IMR RIFLE DATA

NEVER Exceed the Loads Listed Here

243 Winchester
Cartridge Information
Case:
Winchester
Barrel Length:
24"  
Twist:
1:10"
Trim Length:
2.035"  
Primer:
Winchester LR
        
243 Winchester Cartridge Load Data
Starting Loads
Maximum Loads
Bullet Weight (Gr.)PowderBullet Dia.C.O.L.Grs.Vel. (ft/s)PressureGrs.Vel. (ft/s)Pressure
55 GR. NOS BTIMR 4320.243"2.650"40.0360348,600 CUP45.5387649,800 CUP
55 GR. NOS BTIMR 4064.243"2.650"

39.5

355441,300 CUP44.0387551,200 CUP
55 GR. NOS BTIMR 4895.243"2.650"40.0359942,100 CUP44.0387750,200 CUP
55 GR. NOS BTIMR 3031.243"2.650"37.0352038,300 CUP40.5386450,900 CUP

58 GR. HDY V-MAXIMR 4320.243"2.600"40.5344841,800 CUP44.8382250,100 CUP
58 GR. HDY V-MAXIMR 4064.243"2.600"39.6338839,400 CUP44.03780 50,200 CUP
58 GR. HDY V-MAXIMR 4895.243"2.600"40.5355142,300 CUP44.73819 50,000 CUP
58 GR. HDY V-MAXIMR 3031.243"2.600"36.5346740,700 CUP41.03815 50,500 CUP

60 GR. SIE HPIMR 4320.243"2.600"40.0343142,500 CUP44.4371650,500 CUP
60 GR. SIE HPIMR 4064.243"2.600"40.0347643,600 CUP43.8376650,400 CUP
60 GR. SIE HPIMR 4895.243"2.600"39.6346443,500 CUP43.3378550,800 CUP
60 GR. SIE HPIMR 3031.243"2.600"36.8344843,000 CUP40.5371450,500 CUP

65 GR. HDY V-MAXIMR 4320.243"2.600"40.5344843,800 CUP43.9367049,500 CUP
65 GR. HDY V-MAXIMR 4064.243"2.600"40.0341543,000 CUP43.4369850,000 CUP
65 GR. HDY V-MAXIMR 4895.243"2.600"38.5339242,300 CUP42.7366450,600 CUP
65 GR. HDY V-MAXIMR 3031.243"2.600"36.5339743,800 CUP39.8362450,200 CUP

70 GR. SPR HPIMR 4320.243"2.625"38.5332543,800 CUP42.5354150,300 CUP
70 GR. SPR HPIMR 4064.243"2.625"38.5331643,700 CUP42.5354150,000 CUP
70 GR. SPR HPIMR 4895.243"2.625"38.5334944,300 CUP42.6355850,000 CUP
70 GR. SPR HPIMR 3031.243"2.625"35.5321841,500 CUP39.0348551,100 CUP

75 GR. HDY HPIMR 4320.243"2.640"37.7318043,500 CUP41.5342050,600 CUP
75 GR. HDY HPIMR 4064.243"2.640"37.5318343,300 CUP41.2341950,300 CUP
75 GR. HDY HPIMR 4895.243"2.640"37.5319844,200 CUP41.7342350,400 CUP
75 GR. HDY HPIMR 3031.243"2.640"33.2306141,800 CUP36.7329849,800 CUP

80 GR. SIE BTSPIMR 4320.243"2.635"37.0313244,000 CUP40.5333950,600 CUP
80 GR. SIE BTSPIMR 4064.243"2.635"37.5314145,000 CUP41.0332050,800 CUP
80 GR. SIE BTSPIMR 4895.243"2.635"36.5309443,300 CUP40.2329050,300 CUP

85 GR. BAR XBTCIMR 4831.243"2.560"44.2288640,700 CUP48.5C318349,200 CUP
85 GR. BAR XBTCIMR 4350.243"2.560"43.0295942,000 CUP47.0C322950,100 CUP
85 GR. BAR XBTCIMR 4320.243"2.560"36.5301145,200 CUP39.9315949,500 CUP
85 GR. BAR XBTCIMR 4064.243"2.560"36.5297443,500 CUP40.0316850,400 CUP
85 GR. BAR XBTCIMR 4895.243"2.560"36.5294943,000 CUP40.6318250,000 CUP

90 GR. SPR SPIMR 7828.243"2.625"45.0295046,100 CUP48.0C*313050,600 CUP
90 GR. SPR SPIMR 4831.243"2.625"40.5285843,700 CUP43.9305050,700 CUP
90 GR. SPR SPIMR 4350.243"2.625"39.5285642,700 CUP43.0309650,800 CUP
90 GR. SPR SPIMR 4064.243"2.625"33.5279641,600 CUP37.0302050,200 CUP
90 GR. SPR SPIMR 4895.243"2.625"33.5281541,800 CUP36.9303350,200 CUP

95 GR. NOS PARTIMR 7828.243"2.650"41.5278042,300 CUP45.8C*303050,600 CUP
95 GR. NOS PARTIMR 4831.243"2.650"39.5279343,900 CUP42.8298550,200 CUP
95 GR. NOS PARTIMR 4350.243"2.650"38.0279243,200 CUP41.8299350,200 CUP
95 GR. NOS PARTIMR 4064.243"2.650"33.0274543,500 CUP36.5296751,100 CUP
95 GR. NOS PARTIMR 4895.243"2.650"32.0268741,800 CUP35.5290850,400 CUP

100 GR. SPR BTSPIMR 7828.243"2.650"42.5279643,700 CUP46.0C*300951,100 CUP
100 GR. SPR BTSPIMR 4831.243"2.650"39.2273343,500 CUP43.0294750,800 CUP
100 GR. SPR BTSPIMR 4350.243"2.650"38.5276043,000 CUP42.0295850,100 CUP
100 GR. SPR BTSPIMR 4064.243"2.650"33.0267242,200 CUP36.5290251,100 CUP
100 GR. SPR BTSPIMR 4895.243"2.650"32.8268342,300 CUP35.7286250,100 CUP

105 GR. HDY A-MAXIMR 7828.243"2.760"40.6272144,500 CUP44.0C289450,300 CUP
105 GR. HDY A-MAXIMR 4831.243"2.760"38.0266143,700 CUP41.5287050,800 CUP
105 GR. HDY A-MAXIMR 4350.243"2.760"36.7264843,000 CUP40.2287050,800 CUP

107 GR. SIE BTHPIMR 7828.243"2.850"40.0267543,000 CUP43.5287850,100 CUP
107 GR. SIE BTHPIMR 4831.243"2.850"37.5266243,900 CUP40.9284450,400 CUP
107 GR. SIE BTHPIMR 4350.243"2.850"36.5266142,100 CUP39.8285350,600 CUP

C = Compressed Charge

* Max loads that show an asterisk following the "C" for compressed load will not fit with standard IMR7828. Reduce by 4%.