Magnetospeed v2

tac20

Well-Known Member
Just been doing some load development in my 17 fireball so when using 20 gr bullets over magnetospeed all well giving 3750fps readings then when I changed using same powder and weight only using 17 gr bullets the readings went all lower round about 2000 fps any ideas ?
 

jcampbellsmith

Well-Known Member
Just been doing some load development in my 17 fireball so when using 20 gr bullets over magnetospeed all well giving 3750fps readings then when I changed using same powder and weight only using 17 gr bullets the readings went all lower round about 2000 fps any ideas ?
What i did recently was lend a friend a Magnetospeed and he changed one component at a time to determine whether it was the sensor, cable or electronics.
Regards
JCS
 

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