I'm new to chronographs. I fired three different loads of 45/70 through my rifle, some cowboy and hand loads through my rifle and revolver, some Remington and hand loads through my g20, some .380 through my ppk, and some herters 9mm through my p938 and walther ccp . The results were about what I had expected them to be.
Then I fired some american eagle 130gr .38 special through my S+W model 60 and my Ruger Match Champion. The snubie averaged about 760fps for a 10 shot string and the gp100 averaged about 876fps for a 10 shot string, again no surprise.
Here is where I get confused. Next I fired herters .357 158gr fmj through the snubie and averaged 1367fps for a 10 shot string. Heavy recoil. After writing that string down I fired the same ammo out of the same box through the gp100 averaging 1149fps for a 11 shot string. After the first shot (1120fps) I thought that can't be right,it must be an error! But then all the remaining shots were in the 1100's too.
Does anyone have a theory as to what's going on? And No I did not mix up the results. I fired the snubie wrote down the results and then fired the gp100 and wrote those down.
Then I fired some american eagle 130gr .38 special through my S+W model 60 and my Ruger Match Champion. The snubie averaged about 760fps for a 10 shot string and the gp100 averaged about 876fps for a 10 shot string, again no surprise.
Here is where I get confused. Next I fired herters .357 158gr fmj through the snubie and averaged 1367fps for a 10 shot string. Heavy recoil. After writing that string down I fired the same ammo out of the same box through the gp100 averaging 1149fps for a 11 shot string. After the first shot (1120fps) I thought that can't be right,it must be an error! But then all the remaining shots were in the 1100's too.
Does anyone have a theory as to what's going on? And No I did not mix up the results. I fired the snubie wrote down the results and then fired the gp100 and wrote those down.