new toy ...

A Magnum Research Inc Lone Eagle single shot pistol. Model # SSP 91, in 7-08 caliber. Overall length is 15". The chamber is accessed by twisting a large nurelled knob on the rear of the pistol. No sights, except for a scope placed on it by the last owner.

I have some 7mm bullets, 140 gr., and F210 Match primers. Any ideas about starting powder charges and which one?


Old Jim

Congratulations on a fine acquisition, Jim. Here are a few ideas to consider:

Cartridge : 7 mm-08 Rem.
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 47.351 grain H2O = 3.074 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 15.0 inch = 381.0 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 59000 psi, or 406 MPa
or a maximum loading ratio or filling of 100 %
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
--------------------------------- -----------------------------------------------------------------
Norma 203 old 100.0 44.1 2.86 2571 98.3 58564 14754 0.881 ! Near Maximum !
Accurate 2520 95.0 42.7 2.77 2562 99.6 59000 14126 0.880 ! Near Maximum !
Lovex D073.6 95.0 42.7 2.77 2562 99.6 59000 14126 0.880 ! Near Maximum !
Hodgdon H380 99.3 44.3 2.87 2561 95.5 59000 14733 0.870 ! Near Maximum !
Accurate 2495 97.5 40.2 2.61 2550 100.0 59000 13614 0.902 ! Near Maximum !
SNPE Vectan SP 7 93.6 43.8 2.84 2537 95.4 59000 14237 0.872 ! Near Maximum !
Hodgdon H414 100.0 46.2 2.99 2527 91.1 53985 15100 0.892 ! Near Maximum !
Winchester 760 100.0 46.2 2.99 2527 91.1 53985 15100 0.892 ! Near Maximum !
Rottweil R901 93.7 38.9 2.52 2521 99.8 59000 13437 0.888 ! Near Maximum !
IMR 4007 SSC 100.0 44.3 2.87 2505 91.5 57754 14108 0.877 ! Near Maximum !
Rottweil R903 100.0 43.2 2.80 2504 97.3 54404 14337 0.912 ! Near Maximum !
Somchem S355 100.0 42.7 2.77 2504 97.3 55006 14231 0.903 ! Near Maximum !
Vihtavuori N550 100.0 44.6 2.89 2462 93.3 50078 14701 0.934
Accurate 4064 100.0 40.8 2.64 2445 99.4 51010 13772 0.964
Rottweil R907 100.0 42.8 2.78 2417 89.8 52136 13564 0.922 ! Near Maximum !

Any pictures of it Jim?