Powder charge for RL17 for a 7mm wsm.

pete dobinson

pete dobinson

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Has anyone here got experience with RL17. I'm looking for a starter load for my 7mm wsm using 168gr LR Accubonds. I can't find much info on it. Thanks in advance.
 
I've shot RL16 with 162gr ELDx, PM me and I can share the load. RL17 is literally same burn rate just not as temp stable
 
In my experience, you can use a h4350 or imr 4350 charge weights and not get into trouble with rl17. Be careful around the max published loads of course.
 
pete dobinson said:
I checked that out, I was just wondering what others were using on this forum. I was thinking 59 grains might be a good start. Thanks.
Click to expand...

Seems a bit high, judging by the numbers Tod ran through Quickload for me a while back (and assuming what he says about RL16 burn rate being the same as RL17 is true).

Code: 
Cartridge          : 7 mm WSM
Bullet             : .284, 162, Hornady ELD-X 2840
Useable Case Capaci: 70.240 grain H2O = 4.561 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 60000 psi, or 413 MPa
or a maximum loading ratio or filling of 103 %
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 !

34 loads produced a Loading Ratio below user-defined minimum of 85%. 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 RL26                        91.7     63.9     4.14    3036   100.0    60000   12629   1.179  ! Near Maximum !
Alliant RL25                       100.8     64.9     4.21    3032   100.0    60000   12390   1.165  ! Near Maximum !
IMR 7828                            99.4     62.6     4.05    3006    98.7    60000   12849   1.163  ! Near Maximum !
IMR 7828ssc                         94.1     62.6     4.05    3006    98.7    60000   12849   1.163  ! Near Maximum !
AA MagPro                           95.1     65.5     4.24    2995    97.0    60000   13320   1.180  ! Near Maximum !
Alliant RL22                        95.0     62.2     4.03    2983    99.4    60000   12692   1.181  ! Near Maximum !
Ramshot Magnum                      95.5     67.3     4.36    2980    99.8    60000   12251   1.170  ! Near Maximum !
Alliant RL33                       103.0     72.3     4.69    2969    94.1    54502   14063   1.220
Hodgdon H1000                      103.0     66.0     4.27    2959    98.5    57629   12507   1.174  ! Near Maximum !
Alliant RL23                        96.9     61.4     3.98    2953   100.0    60000   11365   1.190  ! Near Maximum !
Alliant RL19                        92.3     59.8     3.87    2943    99.3    60000   12115   1.182  ! Near Maximum !
Hodgdon Retumbo                    103.0     67.1     4.35    2939    99.8    52327   12891   1.214
Ramshot Hunter                      88.0     58.8     3.81    2934   100.0    60000   11644   1.189  ! Near Maximum !
Alliant RL16                        88.9     56.0     3.63    2928   100.0    60000   11077   1.194  ! Near Maximum !
Hodgdon H4831                       97.6     61.4     3.98    2921    98.0    60000   12024   1.179  ! Near Maximum !
Hodgdon H4831sc                     93.8     61.4     3.98    2921    98.0    60000   12024   1.179  ! Near Maximum !
IMR 4955 Enduron                    95.3     60.0     3.89    2892    98.2    60000   11680   1.186  ! Near Maximum !
IMR 4831                            91.6     56.8     3.68    2890   100.0    60000   10858   1.205  ! Near Maximum !
Hodgdon H4350                       90.4     57.3     3.71    2885    99.7    60000   11187   1.192  ! Near Maximum !
IMR 4350                            88.7     57.1     3.70    2885    99.8    60000   11161   1.193  ! Near Maximum !
IMR 4451 Enduron                    85.4     54.6     3.54    2872    99.9    60000   10984   1.194  ! Near Maximum !
Hodgdon Hybrid 100V                 89.7     56.2     3.64    2869   100.0    60000   10232   1.200  ! Near Maximum !
IMR 4166 Enduron                    85.3     52.9     3.43    2853    99.9    60000   10723   1.186  ! Near Maximum !
IMR 7977 Enduron                   100.1     64.1     4.15    2832    91.4    60000   11356   1.188  ! Near Maximum !

56gr RL16 giving 60000psi and 2928fps with a 162eldx.
 
Suther said:
Seems a bit high, judging by the numbers Tod ran through Quickload for me a while back (and assuming what he says about RL16 burn rate being the same as RL17 is true).

Code: 
Cartridge          : 7 mm WSM
Bullet             : .284, 162, Hornady ELD-X 2840
Useable Case Capaci: 70.240 grain H2O = 4.561 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 60000 psi, or 413 MPa
or a maximum loading ratio or filling of 103 %
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 !

34 loads produced a Loading Ratio below user-defined minimum of 85%. 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 RL26                        91.7     63.9     4.14    3036   100.0    60000   12629   1.179  ! Near Maximum !
Alliant RL25                       100.8     64.9     4.21    3032   100.0    60000   12390   1.165  ! Near Maximum !
IMR 7828                            99.4     62.6     4.05    3006    98.7    60000   12849   1.163  ! Near Maximum !
IMR 7828ssc                         94.1     62.6     4.05    3006    98.7    60000   12849   1.163  ! Near Maximum !
AA MagPro                           95.1     65.5     4.24    2995    97.0    60000   13320   1.180  ! Near Maximum !
Alliant RL22                        95.0     62.2     4.03    2983    99.4    60000   12692   1.181  ! Near Maximum !
Ramshot Magnum                      95.5     67.3     4.36    2980    99.8    60000   12251   1.170  ! Near Maximum !
Alliant RL33                       103.0     72.3     4.69    2969    94.1    54502   14063   1.220
Hodgdon H1000                      103.0     66.0     4.27    2959    98.5    57629   12507   1.174  ! Near Maximum !
Alliant RL23                        96.9     61.4     3.98    2953   100.0    60000   11365   1.190  ! Near Maximum !
Alliant RL19                        92.3     59.8     3.87    2943    99.3    60000   12115   1.182  ! Near Maximum !
Hodgdon Retumbo                    103.0     67.1     4.35    2939    99.8    52327   12891   1.214
Ramshot Hunter                      88.0     58.8     3.81    2934   100.0    60000   11644   1.189  ! Near Maximum !
Alliant RL16                        88.9     56.0     3.63    2928   100.0    60000   11077   1.194  ! Near Maximum !
Hodgdon H4831                       97.6     61.4     3.98    2921    98.0    60000   12024   1.179  ! Near Maximum !
Hodgdon H4831sc                     93.8     61.4     3.98    2921    98.0    60000   12024   1.179  ! Near Maximum !
IMR 4955 Enduron                    95.3     60.0     3.89    2892    98.2    60000   11680   1.186  ! Near Maximum !
IMR 4831                            91.6     56.8     3.68    2890   100.0    60000   10858   1.205  ! Near Maximum !
Hodgdon H4350                       90.4     57.3     3.71    2885    99.7    60000   11187   1.192  ! Near Maximum !
IMR 4350                            88.7     57.1     3.70    2885    99.8    60000   11161   1.193  ! Near Maximum !
IMR 4451 Enduron                    85.4     54.6     3.54    2872    99.9    60000   10984   1.194  ! Near Maximum !
Hodgdon Hybrid 100V                 89.7     56.2     3.64    2869   100.0    60000   10232   1.200  ! Near Maximum !
IMR 4166 Enduron                    85.3     52.9     3.43    2853    99.9    60000   10723   1.186  ! Near Maximum !
IMR 7977 Enduron                   100.1     64.1     4.15    2832    91.4    60000   11356   1.188  ! Near Maximum !

56gr RL16 giving 60000psi and 2928fps with a 162eldx.
Click to expand...

I just got back from shooting before seeing this chart, I guess my load of 58 gr was a little high but had no signs of pressure. Ave velocity was 2900 fps. Thanks for the chart. :)
 
58.0grs giving 2900 fps would be approx 58k psi. Warm but not hot! You may be able to work up to the 59.5gr range for close to 3000 fps with your lot #'s of powder, bullets, brass, primer. Although if I was to bet, I'd say somewhere in the 57.5/2890 fps from 24" barrel range would yield the most consistent accuracy
 
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