140 grain combined tech 284 bullets load needed

partsman · Aug 6, 2021

Bought at an auction, some 140 grain combined technology bullets to use in my 7/08, they appear to be coated, as they are gray like maybe moly coated, anyway, does anyone have any data, none of my Nosler books lists them, so would be nice to find a load to try them out.
figure they may not be safe using regular 140 grain data.

Thanks
Bill

TackDriver284 · Aug 6, 2021

I would use the same data as the 140 Ballistic Tips and Partitions. Start low and work up.

JD338 · Aug 6, 2021

You can use 140 gr BT load data. As already mentioned, start low and work up.

JD338

DrMike · Aug 6, 2021

Perhaps this will aid you in making a start.

Code:

Cartridge          : 7 mm-08 Rem.
Bullet             : .284, 140, Nosler CT BalSilTip 51105
Useable Case Capaci: 47.378 grain H2O = 3.076 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 59400 psi, or 409 MPa
or a maximum loading ratio or filling of 112 %
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 !

2 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
---------------------------------  -----------------------------------------------------------------
ReloadSwiss RS 60 *T               104.7     48.0     3.11    2953   100.0    59400   10381   1.046  ! Near Maximum !
Elcho 17                           103.9     47.6     3.08    2935    99.9    59400   10309   1.051  ! Near Maximum !
Alliant Reloder-17 *T              103.9     47.6     3.08    2935    99.9    59400   10309   1.051  ! Near Maximum !
Somchem S365                       111.9     48.6     3.15    2923   100.0    59400    9865   1.057  ! Near Maximum !
ReloadSwiss RS 70 *C               107.3     49.9     3.23    2921    98.2    59400   10645   1.050  ! Near Maximum !
Bofors RL16 TZ *C *T               108.9     46.3     3.00    2911    99.1    59400   10198   1.051  ! Near Maximum !
Alliant Reloder-16 *C *T           108.9     46.3     3.00    2911    99.1    59400   10198   1.051  ! Near Maximum !
ReloadSwiss RS 62                  108.1     49.5     3.20    2908    98.7    59400   10286   1.064  ! Near Maximum !
Alliant Reloder-26 *C              112.0     52.6     3.41    2890    97.5    53317   11271   1.099  ! Near Maximum !
PB Clermont PCL 511                105.3     49.0     3.17    2887    97.3    59400   10267   1.060  ! Near Maximum !
PB Clermont PCL 518                109.6     49.4     3.20    2885    96.9    59400   10293   1.060  ! Near Maximum !
Ramshot Hunter                     108.8     49.0     3.18    2885    97.3    59400   10250   1.061  ! Near Maximum !
Norma URP *C                       108.5     46.9     3.04    2879    98.8    59400    9988   1.066  ! Near Maximum !
Bofors RP19 ~approximation         108.5     46.9     3.04    2879    98.8    59400    9985   1.066  ! Near Maximum !
Accurate 4350                      108.0     47.2     3.06    2878    98.8    59400    9994   1.079  ! Near Maximum !
Winchester 760                     102.8     47.5     3.08    2878    96.5    59400   10191   1.064  ! Near Maximum !
Hodgdon H414                       102.8     47.5     3.08    2878    96.5    59400   10191   1.064  ! Near Maximum !
Vihtavuori N550 *C                 105.2     47.0     3.04    2876    98.7    59400   10093   1.072  ! Near Maximum !
Hodgdon LVR                        105.5     46.1     2.99    2868    98.3    59400    9895   1.064  ! Near Maximum !
Hodgdon Hybrid 100V                111.4     47.1     3.05    2850    99.8    59400    9295   1.063  ! Near Maximum !
ADI AR 2209                        111.9     48.6     3.15    2849    93.8    59400   10103   1.057  ! Near Maximum !
Norma MRP *C                       112.0     51.0     3.31    2838    94.3    52852   10866   1.108  ! Near Maximum !
Bofors RP3                         100.4     44.3     2.87    2836    99.9    59400    9373   1.089  ! Near Maximum !
Norma 203 old                      100.4     44.3     2.87    2836    99.9    59400    9373   1.089  ! Near Maximum !
Bofors RP4 ~approximation          110.5     48.3     3.13    2836    93.9    59400    9925   1.062  ! Near Maximum !
Norma 204 *C                       107.0     48.3     3.13    2836    93.9    59400    9925   1.062  ! Near Maximum !
Raufoss RA4                        110.5     48.3     3.13    2836    93.9    59400    9925   1.062  ! Near Maximum !
Alliant Reloder-19 *C              112.0     48.9     3.17    2831    93.8    57290   10142   1.077  ! Near Maximum !
Rottweil R903                      102.7     44.4     2.87    2829    99.8    59400    9290   1.089  ! Near Maximum !
Bofors RP4 NT *C ~approximation    108.2     48.0     3.11    2829    96.0    59400    9750   1.072  ! Near Maximum !
Hodgdon H380                        99.5     44.4     2.88    2823    98.4    59400    9541   1.083  ! Near Maximum !
Somchem S355                       102.4     43.8     2.84    2820    99.7    59400    9266   1.086  ! Near Maximum !
Shooters World SW4350              107.2     46.3     3.00    2815    96.6    59400    9632   1.085  ! Near Maximum !
Lovex S070                         107.2     46.3     3.00    2815    96.6    59400    9632   1.085  ! Near Maximum !
IMR 4831                           112.0     46.8     3.04    2813    98.5    55952    9683   1.103  ! Near Maximum !
Accurate 4064                      100.3     42.9     2.78    2811   100.0    59400    8784   1.111  ! Near Maximum !
Lovex D073.6                        95.2     42.8     2.78    2810   100.0    59400    8783   1.093  ! Near Maximum !
Shooters World Match Rifle          95.2     42.8     2.78    2810   100.0    59400    8783   1.093  ! Near Maximum !
Accurate 2520                       93.0     42.8     2.78    2810   100.0    59400    8783   1.093  ! Near Maximum !
Winchester Supreme 780             110.9     51.1     3.31    2805    93.7    59400    9625   1.064  ! Near Maximum !
Bofors RP14 ~approximation         112.0     48.9     3.17    2803    93.3    55958    9986   1.090  ! Near Maximum !
Rottweil R904                      111.1     47.8     3.10    2798    92.6    59400    9555   1.068  ! Near Maximum !
IMR 7828 SSC                       112.0     50.2     3.26    2797    90.2    54843   10293   1.093  ! Near Maximum !
Shooters World Long Rifle          105.7     45.2     2.93    2796    97.7    59400    9350   1.087  ! Near Maximum !
Lovex S065                         105.7     45.2     2.93    2796    97.7    59400    9350   1.087  ! Near Maximum !
SNPE Vectan SP 7                    93.8     43.9     2.85    2793    98.3    59400    9186   1.087  ! Near Maximum !
Accurate 2495                       94.4     40.3     2.61    2790   100.0    59400    8427   1.117  ! Near Maximum !
Somchem S385                       112.0     49.4     3.20    2790    94.8    55879    9777   1.104  ! Near Maximum !
Bofors RP7                         104.1     44.6     2.89    2782    95.6    59400    9341   1.085  ! Near Maximum !
Rottweil R907                      104.1     44.6     2.89    2782    95.6    59400    9341   1.085  ! Near Maximum !
IMR 4007 SSC                       100.8     44.7     2.89    2782    95.6    59400    9334   1.085  ! Near Maximum !

partsman · Aug 6, 2021

Thanks all, just was not sure as some say these bullets are different than the old cup and core and can create higher pressure if not careful.

So thanks for the advice, will just do the usual and work up and see how they do.