Any 375 cheytac?

Shot my new loads today but the bad thing my magnetospeed died so i got very little FPS data. I did get 1 reading 122.5 was 2968 FPS. I was able to shoot up to 123.5 with no primer cratering and primmer was not flatted out. I am planning on loading up to 125 grains. Its hot here so i am not going to get to aggressive.
 
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Shot my new loads today but the bad thing my magnetospeed died so i got very little FPS data. I did get 1 reading 122.5 was 2968 FPS. I was able to shoot up to 123.5 with no primer cratering and primmer was not flatted out. I am planning on loading up to 125 grains. Its hot here so i am not going to get to aggressive.
And those are the 377gr or the 400gr? And with n570? What length is your barrel again?