lazyengineer Wrote:American Eagle is smoking drugs on that velocity claim. Don't use that velocity as a benchmark for anything. No reloading manual anywhere reports that, even in 24" test barrels. There is some serious rounding up going on there.
Data points
16 BA Fluted Barrel
LabRadar
84f/Sea level
Speer 90 TNT/ 31.7 grns 8202XBR/Hornady brass/ CCI 450/ 2.250 COL/ 2728 fps
Federal American Eagle 90 TNT w/cannelure and crimp, 5 shots/ 2786/22 Es/ 8.3 sd. The brass looked fine, for the most part. 2 pieces had just the faintest hint of the ejector just starting to leave a little shiny spot.
Interpolating 8 more inches at 25 fps per, is getting pretty close to 3000 fps at 24.