03-08-2020, 01:01 AM
Arrrrrrrgh! I flunked the test! You spotted my transcription error, the correct reading was 2681 at 27.6 grains.
I believe the 2818 reading from the 27.0 grains to be correct, a results of the case neck being too thick thus gripping the bullet much harder on chambering and spiking the velocity.
This condition happened somewhat randomly through out the test and I suspected it would throw a monkey wrench into the results.
I used the Speer's reloading data from their site for a max charge of 29.2, max velocity of 2992 from a 24" bbl.
Klem, many thanks for your help. I appreciate the time and effort you put in.
The good thing about flunking the test is that I get a do over!
I believe the 2818 reading from the 27.0 grains to be correct, a results of the case neck being too thick thus gripping the bullet much harder on chambering and spiking the velocity.
This condition happened somewhat randomly through out the test and I suspected it would throw a monkey wrench into the results.
I used the Speer's reloading data from their site for a max charge of 29.2, max velocity of 2992 from a 24" bbl.
Klem, many thanks for your help. I appreciate the time and effort you put in.
The good thing about flunking the test is that I get a do over!