Thread: 8208, 168 eldm 16.5” barrel 8 twist questions re max charge etc

Greetings @Nga,
That is now three sources all on the same page. The outlier is GRT so can be discounted. Comparing the velocity data from Hodgdon for 43.3 grains of 8208 in 24" and 15" barrels give a velocity loss of 20 fps velocity loss per inch. My son chronographed 43 grains of 8208 in an 18 inch barrel with the 165 grain BT at 2,700 fps so your results are in line with this.
Regards GPM.