Here are 17 loads from Loaddata.com
Don't know if it helps or not.
8X56R
Warning! Strong>Notes: Cartridge oal with military bullets is 3.04 inches; cartridge oal with Patriot bullets is 2.85 inches. (Rifle Issue #139 - January, 1992)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
206 German Military FMJ/BT IMR IMR-3031 45.0 2,258
Remarks: Berdan Primer; Rottweil Case .9x2.2 inch groups
206 German Military FMJ/BT IMR IMR-3031 45.0 2,278
Remarks: WLR Primer; Bertram Case .7x2.9 group size
206 German Military FMJ/BT IMR IMR-3031 47.0 2,316
Remarks: Berdan Primer; Rottweil Case .9x1.7 inch group size
206 German Military FMJ/BT IMR IMR-3031 47.0 2,358
Remarks: CCI Large Rifle Primer; Bertram Case 1.0x4.0 inch group size
206 German Military FMJ/BT IMR IMR-4895 45.0 2,202
Remarks: Berdan Primer; Rottweil Case 1.4x2.2 inch groups
206 German Military FMJ/BT IMR IMR-4320 48.0 2,373
Remarks: Berdan Primer; Rottweil Case 1.3x3.0 inch group size
206 German Military FMJ/BT IMR IMR-4350 53.0 2,272
Remarks: Berdan Primer; Rottweil Case 1.5x3.5 inch groups
206 German Military FMJ/BT Hodgdon H-4831 55.0 2,158
Remarks: Berdan Primer; Rottweil Case 1.1x2.2 inch groups
206 German Military FMJ/BT Winchester W-760 52.0 2,358
Remarks: Berdan Primer; Rottweil Case .9x2.6 inch groups
200 Patriot SP/RN IMR IMR-3031 47.5 2,319
Remarks: Berdan Primer; Rottweil Case .7x1.8 inch groups
200 Patriot SP/RN Hodgdon H-4831 56.5 2,252
Remarks: CCI Large Rifle Primer; Bertram Case .7x.7 inch groups
200 Patriot SP/RN Hodgdon H-4831 57.0 2,222
Remarks: Berdan Primer; Rottweil Case .4x.7 inch groups
250 Patriot SP/RN IMR IMR-3031 45.0 2,087
Remarks: Berdan Primer; Rottweil Case .9x4.8 inch groups
250 Patriot SP/RN Hodgdon H-4831 55.0 2,085
Remarks: Berdan Primer; Rottweil Case 1.1x4.5 inch groups
250 Patriot SP/RN Hodgdon H-4831 55.0 2,143
Remarks: CCI Large Rifle Primer; Bertram Case 1.5x3.5 inch groups
(c) 2004 Loaddata.com
8x56Rmm Austrian/Hungarian Mannlicher / 8mm Hungarian M31
Warning! Notes: General Comments - This cartridge is often confused with the 8x56mm Mannlicher-Schoenauer, which is a rimless sporting cartridge, whereas the Hungarian military round is rimmed. The two are not interchangeable, as there is considerable difference in case dimensions as well as bullet diameter. Rifles in this chambering are common on the American market and ammunition is also readily available. The 0.329-inch diameter bullet makes handloading a problem because bullets of this size are not normally available. It is possible to use 0.323-inch bullets, but accuracy is poor. Military rifles in this chambering should be considered primarily collector's items because of the ammunition supply problem. In power, the 8x56Rmm Hungarian and the 8x50Rmm Austrian cartridge are in the 30-40 Krag class. (Cartridges of the World 11th Edition)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
198 SP IMR IMR-3031 46.0 2310
Remarks: energy: 2358; 0.323-inch bullet
206 Ball IMR IMR-3031 45.0 2300
Remarks: energy: 2420; military load
(c) 2004 Loaddata.com