Efficient load development

B

bob_dobalina

Handloader
Oct 6, 2009
344
50
I would like to work up a load for a 100 gr. bullet in my 25-06 factory Remington with Reloder 17. Alliance lists 53 as a max, so I would like to work from 47.7 to 53. What is the most efficient way to do this?

I was thinking 3 rounds each at .5 intervals, pick the best and play with seating? Or is there a better way? Maybe I'll miss something or approach max too quickly taking big jumps like this. I just don't want to shoot a million rounds. Thanks
 
Looking at a QL projection with 100 grain Partitions, and I see several things that would guide me in working up a load.

Code: 
Cartridge          : .25-06 Rem.
Bullet             : .257, 100, Nosler PART SP 16317
Useable Case Capaci: 62.198 grain H2O = 4.038 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   73    44.16   2762    1693   32904  10732     97.2    1.413
-18.0   75    45.26   2827    1775   35148  10994     98.0    1.377
-16.0   77    46.37   2893    1858   37542  11234     98.7    1.339
-14.0   79    47.47   2958    1943   40095  11449     99.3    1.297
-12.0   81    48.58   3022    2028   42826  11638     99.7    1.259
-10.0   83    49.68   3086    2114   45743  11801     99.9    1.221
-08.0   84    50.78   3149    2201   48860  11935    100.0    1.185
-06.0   86    51.89   3210    2289   52193  12052    100.0    1.150
-04.0   88    52.99   3272    2377   55750  12166    100.0    1.117  ! Near Maximum !
-02.0   90    54.10   3332    2465   59517  12276    100.0    1.085  ! Near Maximum !
+00.0   92    55.20   3391    2554   63518  12384    100.0    1.054  ! Near Maximum !
+02.0   94    56.30   3450    2643   67778  12487    100.0    1.025  !DANGEROUS LOAD-DO NOT USE!
+04.0   95    57.41   3508    2733   72314  12588    100.0    0.996  !DANGEROUS LOAD-DO NOT USE!
+06.0   97    58.51   3566    2823   77148  12685    100.0    0.969  !DANGEROUS LOAD-DO NOT USE!
+08.0   99    59.62   3623    2915   82303  12778    100.0    0.942  !DANGEROUS LOAD-DO NOT USE!
+10.0  101    60.72   3680    3007   87805  12867    100.0    0.917  !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     92    55.20   3505    2728   76333  11992    100.0    0.979  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     92    55.20   3217    2298   51046  12847     99.4    1.156

First, I likely have some room to play. Then, RL17 may not be the most efficient powder or provide the best results.

Code: 
Cartridge          : .25-06 Rem.
Bullet             : .257, 100, Nosler PART SP 16317
Useable Case Capaci: 62.198 grain H2O = 4.038 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64500 psi, or 444 MPa
or a maximum loading ratio or filling of 110 %
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 !

11 loads produced a Loading Ratio below user-defined minimum of 90%. 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
---------------------------------  -----------------------------------------------------------------
Alliant Reloder-26                 101.5     62.6     4.05    3476   100.0    64500   13746   1.056  ! Near Maximum !
Norma MRP                          102.5     61.3     3.97    3453    99.7    64500   13899   1.051  ! Near Maximum !
Vihtavuori N560                    104.3     61.1     3.96    3446    97.6    64500   14178   1.046  ! Near Maximum !
Alliant Reloder-25                 110.0     62.7     4.06    3437   100.0    63309   13348   1.051  ! Near Maximum !
IMR 7828 SSC                       103.0     60.6     3.93    3436    98.1    64500   13761   1.036  ! Near Maximum !
IMR 7828                           108.8     60.6     3.93    3436    98.1    64500   13761   1.036  ! Near Maximum !
Accurate MAGPRO                    104.4     63.6     4.12    3428    96.4    64500   14175   1.054  ! Near Maximum !
Alliant Reloder-22                 104.6     60.6     3.93    3422    99.0    64500   13677   1.051  ! Near Maximum !
Winchester WXR                     107.4     60.9     3.95    3420    98.9    64500   13684   1.051  ! Near Maximum !
Alliant Reloder-17                  92.2     55.5     3.59    3405   100.0    64500   12408   1.047  ! Near Maximum !
Ramshot Magnum                     104.0     65.0     4.21    3394    99.5    64500   13015   1.046  ! Near Maximum !
Alliant Reloder-23                 107.1     60.1     3.89    3391   100.0    64500   12411   1.057  ! Near Maximum !
Alliant Reloder-19                 101.5     58.2     3.77    3381    98.9    64500   13078   1.046  ! Near Maximum !
Winchester 760                      91.7     55.6     3.60    3379    99.7    64500   12803   1.051  ! Near Maximum !
Hodgdon H414                        91.7     55.6     3.60    3379    99.7    64500   12803   1.051  ! Near Maximum !
Ramshot Hunter                      97.0     57.4     3.72    3377    99.9    64500   12711   1.052  ! Near Maximum !
Norma URP                           96.7     54.8     3.55    3360   100.0    64500   12232   1.056  ! Near Maximum !
Vihtavuori N550                     93.9     55.0     3.57    3359   100.0    64500   12364   1.059  ! Near Maximum !
Norma 204                           96.3     57.0     3.70    3359    98.7    64500   12766   1.045  ! Near Maximum !
Accurate 4350                       95.8     54.9     3.56    3353   100.0    64500   12206   1.073  ! Near Maximum !
Vihtavuori N570                    110.0     66.5     4.31    3352    92.3    56799   14807   1.107  ! Near Maximum !
Hodgdon H4831                      106.7     59.5     3.85    3350    97.3    64500   12839   1.043  ! Near Maximum !
Hodgdon H4831 SC                   102.6     59.5     3.85    3350    97.3    64500   12839   1.043  ! Near Maximum !
Norma MRP 2                        110.0     63.1     4.09    3348    97.6    58316   13915   1.103  ! Near Maximum !
IMR 4831                           101.4     55.7     3.61    3337   100.0    64500   11960   1.065  ! Near Maximum !
Winchester Supreme 780              99.9     60.4     3.91    3324    98.8    64500   12374   1.052  ! Near Maximum !
Accurate 3100                      104.6     60.0     3.89    3321    99.9    64500   12154   1.079  ! Near Maximum !
Vihtavuori N165                    106.8     60.6     3.93    3318    99.2    64500   12186   1.056  ! Near Maximum !
Hodgdon Hybrid 100V                 99.2     55.0     3.57    3314   100.0    64500   11298   1.056  ! Near Maximum !
IMR 4007 SSC                        91.4     53.2     3.45    3305    99.4    64500   12000   1.053  ! Near Maximum !
Vihtavuori N160                    107.0     58.8     3.81    3304    97.9    64500   12192   1.049  ! Near Maximum !
Hodgdon H1000                      110.0     62.4     4.04    3287    97.0    57698   13052   1.088  ! Near Maximum !

Using RL17 may be understandable if that is what is available, however. In that instance, dropping back to 47 grains and working up in 0.5 grain increments may be too small an increment to be counted as efficient. Because of the projected velocities, I'd be inclined to begin at around 49 grains and work up in two grain increments. Based on QL, I'd be inclined to begin at 51 grains and work up in two grain increments. You'll see very quickly whether a load shows potential or not even at these larger increments. This is my experience. As the saying goes, YMMV.
 
My 2 cents.... I tried re 17 twice in my 2506. I did not get good accuracy either time but I did not give it a fair test with just two tries and two different bullets. in the charts above the powders with a little more speed than re 17 are pretty highly compressed or a little hard to find. That said re 22 is my favorite powder in the 2506 and it is for a lot of other people.
Both times I tried re 17 in my 2506 it tracked perfectly with quick load so I would definitely go along with Mike's workup ideas as shown in the chart above. Fwiw....the 110 AccuBond is showing some promise in my 2506... and I'm working hard to get it super consistent. The one bullet my gun really likes across a couple different powders is very accurate is the 117 Hornady bt.
 
See now I'm glad I asked! That changes how I'll do things. Well I have read online quite a few people talking RL17 up for velocity and accuracy even if it doesn't pencil out, and I have it so I thought I'd give it a try for a 100 gr. antelope load. I'd love to try other powders but I need to start using what I have, which is RL17, RL19, IMR7828, H4350, and Retumbo. How is your list of powders sorted?
 
When you get started make sure you have a long Mikes chart so you can make sure your velocities are tracking close to what is on there... I see he dialed in a 24-inch barrel of that would be a little different than a 22.
The powider chart listed up above goes by the fastest speed at equal pressure..... but the pressure is set at 64 K which is top pressure you would ever want to get close to.
 
bob_dobalina":23zxmxda said:
How is your list of powders sorted?
Click to expand...

From highest velocity generated to lowest. Velocities are not that different. If you chose to use RL19 or IMR 7828, you wouldn't see a great difference in velocity.
 
Is IMR 7977 too new to be in the QuickLoad data? That powder sure looks interesting. I was surprised no retumbo either - that must be better for the heavier bullets?
 
I'd take a hard look at the 115 gr BT with Retumbo.
That would make for an excellent long range antelope load. ;)

JD338
 
7977 is a virtual twin to re 25 in burn rate. Another new powder on the market which is really giving a monster boost to the 270 Winchester and would probably play fantastically well in the 2506 is Re 26.
 
RL26 has been amazing in my 25-06 with 100 grain Etips. Nearly 3400 and very good accuracy.
 
SJB358":1cgdpnip said:
RL26 has been amazing in my 25-06 with 100 grain Etips. Nearly 3400 and very good accuracy.
Click to expand...

What primer are you using in this load?

How much powder?
 
JD338":q32gpln1 said:
I'd take a hard look at the 115 gr BT with Retumbo.
That would make for an excellent long range antelope load. ;)

JD338
Click to expand...

I use Retumbo with my 120 Partition load, never tried the 115. I do have about 2 pounds of it though. I kind of had my heart set on 100 grainers though - I bought a box of 100 gr TTSXs - I actually bought two then thought better of it. I do have a box of 110 Accubonds I've never tried as well but wanted to try the 100s.

RL26 sounds awesome - probably one of those hard to get ones eh?
 
MAinAR":30bai2o6 said:
SJB358":30bai2o6 said:
RL26 has been amazing in my 25-06 with 100 grain Etips. Nearly 3400 and very good accuracy.
Click to expand...

What primer are you using in this load?

How much powder?
Click to expand...


CCIBR2. Tried the CCI250's and the BR2'a trumped them accuracy wise. Doesn't seem to be a hard powder to light off.
 
Awesome setup.....laser beam speed.....a the bullet with a bc that pretty much matches most 120 Cup n cores... and on game performance that most likely actually exceeds 120 cup n cores!
 
Once you pick your powder do a OCW test by Dan Newberry to start your load development

My wife thinks I only have 3 guns
 
I hate to be a pain but DrMike could you (or anyone else) run the quickload for RL17 and RL26 for a 100 gr Barnes TTSX? I'm wishing I bought e-tips now but oh well...
 
Cartridge : .25-06 Rem.
Bullet : .257, 100, Barnes 'TTSX'BT 30220
Useable Case Capaci: 60.237 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Code: 
Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   73    42.80   2765    1698   33907  10350     97.3    1.352
-18.0   75    43.87   2829    1776   36088  10599     98.1    1.322
-16.0   77    44.94   2892    1857   38413  10828     98.7    1.293
-14.0   79    46.01   2954    1938   40894  11035     99.3    1.264
-12.0   81    47.08   3017    2021   43539  11220     99.6    1.236
-10.0   83    48.15   3078    2104   46363  11380     99.9    1.208
-08.0   85    49.22   3140    2189   49379  11515    100.0    1.181
-06.0   86    50.29   3200    2274   52597  11631    100.0    1.152
-04.0   88    51.36   3260    2359   56043  11743    100.0    1.120  ! Near Maximum !
-02.0   90    52.43   3318    2445   59721  11852    100.0    1.089  ! Near Maximum !
+00.0   92    53.50   3376    2531   63616  11957    100.0    1.058  ! Near Maximum !
+02.0   94    54.57   3434    2619   67746  12060    100.0    1.029  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    55.64   3491    2706   72145  12158    100.0    1.001  !DANGEROUS LOAD-DO NOT USE!
+06.0   97    56.71   3548    2795   76834  12254    100.0    0.974  !DANGEROUS LOAD-DO NOT USE!
+08.0   99    57.78   3604    2884   81836  12345    100.0    0.948  !DANGEROUS LOAD-DO NOT USE!
+10.0  101    58.85   3660    2974   87176  12433    100.0    0.923  !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 92 53.50 3489 2702 76169 11575 100.0 0.984 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 92 53.50 3206 2282 51473 12393 99.3 1.158


Cartridge : .25-06 Rem.
Bullet : .257, 100, Barnes 'TTSX'BT 30220
Useable Case Capaci: 60.237 grain H2O = 3.911 cm³
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Code: 
Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   81    48.48   2723    1646   31289  11099     92.9    1.416
-18.0   83    49.69   2796    1736   33512  11450     94.3    1.380
-16.0   85    50.90   2870    1829   35918  11779     95.6    1.344
-14.0   87    52.12   2944    1925   38524  12082     96.8    1.308
-12.0   89    53.33   3019    2024   41349  12356     97.8    1.273
-10.0   91    54.54   3093    2125   44417  12598     98.6    1.239
-08.0   93    55.75   3168    2228   47748  12807     99.2    1.205
-06.0   95    56.96   3242    2333   51374  12979     99.7    1.172
-04.0   97    58.18   3315    2440   55324  13113     99.9    1.134
-02.0   99    59.39   3388    2549   59635  13206    100.0    1.096  ! Near Maximum !
+00.0  102    60.60   3460    2659   64348  13280    100.0    1.059  ! Near Maximum !
+02.0  104    61.81   3532    2770   69489  13348    100.0    1.024  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    63.02   3603    2882   75054  13411    100.0    0.990  !DANGEROUS LOAD-DO NOT USE!
+06.0  108    64.24   3673    2996   81113  13468    100.0    0.957  !DANGEROUS LOAD-DO NOT USE!
+08.0  110    65.45   3743    3112   87728  13519    100.0    0.925  !DANGEROUS LOAD-DO NOT USE!
+10.0  112    66.66   3813    3229   94965  13564    100.0    0.894  !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 102 60.60 3617 2905 80671 12719 100.0 0.968 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 60.60 3221 2303 50011 13549 97.2 1.177
 
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