I dunno about starting with 358 Norma data. There's damned little Norma data out there anyway. It seems the WSM case capacity is between Whelen & the Norma. My Norma brass holds 92.4gr of H20 full to the top & some Hornady 300WInMag reformed holds 92.7. I would start with a warm Whelen load & work carefully upwards.
The 250 QL data below shows 70.6 as max for A4350 in the 35 WSM. My (newer) lots of A4350 are almost as slow as S/World 4350. I have been to 80gr with both IMR & S/World 4350. SW was disappointingly slow @2650fps while the late '80s lot of IMR showed a slight ejector mark at 78gr. @2826fps. so at least 10% more powder (possibly more) in the Norma cases than WSM for comparable velocity. It seems a warm Whelen load for your chosen powder would be a safer start & expect to burn some components working upward. I did 2 shots at each full gr, then 1/2 gr. increase over the chronograph while being aware of bolt lift etc.
I dont believe that PP2000MR is in QL yet, but is a winner for speed with accuracy in both my Whelen & my Norma with 225s. H4895 & RL15 did almost as well in both with 225s.
Here's 2 35 Sambar QL I copied from somewhere on the web. Hoping the columns stay in line... but they didn't.
Cartridge : .35/300 WSM (.35 Sambar)
Bullet : .358, 225, Nosler AccuBond 50712
Useable Case Capaci: 68.678 grain H2O = 4.459 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: 63000 psi, or 434 MPa
or a maximum loading ratio or filling of 110 %
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 Fill/Load Ratio Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-17 108.1 71.8 2964 100.0 63000 8774 1.088
Vihtavuori N550 109.6 70.9 2909 99.1 63000 8649 1.109
Winchester 760/H414 107.0 71.6 2908 97.1 63000 8728 1.102
Hodgdon H380 103.6 67.0 2852 98.8 63000 8165 1.123
Accurate 4350 110.0 69.6 2841 98.7 57782 8416 1.156
Accurate 4064 104.9 65.0 2840 100.0 63000 7467 1.147
Accurate 2520 97.2 64.9 2837 100.0 63000 7461 1.131
Norma URP 110.0 68.9 2831 98.5 57158 8396 1.149
Norma 204 110.0 71.9 2828 94.0 60666 8424 1.122
Ramshot Hunter 110.0 71.9 2828 96.8 56877 8591 1.148
Accurate 2495 98.8 61.2 2818 100.0 63000 7165 1.154
Accurate 2460 92.7 63.2 2799 100.0 63000 7270 1.140
Cartridge : .35/300 WSM (.35 Sambar)
Bullet : .358, 250, Nosler PART SP 44801
Useable Case Capaci: 70.787 grain H2O = 4.596 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: 63000 psi, or 434 MPa
or a maximum loading ratio or filling of 110 %
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 Fill/Load Ratio Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-17 104.3 71.4 2838 100.0 63000 8816 1.139
Ramshot Hunter 109.2 73.6 2797 99.0 63000 8978 1.149
Winchester 760/H414 103.2 71.2 2789 98.4 63000 8935 1.154
Norma URP 108.8 70.2 2783 99.8 63000 8651 1.156
Vihtavuori N550 105.7 70.4 2783 99.8 63000 8772 1.162
Accurate 4350 108.2 70.6 2782 99.8 63000 8617 1.169
Norma 204 107.6 72.5 2754 96.5 63000 8804 1.152
Hodgdon H380 100.0 66.7 2730 99.6 63000 8293 1.174
Hodgdon Hybrid 100V 110.0 69.4 2707 100.0 59486 7898 1.183
Accurate 2520 93.5 64.3 2702 100.0 63000 7490 1.187
Accurate 4064 100.7 64.3 2701 100.0 63000 7490 1.203
Alliant Reloder-19 110.0 71.8 2686 95.5 56017 8828 1.208
Accurate 2495 94.8 60.5 2675 100.0 63000 7186 1.211
IMR 4831 110.0 68.7 2665 99.3 55095 8299 1.234
Last edited by 358WCF; 09/02/21.