I have been using some Reloader 7 for some 50 Alaskan loads. My supply is slowly drying up. Local supplies are not plentiful. Have been wanting to try a slightly faster powder for this fairly large straight wall case. Any suggestions.
1)Was wondering how AA2015 might do in this case?
2)Would AA1680 be too fast?
3)Any experience or suggestions using the Vihtavouri powders N120,N130, N133, etc.?
4)Any other suggestions.

Thanks, Mike

Mike I have no clue. Never saw one much less loaded for one. Just for your info here is QL powders listed by velocity. Using 46,000 and 105% capacity as the cut off. Your 1680 actually forcasts higher than the RL7

Cartridge          : .50 Alaskan
Bullet             : .510, 570, Hornady DGS 5150
Useable Case Capaci: 27.278 grain H2O = 1.771 cm³
Cartridge O.A.L. L6: 2.300 inch = 58.42 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 46000 psi, or 317 MPa
or a maximum loading ratio or filling of 105 %
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 !

Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Winchester 296                      99.5     26.9     1.74    1444    97.6    46000    1534   1.788  !DANGEROUS LOAD-DO NOT USE!
Hodgdon Lil'Gun                    101.4     26.5     1.72    1442   100.0    46000    1346   1.768  !DANGEROUS LOAD-DO NOT USE!
Hodgdon H110                        99.8     26.9     1.74    1410    99.0    46000    1421   1.817  !DANGEROUS LOAD-DO NOT USE!
Nitrochemie A/S 0200               105.0     26.4     1.71    1373    96.4    44085    1366   1.861  ! Near Maximum !
Norma R123                          88.2     22.2     1.44    1355   100.0    46000    1056   1.864  !DANGEROUS LOAD-DO NOT USE!
Accurate 1680                      105.0     28.4     1.84    1319    85.7    42485    1358   1.923  ! Near Maximum !
Vihtavuori N110                    105.0     22.4     1.45    1310   100.0    37976    1170   1.959
Somchem S265                       105.0     24.3     1.57    1277    96.5    39658    1193   2.003  ! Near Maximum !
IMR 4227                           105.0     24.2     1.57    1260    91.4    36005    1239   2.032
Hodgdon H4227                      105.0     24.2     1.57    1255    91.8    33980    1260   2.054
Lovex-S0531                        105.0     23.7     1.53    1250    95.3    31974    1234   2.080
Norma 200                          105.0     27.3     1.77    1199    83.2    24600    1346   2.234
ADI AR 2207                        105.0     24.7     1.60    1193    88.1    25700    1293   2.229
Alliant Reloder- 7                 105.0     25.5     1.66    1182    83.8    26703    1238   2.230
Nitrochemie A/S 0300               105.0     27.1     1.76    1174    78.5    26280    1301   2.250
Bofors RP1 NT ~approximation       105.0     25.6     1.66    1158    76.7    30223    1120   2.219
Vihtavuori N120                    105.0     24.1     1.56    1155    89.0    24544    1189   2.295
Ramshot X-Terminator               105.0     28.3     1.83    1151    73.3    26387    1231   2.279
Accurate 2200                      105.0     26.8     1.74    1150    73.2    28637    1158   2.249
Hodgdon H4198                      105.0     24.8     1.61    1149    77.3    29662    1096   2.239
IMR 4198                           105.0     23.7     1.53    1137    81.8    25944    1131   2.299
ADI BM2                            105.0     28.1     1.82    1136    70.7    27832    1142   2.280
ADI AR 2219                        105.0     27.3     1.77    1121    71.3    25795    1174   2.328
SNPE Vectan SP 10                  105.0     28.2     1.83    1118    69.9    24853    1182   2.346
PB Clermont PCL 508                105.0     28.3     1.83    1118    69.9    24904    1182   2.345
Kazan Sunar 308W                   105.0     25.8     1.67    1115    78.5    24091    1134   2.359
SF-033 fl                          105.0     27.0     1.75    1110    78.8    21349    1262   2.419
Hodgdon H335                       105.0     28.8     1.87    1106    68.5    25053    1167   2.363
ADI AR 2210                        105.0     27.3     1.77    1104    68.8    25492    1109   2.356
Alliant Reloder-10x                105.0     24.9     1.61    1094    76.4    20878    1177   2.444
Lovex-D0731                        105.0     28.1     1.82    1067    64.4    24939    1033   2.420
Lovex-D0733                        105.0     28.1     1.82    1066    65.1    24190    1045   2.432
Vihtavuori N130                    105.0     24.7     1.60    1061    75.9    20943    1068   2.494
Hodgdon H322                       105.0     25.6     1.66    1050    67.6    21508    1061   2.501
Alliant Reloder-12                 105.0     26.9     1.74    1050    68.5    21791    1055   2.498
Ramshot TAC                        105.0     28.3     1.83    1048    62.1    22321    1054   2.490
Accurate 2015                      105.0     25.5     1.66    1042    72.0    18935    1095   2.564
Hodgdon Benchmark                  105.0     26.0     1.68    1039    65.9    21780    1005   2.515
Accurate 2230                      105.0     28.3     1.83    1034    63.3    21097    1048   2.542
Somchem S321                       105.0     28.4     1.84    1027    61.1    20648    1051   2.558
Vihtavuori N530                    105.0     26.5     1.72    1027    61.7    21088    1020   2.547
Winchester 748                     105.0     28.4     1.84    1018    58.6    21368    1001   2.560
PB Clermont PCL 507                105.0     27.6     1.79    1017    60.3    20595    1004   2.572
ADI AR 2206                        105.0     26.1     1.69    1008    62.3    21310     936   2.576
Accurate 2460                      105.0     28.3     1.84    1006    61.4    18945    1030   2.633
Norma 201                          105.0     27.0     1.75     997    60.5    18201    1012   2.665
Lovex-S0601                        105.0     25.7     1.66     996    60.9    20567     922   2.610
Bofors RP2 NT ~approximation       105.0     26.2     1.70     991    59.9    20415     921   2.619
Lovex-D0832                        105.0     27.8     1.80     991    61.5    20797     969   2.622
Rottweil R901                      105.0     25.1     1.63     986    64.4    15943    1022   2.743
Somchem S335                       105.0     25.8     1.67     985    66.4    17690     973   2.692
Vihtavuori N133                    105.0     24.2     1.57     985    68.8    18514     932   2.671
Hodgdon H4895                      105.0     26.4     1.71     981    57.3    18307     963   2.682
ADI AR 2206H                       105.0     26.4     1.71     977    56.6    18317     949   2.688
Norma 202                          105.0     26.0     1.68     975    61.5    17591     974   2.712
Hodgdon BL-C2                      105.0     28.8     1.87     970    54.7    18748     961   2.707
SNPE Vectan SP 9                   105.0     27.3     1.77     968    55.3    18782     910   2.695
Somchem S341                       105.0     28.4     1.84     960    54.0    19635     874   2.693
Vihtavuori N540                    105.0     26.7     1.73     955    59.5    16970     945   2.769
Vihtavuori N140                    105.0     25.9     1.68     949    60.6    17270     900   2.768
PB Clermont PCL 516                105.0     28.1     1.82     945    51.0    18751     856   2.748
IMR 3031                           105.0     24.7     1.60     941    58.4    16254     903   2.811
IMR 4895                           105.0     26.4     1.71     935    52.4    16605     892   2.820 

You might look at the load data for the 50 alaskan B&M on Michaels website.

http://www.b-mriflesandcartrid...0BMAK%2010312012.pdf

I had very good accuracy out of my rifle using IMR-3031 and BL-c2