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Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet material and length will alter net case capacity,  pressure and velocity results. Primer selection is specific and primer types are not interchangeable. These data represents maximum loads in our firearms and test equipment and may easily be excessive in other applications. All loads should be reduced by 3%,  and developed following safe handloading practices as represented in established reloading manuals produced by component manufacturers. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.
 

Cartridge: 450 Rigby Magnum

  Firearm: CZ Custom Safari   Max COL: 3.750″ (95.25mm)
  Bullet Diameter: 0.458″   Primer: CCI 250
  Barrel: 24″   Reloading Dies: RCBS Safari
  Max case length: 2.894″ (73.50mm)   Group: Distance 100 yards – Three shots

 Length dimensions converted from CIP metric standards

COL and Capacity   Load Data & Performance
Bullet Type Bullet
Weight
C.O.L.
Inches
Net
Grains
Water
  Powder Charge
Grains
Muzzle
Velocity
FPS
Muzzle
Energy Ft/Lbs
Woodleigh RNSN W30A 350 3.390 122.48   H414 85.0 1940 2866
Woodleigh RNSN W30A 350 3.390 122.48   H414 118.0 2819 6178
North Fork Bonded SS 350 3.640 125.40   Re17 116.0 2852 6323
North Fork Bonded SS 350 3.640 125.40   H414 120.0 2913 6624
North Fork Bonded SS 350 3.640 125.40   IMR 4895 109.0 2804 6112
North Fork Bonded SS 400 3.695 118.61   Re17 108.0 2714 6544
North Fork Bonded SS 400 3.695 118.61   H414 112.0 2703 6491
North Fork Bonded SS 400 3.695 118.61   RS Big Game 107.0 2658 6277
North Fork Bonded SS 400 3.695 118.61   IMR 4895 100.0 2610 6052
Swift A Frame FN 400 3.630 124.64   Re17 111.0 2651 6244
Swift A Frame FN 400 3.630 124.64   Varget 102.5 2647 6225
Swift A Frame FN 400 3.630 124.64   H414 114.0 2729 6616
Swift A Frame FN 400 3.630 124.64   RS Big Game 110.0 2707 6510
North Fork Bonded SS 450 3.660 112.99   Re17 101.0 2592 6715
North Fork Bonded SS 450 3.660 112.99   H414 105.0 2526 6377
North Fork Bonded SS 450 3.660 112.99   RS Big Game 100.0 2537 6433
North Fork Bonded SS 450 3.660 112.99   Win 760 104.0 2581 6658
North Fork CPS 450 3.650 115.48   H4350 106.0 2523 6362
North Fork CPS 450 3.650 115.48   H414 113.0 2618 6850
North Fork CPS 450 3.650 115.48   RS Big Game 108.0 2588 6694
North Fork CPS 450 3.650 115.48   Viht 550 111.0 2591 6710
North Fork FPS 450 3.600 114.10   Re17 108.0 2606 6788
North Fork FPS 450 3.600 114.10   H414 112.0 2614 6829
North Fork FPS 450 3.600 114.10   IMR 4350 110.0 2538 6438
North Fork FPS 450 3.600 114.10   RS Hunter 115.0 2600 6756
North Fork CPS 500 3.650 100.00   Re17 96.0 2438 6601
North Fork CPS 500 3.650 100.00   H414 100.0 2460 6720
North Fork CPS 500 3.650 100.00   IMR 4895 90.0 2422 6514
North Fork CPS 500 3.650 100.00   RS Big Game 95.0 2379 6285
North Fork FPS 500 3.650 100.02   Re17 96.0 2231 5527
North Fork FPS 500 3.650 100.02   H414 100.0 2496 6919
North Fork FPS 500 3.650 100.02   IMR 4895 90.0 2385 6317
North Fork FPS 500 3.650 100.02   RS Big Game 96.0 2403 6413
North Fork Bonded SS 500 3.700 102.72   Re17 98.0 2448 6655
North Fork Bonded SS 500 3.700 102.72   H414 100.0 2403 6413
North Fork Bonded SS 500 3.700 102.72   IMR4350 99.0 2205 5399
North Fork Bonded SS 500 3.700 102.72   RS Big Game 97.0 2399 6391
Hornady DGX 500 3.690 107.02   Re17 101.0 2454 6688
Hornady DGX 500 3.690 107.02   H414 105.0 2431 6563
Hornady DGX 500 3.690 107.02   RS Big Game 100.0 2443 6628
Barnes Banded Solid RN 500 3.715 100.64   Re17 97.0 2350 6133
Barnes Banded Solid RN 500 3.715 100.64   H414 100.5 2329 6024
Barnes Banded Solid RN 500 3.715 100.64   RS Big Game 96.0 2388 6333
Barnes Banded Solid RN 500 3.715 100.64   Win 760 101.0 2452 6677
North Fork Bonded SS 550 3.750 97.53   Re17 92.0 2293 6423
North Fork Bonded SS 550 3.750 97.53   Varget 85.0 2072 5244
North Fork Bonded SS 550 3.750 97.53   H414 95.0 2290 6406
North Fork Bonded SS 550 3.750 97.53   IMR4895 85.0 2248 6173
All Data based on once fired 142 grain capacity Norma Brass