Hi all
Would it be possible for someone to run some details of a load for me through your Quickload programme (or similar) and let me know the resulting velocity.
Hornady .277 130gr SP Interlock #2730
52.5 gr Hodgdon H4350
Federal 210 primer
Norma brass
C.O.L 3.180"
Sako 85 20" barrel
Thank you in advance.
Prov
Quickload data
Moderator: dromia
Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
Re: Quickload data
.270 Winchester?
In 1978 I was told by my grand dad that the secret to rifle accuracy is, a quality bullet, fired down a quality barrel..... How has that changed?
Guns dont kill people. Dads with pretty Daughters do...!
Guns dont kill people. Dads with pretty Daughters do...!
Re: Quickload data
The COL at 3.180" seems a little short, this is the QL prediction for information only and I would always suggest working up to be on the safe side, also QL3.6 used will not take the primers into account
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Hornady SST InterLock 27302
Useable Case Capaci: 58.535 grain H2O = 3.801 cm³
Cartridge O.A.L. L6: 3.180 inch = 80.77 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.381% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-03.8 95 50.10 2703 2109 48202 12132 94.1 1.105
-03.4 95 50.34 2716 2130 48876 12197 94.3 1.097
-03.0 96 50.58 2729 2150 49561 12261 94.5 1.090
-02.7 96 50.82 2742 2171 50255 12324 94.7 1.083
-02.3 97 51.06 2755 2191 50959 12387 94.9 1.076
-01.9 97 51.30 2768 2212 51672 12449 95.1 1.069
-01.5 98 51.54 2781 2233 52396 12510 95.3 1.062
-01.1 98 51.78 2795 2254 53130 12571 95.5 1.055
-00.8 99 52.02 2808 2275 53874 12631 95.7 1.048
-00.4 99 52.26 2821 2297 54629 12690 95.9 1.041
+00.0 99 52.50 2834 2318 55395 12748 96.0 1.035 ! Near Maximum !
+00.4 100 52.74 2847 2339 56172 12806 96.2 1.028 ! Near Maximum !
+00.8 100 52.98 2860 2361 56960 12863 96.4 1.021 ! Near Maximum !
+01.1 101 53.22 2873 2382 57759 12920 96.6 1.015 ! Near Maximum !
+01.5 101 53.46 2886 2404 58569 12975 96.7 1.008 ! Near Maximum !
+01.9 102 53.70 2899 2426 59391 13030 96.9 1.001 ! Near Maximum !
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 99 52.50 2973 2551 65154 12847 99.5 0.961 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 52.50 2657 2037 45817 12094 89.0 1.129
Cartridge : .270 Win. (SAAMI)
Bullet : .277, 130, Hornady SST InterLock 27302
Useable Case Capaci: 58.535 grain H2O = 3.801 cm³
Cartridge O.A.L. L6: 3.180 inch = 80.77 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.381% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-03.8 95 50.10 2703 2109 48202 12132 94.1 1.105
-03.4 95 50.34 2716 2130 48876 12197 94.3 1.097
-03.0 96 50.58 2729 2150 49561 12261 94.5 1.090
-02.7 96 50.82 2742 2171 50255 12324 94.7 1.083
-02.3 97 51.06 2755 2191 50959 12387 94.9 1.076
-01.9 97 51.30 2768 2212 51672 12449 95.1 1.069
-01.5 98 51.54 2781 2233 52396 12510 95.3 1.062
-01.1 98 51.78 2795 2254 53130 12571 95.5 1.055
-00.8 99 52.02 2808 2275 53874 12631 95.7 1.048
-00.4 99 52.26 2821 2297 54629 12690 95.9 1.041
+00.0 99 52.50 2834 2318 55395 12748 96.0 1.035 ! Near Maximum !
+00.4 100 52.74 2847 2339 56172 12806 96.2 1.028 ! Near Maximum !
+00.8 100 52.98 2860 2361 56960 12863 96.4 1.021 ! Near Maximum !
+01.1 101 53.22 2873 2382 57759 12920 96.6 1.015 ! Near Maximum !
+01.5 101 53.46 2886 2404 58569 12975 96.7 1.008 ! Near Maximum !
+01.9 102 53.70 2899 2426 59391 13030 96.9 1.001 ! Near Maximum !
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 99 52.50 2973 2551 65154 12847 99.5 0.961 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 99 52.50 2657 2037 45817 12094 89.0 1.129
-
Provider
Re: Quickload data
Thanks Ovenpaa
The COL was taken from Hodgon powder tub. The interlock ring sits just at case mouth so looks ok. My next step it to increase COL anyway.
Thanks again for your help
The COL was taken from Hodgon powder tub. The interlock ring sits just at case mouth so looks ok. My next step it to increase COL anyway.
Thanks again for your help
Who is online
Users browsing this forum: No registered users and 9 guests