QL Request 25-06 edition

[nhenry]

Can one of you kind gents run a couple loads for me?

25-06, 24" 1:7.5 tw barrel
1) 115gr Ballistic Tips, H4831, Hornady brass, CCI 200
2) 121gr Hammer Hunters, H4831, Hornady brass, CCI 200

The first one I think will be a ballistic duplicate of a 280 Ackley load I'm developing, but Nosler excluded the powder for the 115s in 25-06's data in #9.
The second is just something I was wondering about. I loaded some that shot lights out and forgot a chrono.

Thanks a bunch

Noah

 

[DrMike]

When projecting with QL, there is no parameter for primers. The recommendation is to use the primer that has the least brisance that will still give you complete ignition. Again, with only a couple of exceptions, the loads projected are not based upon brass manufacturer, but upon measured case volume. Having said that, here are the projections you requested.\

Cartridge          : .25-06 Rem.
Bullet             : .257, 121, Hammer HH
Useable Case Capaci: 58.227 grain H2O = 3.781 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4831 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   95    49.68   2772    2065   45025  11334     94.5    1.318
-09.0   96    50.23   2805    2114   46659  11470     95.0    1.297
-08.0   97    50.78   2838    2164   48358  11602     95.5    1.276
-07.0   98    51.34   2871    2214   50127  11730     96.0    1.255
-06.0   99    51.89   2903    2265   51952  11853     96.4    1.235
-05.0  101    52.44   2936    2316   53838  11971     96.9    1.215
-04.0  102    52.99   2969    2368   55793  12084     97.3    1.196  ! Near Maximum !
-03.0  103    53.54   3001    2420   57819  12193     97.6    1.177  ! Near Maximum !
-02.0  104    54.10   3034    2473   59921  12296     98.0    1.158  ! Near Maximum !
-01.0  105    54.65   3066    2527   62102  12394     98.3    1.140  ! Near Maximum !
+00.0  106    55.20   3099    2580   64365  12487     98.6    1.122  ! Near Maximum !
+01.0  107    55.75   3131    2635   66714  12574     98.9    1.104  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    56.30   3164    2690   69154  12654     99.1    1.087  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    56.86   3196    2745   71689  12729     99.3    1.070  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    57.41   3229    2801   74323  12798     99.5    1.053  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    57.96   3261    2857   77061  12861     99.6    1.036  !DANGEROUS LOAD-DO NOT USE!

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    106    55.20   3239    2818   76993  12206    100.0    1.040  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    55.20   2908    2272   52162  12131     92.9    1.229

Cartridge          : .25-06 Rem.
Bullet             : .257, 115, Nosler BalTip 25115
Useable Case Capaci: 60.107 grain H2O = 3.903 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4831 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   94    50.76   2834    2050   45728  11454     94.1    1.291
-09.0   95    51.32   2866    2098   47314  11593     94.7    1.271
-08.0   96    51.89   2899    2146   48957  11729     95.1    1.251
-07.0   97    52.45   2931    2194   50661  11860     95.6    1.232
-06.0   98    53.02   2964    2243   52423  11988     96.1    1.212
-05.0  100    53.58   2997    2293   54242  12110     96.5    1.193
-04.0  101    54.14   3029    2343   56121  12229     96.9    1.175  ! Near Maximum !
-03.0  102    54.71   3062    2394   58066  12343     97.3    1.157  ! Near Maximum !
-02.0  103    55.27   3095    2445   60082  12452     97.7    1.139  ! Near Maximum !
-01.0  104    55.84   3127    2497   62172  12556     98.0    1.121  ! Near Maximum !
+00.0  105    56.40   3160    2549   64340  12655     98.3    1.104  ! Near Maximum !
+01.0  106    56.96   3192    2602   66589  12748     98.6    1.087  !DANGEROUS LOAD-DO NOT USE!
+02.0  107    57.53   3225    2656   68923  12836     98.8    1.071  !DANGEROUS LOAD-DO NOT USE!
+03.0  108    58.09   3257    2709   71346  12918     99.1    1.054  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    58.66   3290    2764   73862  12995     99.3    1.038  !DANGEROUS LOAD-DO NOT USE!
+05.0  110    59.22   3322    2818   76476  13065     99.5    1.022  !DANGEROUS LOAD-DO NOT USE!

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    105    56.40   3304    2787   76472  12432    100.0    1.025  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    56.40   2966    2247   52542  12241     92.4    1.207

Either load will give you some fine performance. That's for sure.

 

[Jimbeaux82]

Noah,

I just had a custom 25/06 built with a 1/7 twist 24” barrel on a Model 70 action. I worked up a load last week almost identical to what you ask except I used IMR 4831, 115 gr NBT, Hornady brass, CCI 200, 52.0 grs , 3080 fps , .775” group. While it shot the 117-110 gr bullets well, it really liked the 100 gr bullets even better. This surprised me with this fast twist designed for the heavier bullets.

Jimbeaux

 

[Guy Miner]

I don't often use H4831 with the 25-06, but when I do, it does real well.

You guys and your fast-twist barrels... If I ever replace my 25-06 barrel, I'll go with a faster twist as well.

Guy

 

[nhenry]

When projecting with QL, there is no parameter for primers. The recommendation is to use the primer that has the least brisance that will still give you complete ignition. Again, with only a couple of exceptions, the loads projected are not based upon brass manufacturer, but upon measured case volume. Having said that, here are the projections you requested.\

Oh my bad; I apologize. I'm rather new to the QL stuff, so I was just going off of what parameters other people have used in their threads.

Thanks a bunch for running the loads. According to the calculator, if I can get a good load around max, I'll be practically matching my 280 AI load's trajectory out to at least 700 (140gr Partition going 3180). I wouldn't shoot further than 350-400 anyways.

I started to get surprised at the 121 gr hammer's projected velocities, but then I remembered how fast you can push em. I loaded them with 57gr of H4831 and got a nice cloverleaf. I ran out of them after that; I just got a sample pack of 15. I didn't hit any pressure signs, so that's good.

Thanks again!

 

[nhenry]

Noah,

I just had a custom 25/06 built with a 1/7 twist 24” barrel on a Model 70 action. I worked up a load last week almost identical to what you ask except I used IMR 4831, 115 gr NBT, Hornady brass, CCI 200, 52.0 grs , 3080 fps , .775” group. While it shot the 117-110 gr bullets well, it really liked the 100 gr bullets even better. This surprised me with this fast twist designed for the heavier bullets.

Jimbeaux

I wish I would have used a 1:7 for the 128 Hammers but mine shoots so well I figure it's okay.

I have almost the exact same load as you with IMR 4831 but with 115gr Partitions (the old style with the longer, sleeker profile). Mine gets 5/8" all day and I used it to kill a deer this past season.

What really gets my goat is how well it shoots 117gr SSTs. This is a 5 shot group:

I haven't done much work with it and 100gr bullets, but I have hundreds of them so I might have to eventually.

Post a picture of your rifle! I'd like to see it!

 

[nhenry]

I don't often use H4831 with the 25-06, but when I do, it does real well.

You guys and your fast-twist barrels... If I ever replace my 25-06 barrel, I'll go with a faster twist as well.

Guy

It's definitely worth it if you ever burn out your current barrel!

If you ever do, make sure to do a video with Gavin about it!

 

[AFG270]

N

I wish I would have used a 1:7 for the 128 Hammers but mine shoots so well I figure it's okay.

I have almost the exact same load as you with IMR 4831 but with 115gr Partitions (the old style with the longer, sleeker profile). Mine gets 5/8" all day and I used it to kill a deer this past season.

What really gets my goat is how well it shoots 117gr SSTs. This is a 5 shot group:
View attachment 16913
I haven't done much work with it and 100gr bullets, but I have hundreds of them so I might have to eventually.

Post a picture of your rifle! I'd like to see it!

Excellent shooting, Noah!

 

[nhenry]

N

Excellent shooting, Noah!

Thank ya!

 

[DrMike]

Oh my bad; I apologize. I'm rather new to the QL stuff, so I was just going off of what parameters other people have used in their threads.

Thanks a bunch for running the loads. According to the calculator, if I can get a good load around max, I'll be practically matching my 280 AI load's trajectory out to at least 700 (140gr Partition going 3180). I wouldn't shoot further than 350-400 anyways.

I started to get surprised at the 121 gr hammer's projected velocities, but then I remembered how fast you can push em. I loaded them with 57gr of H4831 and got a nice cloverleaf. I ran out of them after that; I just got a sample pack of 15. I didn't hit any pressure signs, so that's good.

Thanks again!

Not a matter for which an apology is needed. I mentioned it only to explain why I don't include data detailing which primer to use or which brass to use. You can refine the loading data by measuring case volume. Deoxygenate water by allowing to sit out uncovered overnight, which drives off free oxygen. Then tare your once-fired brass before adding the deoxygenated water with a pipette until you form a convex meniscus. That data will refine projections making them more precise still.

Oh, and that is some fine shooting. It qualifies as a group deserving of bragging rights. I know of people that laminated groups that were far less worthy of being praised.

 

[nhenry]

Not a matter for which an apology is needed. I mentioned it only to explain why I don't include data detailing which primer to use or which brass to use. You can refine the loading data by measuring case volume. Deoxygenate water by allowing to sit out uncovered overnight, which drives off free oxygen. Then tare your once-fired brass before adding the deoxygenated water with a pipette until you form a convex meniscus. That data will refine projections making them more precise still.

Oh, and that is some fine shooting. It qualifies as a group deserving of bragging rights. I know of people that laminated groups that were far less worthy of being praised.

Thanks for the information! I'll take note of that.

Thanks for the compliment as well-- means a lot. I wish I would have kept the target now

I'm pretty happy that the barrel shoots them well, but I wish the SST was a tougher bullet than it is.