300 WSM Compressed Loads

How accurate is the software you guys are using? I have a pound of Reloder 17coming and would like to work up a load with 180 accubonds, CCI 250 primers. I can seat up to 2.9"- can anyone give advice on a starting point and where to work up to?
 
This should give you a decent starting point. My rifle took a few grains over this to get into 3000FPS, but I am not sure of your rifles chamber.

Cartridge : .300 WSM (CIP)
Bullet : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 70.087 grain H2O = 4.551 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 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 74 50.40 2468 2435 34514 8780 97.6 1.490
-18.0 76 51.66 2524 2546 36750 8988 98.3 1.454
-16.0 78 52.92 2580 2660 39124 9181 98.8 1.412
-14.0 80 54.18 2635 2775 41647 9359 99.3 1.372
-12.0 82 55.44 2689 2891 44327 9519 99.6 1.332
-10.0 84 56.70 2744 3009 47175 9663 99.9 1.295
-08.0 86 57.96 2797 3128 50204 9788 100.0 1.259
-06.0 87 59.22 2850 3247 53426 9896 100.0 1.224
-04.0 89 60.48 2903 3368 56859 9999 100.0 1.190 ! Near Maximum !
-02.0 91 61.74 2955 3490 60514 10100 100.0 1.158 ! Near Maximum !
+00.0 93 63.00 3006 3612 64409 10198 100.0 1.127 !DANGEROUS LOAD-DO NOT USE!
+02.0 95 64.26 3057 3735 68568 10293 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
+04.0 97 65.52 3108 3860 73005 10385 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
+06.0 99 66.78 3158 3986 77741 10474 100.0 1.041 !DANGEROUS LOAD-DO NOT USE!
+08.0 100 68.04 3208 4113 82822 10560 100.0 1.014 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 69.30 3257 4241 88225 10642 100.0 0.988 !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 93 63.00 3096 3831 76547 9860 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 63.00 2869 3290 53123 10575 99.2 1.222
 
What version of QL are you running? Mine is data Dec 2012 and show different results than yours. Did you tweak something?

Code: 
 Cartridge          : .300 WSM (CIP)
Bullet             : .308, 180, Nosler AccuBond 54825
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length      : 24.0 inch or 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   74    50.40   2407    2315   30593   8904     97.1    1.572
-18.0   76    51.66   2464    2427   32602   9127     97.9    1.531
-16.0   78    52.92   2521    2540   34742   9333     98.6    1.492
-14.0   80    54.18   2577    2655   37023   9521     99.1    1.453
-12.0   82    55.44   2633    2772   39453   9690     99.6    1.409
-10.0   84    56.70   2689    2890   42045   9839     99.8    1.368
-08.0   86    57.96   2744    3010   44810   9967    100.0    1.329
-06.0   87    59.22   2799    3130   47760  10076    100.0    1.291
-04.0   89    60.48   2852    3252   50911  10178    100.0    1.254
-02.0   91    61.74   2906    3374   54279  10278    100.0    1.218  ! Near Maximum !
+00.0   93    63.00   2958    3498   57881  10375    100.0    1.185  ! Near Maximum !
+02.0   95    64.26   3010    3622   61736  10469    100.0    1.152  ! Near Maximum !
+04.0   97    65.52   3062    3747   65863  10560    100.0    1.120  !DANGEROUS LOAD-DO NOT USE!
+06.0   99    66.78   3113    3874   70286  10648    100.0    1.090  !DANGEROUS LOAD-DO NOT USE!
+08.0  100    68.04   3164    4002   74996  10732    100.0    1.060  !DANGEROUS LOAD-DO NOT USE!
+10.0  102    69.30   3215    4131   80027  10814    100.0    1.032  !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     93    63.00   3060    3742   70353   9998    100.0    1.100  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     93    63.00   2802    3138   46662  10777     99.0    1.297
 
I got mine in June of 2012, so I am not sure of the exact version. Didn't tweak anything that I know of.

Maybe Mike will know why there is a difference.
 
...maybe this is why you guys don't like RL-17, I'm using Alliant's data for the .25 WSSM, .300 & .325 WSM, near max loads, no pressure signs/ very good accuracy/ velocity...
 
Alliant lists a load with 66 grains so Steve's numbers must be right? What is everyone's personal experience? I don't have my distance to lands measurement handy, but am shooting a Sako A7 if that helps
 
SJB358":36numxfr said:
Maybe Mike will know why there is a difference.
Click to expand...

There were adjustments in burn rates listed as data was updated. Also, I note that the data steve4102 lists does not give useable case capacity. My measured case capacity on my rifle is considerably larger than what you list, Scotty, which allows for a higher charge without pressure signs. I suspect similar differentials exists between your data and Steve's. Note the difference in burn rates listed at the bottom of each set of data. While the changes appear minor, they are actually rather significant.

Steve's Data Set:
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 93 63.00 3060 3742 70353 9998 100.0 1.100 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value: -Ba 93 63.00 2802 3138 46662 10777 99.0 1.297
Click to expand...

Scotty's Data Set:
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 93 63.00 3096 3831 76547 9860 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value: -Ba 93 63.00 2869 3290 53123 10575 99.2 1.222
Click to expand...

The latest data set was released 20 December 2012.
 
Thank you Mike. Clears it up. I will spring for the update after the New Year I believe, but even still, it works pretty well for generic runs. Until you get a usable case capacity for the individual rifle, its a shotgun blast where the data will run. With the case capacity, it usually tightens up the data a little more.
 
Also, I note that the data steve4102 lists does not give useable case capacity.
Click to expand...

Yeah, why is that? I have the case capacity and usable case capacity on my main page, but when I punch up the data page it is not listed like others I've seen.

Any Idea how I can tweak QL to add this to my data page?
 
SJB358":3pp8pn4m said:
I will spring for the update after the New Year.
Click to expand...

There should be another update toward the end of the year. I continue looking on the Neconos website to see if they have listed anything for an update.
 
I gotta say I'm more confused now than before. Alliant lists a load at 66; both quickloads say dangerous do not use. I'm not sure where to start and stop. Maybe I'll email Alliant
 
bob_dobalina":q8vjckko said:
I gotta say I'm more confused now than before. Alliant lists a load at 66; both quickloads say dangerous do not use. I'm not sure where to start and stop. Maybe I'll email Alliant
Click to expand...


You are missing one important part of Alliant's on-line data. That is they list only the Max load. They also instruct the handloader to reduce this published Max load by 10% to Start.

So you really do have a "Starting point" of about 60gr and a "Published" max of 66gr. The 66gr is not your max, it is Alliant's Max, you should work up from 60+gr to find your max.
 
steve4102":1ww5cgge said:
bob_dobalina":1ww5cgge said:
I gotta say I'm more confused now than before. Alliant lists a load at 66; both quickloads say dangerous do not use. I'm not sure where to start and stop. Maybe I'll email Alliant
Click to expand...


You are missing one important part of Alliant's on-line data. That is they list only the Max load. They also instruct the handloader to reduce this published Max load by 10% to Start.

So you really do have a "Starting point" of about 60gr and a "Published" max of 66gr. The 66gr is not your max, it is Alliant's Max, you should work up from 60+gr to find your max.
Click to expand...

I agree.. You might find some magic in there as well.
 
Maximum published loads are pressure tested and verified for the system in which they are developed. That is why you always start low (usually 10%) and work up to a safe maximum in your fire system.
 
Max. loads today are lawyerized for lawsuit avoidance and often do not represent the max load at all. You need to use a chronograph and watch carefully for pressure signs to find your maximum loads!

Nosler #4 for instance is much higher than #7 for listed max loads.
 
Well now I have 2 pounds of powder without good load data (RL 17 and H4350) and I don't know if I have the experience you guys have to work up a good load... I don't have a chronograph. I have seen a lot of people post 64 grains of H4350 with 180 ABs but that seems to butt right up against the 65K SAAMI max PSI, and I don't feel too good about making loads off of data from (other) internet forums.

So, I planned on working up the following with H4350 60,61,62,63; does that seem reasonable?

Another question - the online Nosler 7 manual lists 64 gr Hybrid H100V as MAX load - Hogdon lists this as 58,900 PSI, well below max SAAMI. Is it a max load simply from case volume?
 
bob_dobalina":18xea95o said:
Well now I have 2 pounds of powder without good load data (RL 17 and H4350) and I don't know if I have the experience you guys have to work up a good load... I don't have a chronograph. I have seen a lot of people post 64 grains of H4350 with 180 ABs but that seems to butt right up against the 65K SAAMI max PSI, and I don't feel too good about making loads off of data from (other) internet forums.

So, I planned on working up the following with H4350 60,61,62,63; does that seem reasonable?

Another question - the online Nosler 7 manual lists 64 gr Hybrid H100V as MAX load - Hogdon lists this as 58,900 PSI, well below max SAAMI. Is it a max load simply from case volume?
Click to expand...

QL projection for 180 grain AB and RL17:

Code: 
Cartridge          : .300 WSM (CIP)
Bullet             : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 70.084 grain H2O = 4.550 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 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   76    51.60   2462    2422   32519   9116     97.9    1.528
-18.0   78    52.89   2520    2538   34708   9327     98.6    1.490
-16.0   80    54.18   2578    2656   37043   9520     99.1    1.452
-14.0   82    55.47   2635    2776   39535   9692     99.6    1.408
-12.0   84    56.76   2692    2897   42196   9844     99.8    1.366
-10.0   86    58.05   2748    3019   45039   9974    100.0    1.326
-08.0   88    59.34   2804    3143   48079  10084    100.0    1.287
-06.0   89    60.63   2859    3267   51331  10188    100.0    1.249
-04.0   91    61.92   2914    3393   54812  10290    100.0    1.213  ! Near Maximum !
-02.0   93    63.21   2967    3519   58542  10388    100.0    1.179  ! Near Maximum !
+00.0   95    64.50   3021    3647   62542  10484    100.0    1.145  ! Near Maximum !
+02.0   97    65.79   3073    3775   66832  10577    100.0    1.113  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    67.08   3126    3905   71432  10666    100.0    1.082  !DANGEROUS LOAD-DO NOT USE!
+06.0  101    68.37   3178    4037   76337  10752    100.0    1.052  !DANGEROUS LOAD-DO NOT USE!
+08.0  103    69.66   3230    4169   81590  10834    100.0    1.024  !DANGEROUS LOAD-DO NOT USE!
+10.0  105    70.95   3281    4304   87222  10913    100.0    0.996  !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     95    64.50   3118    3886   75927  10114    100.0    1.065  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     95    64.50   2870    3293   50306  10954     99.5    1.253

The following suggests near maximum loads with the same bullet and alternate powders. You can see that H4350 will work, though it may not be the best powder. Only testing will verify whether it is what you want to use or not.

Code: 
Cartridge          : .300 WSM (CIP)
Bullet             : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 70.084 grain H2O = 4.550 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: 62000 psi, or 427 MPa
or a maximum loading ratio or filling of 107 %
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 !

10 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
---------------------------------  -----------------------------------------------------------------
Norma MRP                          105.8     71.3     4.62    3070    99.7    62000   11879   1.146  ! Near Maximum !
Vihtavuori N560                    107.0     70.6     4.58    3040    97.2    60958   12024   1.153  ! Near Maximum !
IMR 7828 SSC                       105.8     70.2     4.55    3034    97.7    62000   11653   1.137  ! Near Maximum !
Accurate MAGPRO                    107.0     73.5     4.76    3018    95.7    60240   12019   1.164  ! Near Maximum !
ADI AR 2213                        106.7     69.7     4.52    3018    97.6    62000   11537   1.138  ! Near Maximum !
Alliant Reloder-17                  94.9     64.3     4.17    3014   100.0    62000   10472   1.150  ! Near Maximum !
Elcho 17                            94.9     64.3     4.17    3014   100.0    62000   10472   1.150  ! Near Maximum !
Alliant Reloder-22                 107.0     69.9     4.53    3012    98.7    60383   11596   1.163  ! Near Maximum !
Raufoss RA15                       107.0     69.9     4.53    3012    98.7    60383   11596   1.163  ! Near Maximum !
Bofors RP5/NP ~approximation       107.0     69.9     4.53    3012    98.7    60383   11596   1.163  ! Near Maximum !
Ramshot Magnum                     107.0     75.3     4.88    3002    99.2    61512   11107   1.146  ! Near Maximum !
ADI AR 2209                        103.5     66.5     4.31    2987    98.6    62000   10999   1.144  ! Near Maximum !
Alliant Reloder-19                 104.2     67.3     4.36    2986    98.7    62000   11074   1.151  ! Near Maximum !
PB Clermont PCL 511                 96.5     66.4     4.30    2986    99.9    62000   10780   1.157  ! Near Maximum !
Ramshot Hunter                      99.7     66.5     4.31    2984    99.9    62000   10765   1.157  ! Near Maximum !
Hodgdon H414                        94.1     64.3     4.17    2980    99.6    62000   10781   1.159  ! Near Maximum !
Winchester 760                      94.1     64.3     4.17    2980    99.6    62000   10781   1.159  ! Near Maximum !
Somchem S365                       101.6     65.3     4.23    2979   100.0    62000    9992   1.164  ! Near Maximum !
Bofors RP14 ~approximation         104.9     67.8     4.39    2979    98.7    62000   10992   1.152  ! Near Maximum !
Norma URP                           99.2     63.4     4.11    2963   100.0    62000   10297   1.165  ! Near Maximum !
Vihtavuori N550                     96.3     63.6     4.12    2963   100.0    62000   10431   1.169  ! Near Maximum !
Bofors RP19 ~approximation          99.2     63.4     4.11    2963   100.0    62000   10294   1.165  ! Near Maximum !
Accurate 4350                       98.4     63.6     4.12    2960   100.0    62000   10264   1.181  ! Near Maximum !
Norma 204                           98.7     65.9     4.27    2960    98.5    62000   10769   1.153  ! Near Maximum !
Raufoss RA4                        101.9     65.9     4.27    2960    98.5    62000   10769   1.153  ! Near Maximum !
Bofors RP4 ~approximation          101.9     65.9     4.27    2960    98.5    62000   10769   1.153  ! Near Maximum !
Hodgdon H4831 SC                   105.3     68.7     4.45    2955    96.9    62000   10855   1.149  ! Near Maximum !
Somchem S385                       104.4     68.2     4.42    2950    99.3    62000   10593   1.171  ! Near Maximum !
IMR 4831                           104.1     64.4     4.17    2945   100.0    62000   10072   1.173  ! Near Maximum !
SNPE Vectan SP 12                  107.0     73.8     4.78    2944    97.1    55485   11592   1.196  ! Near Maximum !
PB Clermont PCL 517                107.0     73.8     4.78    2939    96.9    55163   11592   1.199  ! Near Maximum !
Rottweil R905                      107.0     68.6     4.45    2939    96.6    58238   11127   1.185  ! Near Maximum !
Bofors RP4 NT ~approximation        99.5     65.3     4.23    2938    99.5    62000   10402   1.166  ! Near Maximum !
Winchester Supreme 780             102.6     69.9     4.53    2936    98.5    62000   10495   1.157  ! Near Maximum !
Rottweil R904                      102.7     65.4     4.24    2927    97.7    62000   10472   1.157  ! Near Maximum !
Winchester WXR                     107.0     68.4     4.43    2927    97.7    54994   11367   1.213  ! Near Maximum !
Bofors RP15                        107.0     68.4     4.43    2927    97.7    54994   11367   1.213  ! Near Maximum !
Alliant Reloder-15                  90.2     58.3     3.77    2922   100.0    62000    9781   1.171  ! Near Maximum !
Bofors RP11 ~approximation          90.2     58.3     3.77    2922   100.0    62000    9781   1.171  ! Near Maximum !
Raufoss RA11                        90.2     58.3     3.77    2922   100.0    62000    9781   1.171  ! Near Maximum !
Hodgdon Hybrid 100V                101.8     63.6     4.12    2922   100.0    62000    9476   1.164  ! Near Maximum !
Lovex S070                          98.7     63.1     4.09    2922    99.6    62000   10225   1.175  ! Near Maximum !
Hodgdon H4350                      101.4     64.1     4.15    2921    99.2    62000   10191   1.160  ! Near Maximum !
IMR 4350                            99.5     64.0     4.14    2920    99.3    62000   10171   1.160  ! Near Maximum !
Accurate 3100                      107.0     69.1     4.48    2919    99.8    60401   10288   1.197  ! Near Maximum !
Norma 203B                          90.6     58.5     3.79    2918   100.0    62000    9703   1.173  ! Near Maximum !
Hodgdon H380                        91.5     60.4     3.91    2918   100.0    62000    9934   1.175  ! Near Maximum !
Norma 203 old                       91.9     60.0     3.89    2907   100.0    62000    9553   1.186  ! Near Maximum !
Bofors RP3                          91.9     60.0     3.89    2907   100.0    62000    9553   1.186  ! Near Maximum !
Rottweil R903                       93.9     60.0     3.89    2902   100.0    62000    9472   1.186  ! Near Maximum !
Elcho TR140 - preliminary data      91.1     60.8     3.94    2902   100.0    62000    9672   1.171  ! Near Maximum !
Bofors RP7                          96.4     61.1     3.96    2900    99.3    62000   10044   1.170  ! Near Maximum !
Rottweil R907                       96.4     61.1     3.96    2900    99.3    62000   10044   1.170  ! Near Maximum !
IMR 4007 SSC                        93.3     61.2     3.96    2899    99.3    62000   10037   1.170  ! Near Maximum !
Lovex S065                          97.5     61.6     3.99    2899    99.9    62000    9845   1.176  ! Near Maximum !
Somchem S355                        94.1     59.5     3.85    2898   100.0    62000    9487   1.180  ! Near Maximum !
Somchem S361                       101.6     69.9     4.53    2893    96.9    62000   10248   1.168  ! Near Maximum !
IMR 7828                           107.0     67.2     4.35    2887    95.9    52894   11212   1.223
ADI AP 2214                        107.0     71.8     4.65    2886    96.2    54620   11063   1.204  ! Near Maximum !
Hodgdon H4831                      107.0     67.2     4.35    2883    96.0    57154   10632   1.192  ! Near Maximum !
Bofors RP5 NT ~approximation       107.0     70.5     4.57    2878    94.0    55711   10965   1.200  ! Near Maximum !
Alliant Reloder-25                 107.0     68.8     4.46    2867    99.5    49410   11140   1.262
Accurate 4064                       91.4     57.7     3.74    2862   100.0    62000    8949   1.208  ! Near Maximum !
Vihtavuori N165                    107.0     68.4     4.43    2855    98.4    56553   10148   1.209  ! Near Maximum !
Rottweil R902                       90.2     56.2     3.64    2854   100.0    62000    8963   1.185  ! Near Maximum !
Accurate 2700                       93.4     63.0     4.08    2850    99.1    62000    9471   1.175  ! Near Maximum !
Vihtavuori N160                    107.0     66.3     4.29    2839    96.7    57248   10068   1.202  ! Near Maximum !

Nosler lists H110V as a maximum load because it approximates maximum pressure. Pressure spikes pretty dramatically as charge is increased with this powder.

Code: 
Cartridge          : .300 WSM (CIP)
Bullet             : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 70.084 grain H2O = 4.550 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Hybrid 100V

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   82    50.96   2390    2283   32181   8267     97.7    1.550
-18.0   84    52.23   2445    2390   34378   8454     98.4    1.511
-16.0   86    53.51   2501    2499   36726   8627     99.0    1.472
-14.0   88    54.78   2555    2610   39238   8782     99.4    1.429
-12.0   90    56.06   2610    2722   41926   8921     99.7    1.386
-10.0   92    57.33   2664    2835   44801   9041     99.9    1.345
-08.0   94    58.60   2717    2950   47852   9143    100.0    1.306
-06.0   96    59.88   2769    3066   51090   9231    100.0    1.268
-04.0   98    61.15   2822    3182   54544   9317    100.0    1.232  ! Near Maximum !
-02.0  100    62.43   2873    3299   58230   9399    100.0    1.197  ! Near Maximum !
+00.0  102    63.70   2924    3417   62168   9479    100.0    1.163  ! Near Maximum !
+02.0  104    64.97   2975    3537   66378   9556    100.0    1.131  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    66.25   3025    3657   70883   9629    100.0    1.100  !DANGEROUS LOAD-DO NOT USE!
+06.0  108    67.52   3075    3779   75707   9700    100.0    1.069  !DANGEROUS LOAD-DO NOT USE!
+08.0  110    68.80   3124    3902   80881   9766    100.0    1.041  !DANGEROUS LOAD-DO NOT USE!
+10.0  112    70.07   3174    4026   86437   9829    100.0    1.013  !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    63.70   3014    3630   74552   9128    100.0    1.085  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    63.70   2785    3101   49975   9903     99.4    1.269
 
I thought max PSI for the 300 WSM was 65K. How big of a difference would 2.9" seating depth make? And what primer is QuickLoad assuming? I am using CCI 250. Thanks.
 
QL makes no assumption on primer. My recommendation is to use the coolest primer to still give ignition. I do use a lot of CCI250 primers in my WSMs, though I tend to use LR primers for the most part except in extremely cold conditions or with ball powders. Seating depth can alter pressure, but not as much as you might expect. Moreover, note the velocities relative to the pressures and you'll see that as you near maximum, velocity does not increase as much as you might anticipate.
 
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