectan SP 10 93,2 44,1 2,86 2916 98,7 57000 8831 0,939 ! Near Maximum !
PB Clermont PCL 508 *C (PCL223) 93,2 44,2 2,86 2915 98,7 57000 8819 0,939 ! Near Maximum !
Somchem S321 98,2 46,8 3,03 2915 96,9 57000 9086 0,941 ! Near Maximum !
PB Clermont PCL 507 *C 100,0 46,2 2,99 2914 96,6 56889 9039 0,937 ! Near Maximum !
Bofors RP11 TZ *CT approximation 100,0 43,1 2,79 2912 100,0 53498 8292 0,952 ! Near Maximum !
Hodgdon BL-C2 100,0 48,3 3,13 2910 95,9 54382 9333 0,953 ! Near Maximum !
SF033 fl, russ. 5,45x39 93,7 42,4 2,75 2910 100,0 57000 7984 0,949 ! Near Maximum !
Vihtavuori N530 *C 99,0 44,1 2,86 2906 96,7 57000 8931 0,937 ! Near Maximum !
Alliant AR-Comp *C *T 100,0 42,8 2,78 2898 100,0 52547 8272 0,959 ! Near Maximum !
ReloadSwiss RS 40 96,9 43,7 2,83 2898 97,9 57000 8739 0,939 ! Near Maximum !
Alliant Reloder-10x *C 96,5 40,3 2,61 2891 100,0 57000 8169 0,948 ! Near Maximum !
Lovex D073.5 97,0 46,1 2,99 2891 97,5 57000 8766 0,954 ! Near Maximum !
Accurate 2460 96,7 46,1 2,99 2891 97,5 57000 8766 0,954 ! Near Maximum !
Ramshot Wild Boar 100,0 47,3 3,07 2887 94,4 54829 9104 0,949 ! Near Maximum !
Accurate 2520 100,0 46,7 3,02 2887 97,7 53602 8993 0,968 ! Near Maximum !
Alliant Reloder-12 98,8 44,6 2,89 2885 99,4 57000 8414 0,938 ! Near Maximum !
Lovex D073.4 95,2 45,2 2,93 2878 97,4 57000 8608 0,951 ! Near Maximum !
Accurate 2015 99,4 42,1 2,73 2876 100,0 57000 8118 0,954 ! Near Maximum !
Hodgdon CFE BLKR 86,9 43,9 2,85 2873 100,0 57000 7755 0,936 ! Near Maximum !
Accurate 2230 96,1 46,1 2,99 2871 95,8 57000 8648 0,948 ! Near Maximum !
Norma 200 *C 92,6 40,1 2,60 2870 100,0 57000 7959 0,964 ! Near Maximum !
ADI AR 2210 93,8 42,9 2,78 2864 97,4 57000 8497 0,942 ! Near Maximum !
IMR 8208 XBR 100,0 44,3 2,87 2864 96,2 55088 8736 0,953 ! Near Maximum !
Ramshot X-Terminator *C 97,8 46,2 2,99 2864 94,8 57000 8696 0,944 ! Near Maximum !
Ramshot TAC *C 100,0 47,7 3,09 2859 91,3 56661 8857 0,945 ! Near Maximum !
Accurate 2200 91,0 40,9 2,65 2857 98,2 57000 8310 0,941 ! Near Maximum !
ADI BM2 91,7 43,2 2,80 2855 97,4 57000 8416 0,944 ! Near Maximum !
Hodgdon Benchmark 99,6 43,4 2,81 2854 97,2 57000 8420 0,944 ! Near Maximum !
IMR 4198 95,6 37,9 2,46 2852 100,0 57000 7553 0,933 ! Near Maximum !
Hodgdon H4895 100,0 44,3 2,87 2846 94,6 52160 9002 0,977 ! Near Maximum !
ADI AR 2207 91,0 37,6 2,44 2846 100,0 57000 7465 0,949 ! Near Maximum !
Accurate 2495 100,0 43,3 2,81 2845 99,6 50281 8801 1,018
Accurate 1680 83,4 38,5 2,50 2840 99,8 57000 7881 0,941 ! Near Maximum !
Lovex D060 81,8 33,8 2,19 2837 100,0 57000 7663 0,939 ! Near Maximum !
Vihtavuori N130 *C 99,1 41,0 2,66 2836 100,0 57000 7697 0,949 ! Near Maximum !
Somchem S341 100,0 47,6 3,09 2836 93,8 53314 8702 0,962 ! Near Maximum !
Alliant Reloder-7 90,3 38,7 2,51 2835 100,0 57000 7630 0,953 ! Near Maximum !
Bofors RP1 NT *C ~approximation 91,6 39,3 2,55 2832 99,1 57000 7902 0,936 ! Near Maximum !
ADI AR 2206H 100,0 44,3 2,87 2830 93,8 51843 8929 0,981 ! Near Maximum !
Rottweil R901 100,0 42,1 2,73 2830 98,1 53508 8574 0,993 ! Near Maximum !
Kazan Sunar 308W 94,4 40,9 2,65 2826 100,0 57000 7673 0,951 ! Near Maximum !
Hodgdon H4198 92,2 38,3 2,48 2823 99,2 57000 7768 0,938 ! Near Maximum !
SNPE Vectan SP 7 100,0 47,5 3,08 2822 91,2 53836 8737 0,970 ! Near Maximum !
ReloadSwiss RS 36 85,8 37,0 2,40 2820 100,0 57000 7306 0,946 ! Near Maximum !
Lovex D073.6 100,0 45,6 2,96 2819 96,9 49666 8826 1,001
Norma 202 *C 100,0 43,6 2,82 2813 97,8 50592 8606 0,991
SNPE Vectan SP 9 100,0 45,7 2,96 2803 93,3 50679 8768 0,984
Bofors RP2 NT *C ~approximation 100,0 43,9 2,85 2802 94,8 53659 8368 0,965 ! Near Maximum !
Vihtavuori N120 *C 93,4 37,8 2,45 2798 100,0 57000 6954 0,952 ! Near Maximum !
Hodgdon H4227 86,5 35,0 2,27 2797 100,0 57000 7020 0,941 ! Near Maximum !
Vihtavuori N125 *C 88,2 36,3 2,35 2793 100,0 57000 6949 0,953 ! Near Maximum !
ADI AR 2206 100,0 43,8 2,84 2791 95,0 54341 8218 0,963 ! Near Maximum !
IMR 4227 85,9 34,8 2,26 2785 100,0 57000 6987 0,941 ! Near Maximum !
PB Clermont PCL 516 100,0 47,2 3,06 2783 90,2 50327 8719 0,987
IMR 3031 100,0 41,4 2,68 2782 98,5 45225 8659 1,021
Lovex S060 100,0 43,1 2,79 2777 94,2 53084 8244 0,974 ! Near Maximum !
IMR 4895 100,0 44,3 2,87 2776 92,4 47148 8967 1,015
Norma 201 *C 100,0 43,3 2,81 2774 95,1 50056 8586 1,010
ReloadSwiss RS 30 86,1 33,6 2,17 2768 100,0 57000 6641 0,951 ! Near Maximum !
Somchem S335 100,0 43,3 2,81 2766 98,7 51796 8003 0,995 ! Near Maximum !

[grantrist@gmail.com]

Tripod

Very interesting on the powder choices and different speeds.

For different bullet weights using a 20 inch barrel, say 165grn bullet would this list change?

I have just bought a tikka roughtech in 308 with 20inch barrell.

Thank you

Grant