Ben Shepherd
Member
WARNING: THE FOLLOWING DATA IS ABOVE PUBLISHED MAXIMUMS!!!! Use only in srong guns, and work up slowly.
I've got a combo for my 7.5" 41 redhawk that's got me scratcing my head.
10 shot strings, 65 degrees, overcast.
DATA:
Load 1:
Winchester brass, federal 150 primers, 210XTP, 20.0 grains Vit. N110.
Ave: 1501, ES: 58.32, SD: 24.39
Load 2:
Same as one EXCEPT powder increased to 20.5 grains.
Ave: 1559, ES: 155.9, SD: 58.73.
Load 3:
Powder increased to 21.0 grains
Ave: 1540, ES: 35.48, SD: 11.91.
All load components came from the same containers, all brass was trimmed identically. I observed no phisical high pressure signs in any of the above loads. The velocity increase from load 1 to load 2 was linear with the loads started 2 grains lower. My concern is with the load 2 running erratic(something not happy here), then load 3 actually slows down slightly,which is a pressure sign, BUT: still NO other pressure signs, period. And load 3 will do 1" at 25 yards all day, and is so consistant that I don't want to toss it out.
My prevoius experience with n110 in 357 and 44 magnums was that when you "hit the wall" you hit the wall no question. Yet in this load it seems to have found a happy spot slightly past the normal limit.
What do you think? Am I OK or running dangerous? If you want more details let me know.
Thoughts, input greatly appreciated.
WARNING: The above data is above current published maximums, use at your own risk!!!! For large frame guns only.
I've got a combo for my 7.5" 41 redhawk that's got me scratcing my head.
10 shot strings, 65 degrees, overcast.
DATA:
Load 1:
Winchester brass, federal 150 primers, 210XTP, 20.0 grains Vit. N110.
Ave: 1501, ES: 58.32, SD: 24.39
Load 2:
Same as one EXCEPT powder increased to 20.5 grains.
Ave: 1559, ES: 155.9, SD: 58.73.
Load 3:
Powder increased to 21.0 grains
Ave: 1540, ES: 35.48, SD: 11.91.
All load components came from the same containers, all brass was trimmed identically. I observed no phisical high pressure signs in any of the above loads. The velocity increase from load 1 to load 2 was linear with the loads started 2 grains lower. My concern is with the load 2 running erratic(something not happy here), then load 3 actually slows down slightly,which is a pressure sign, BUT: still NO other pressure signs, period. And load 3 will do 1" at 25 yards all day, and is so consistant that I don't want to toss it out.
My prevoius experience with n110 in 357 and 44 magnums was that when you "hit the wall" you hit the wall no question. Yet in this load it seems to have found a happy spot slightly past the normal limit.
What do you think? Am I OK or running dangerous? If you want more details let me know.
Thoughts, input greatly appreciated.
WARNING: The above data is above current published maximums, use at your own risk!!!! For large frame guns only.
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