I was basing this loading off the Hogdons website using the loading data for H4227 as they didn't have any listed for IMR 4227.  People go back and forth as to whether they are the same powder or not.  I figured I would work up and see how it went.  Velocity readings were fine so I feel I was safe.  I will definitly revisit this powder in 41 Mag as the recoil was light and muzzle blast was light.  I do want to see if the IMR 4227 can get up to the 1400 fps area and see what the recoil and muzzle blast is like up there.  I have read that 4227 is excellent for the 445 Super Mag and am excited to work up loads for that caliber after I finish goofing with 41 Mag.  

Set: 158
Created: 06/26/16 12:44 PM
Description: 41 Mag Ruger RedHawk 7 1/2" Starline brass
Notes 1: IMR 4227 21.5 gr.
Notes 2: Hornady 210 XTP JHP Fed LP 150
Distance to Chrono(FT): 10.00
Ballistic Coefficient: 0.182
Bullet Weight(gr): 210.00
Temp: 80 °F
BP: 29.45 inHg
Altitude: 506.00
#          FPS  FT-LBS      PF
5    1350    849.97  283.50
4    1284    768.89  269.64
3    1319    811.38  276.99
2    1275    758.15  267.75
1    1289    774.89  270.69
Average: 1303.4 FPS
SD: 30.8 FPS
Min: 1275 FPS
Max: 1350 FPS
Spread: 75 FPS
Shot/sec: 0.2
True MV: 1310 FPS
Group Size (in): 0.00

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Set: 157
Created: 06/26/16 12:42 PM
Description: 41 Mag Ruger RedHawk 7 1/2" Starline brass
Notes 1: IMR 4227 21 gr
Notes 2: Hornady 210 XTP JHP Fed LP 150
Distance to Chrono(FT): 10.00
Ballistic Coefficient: 0.182
Bullet Weight(gr): 210.00
Temp: 80 °F
BP: 29.45 inHg
Altitude: 506.00
#          FPS  FT-LBS      PF
5    1292    778.50  271.32
4    1281    765.30  269.01
3    1307    796.68  274.47
2    1287    772.49  270.27
1    1251    729.88  262.71
Average: 1283.6 FPS
SD: 20.6 FPS
Min: 1251 FPS
Max: 1307 FPS
Spread: 56 FPS
Shot/sec: 0.2
True MV: 1290 FPS
Group Size (in): 0.00

--------------------------------------------
Set: 156
Created: 06/26/16 12:41 PM
Description: 41 Mag Ruger RedHawk 7 1/2" Starline brass
Notes 1: IMR 4227 20 gr
Notes 2: Hornady 210 XTP JHP Fed LP 150
Distance to Chrono(FT): 10.00
Ballistic Coefficient: 0.182
Bullet Weight(gr): 210.00
Temp: 80 °F
BP: 29.45 inHg
Altitude: 506.00
#          FPS  FT-LBS      PF
5    1237    713.63  259.77
4    1244    721.73  261.24
3    1260    740.42  264.60
2    1248    726.38  262.08
1    1170    638.42  245.70
Average: 1231.8 FPS
SD: 35.5 FPS
Min: 1170 FPS
Max: 1260 FPS
Spread: 90 FPS
Shot/sec: 0.2
True MV: 1238 FPS
Group Size (in): 0.00

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