I have some 5.56 reloads that are shooting faster than they did 2 yrs. ago. Here are the load details:
Brass: LC15
Bullet Hornady 75 gr. BTHP
Powder: 23.5 gr. of 8208 XBR
Average velocity (22" barrel) is 2894 fps & ES (5 shots) is 9 fps
This is about 100 fps faster than the velocity that I had 2 years ago.
I did wet tumble the brass w/ SS pins. I have been reading that this may cause bullets to stick - could this be the cause? When I recently checked the velocity it was 70F outside. Don't remember what it was 2 years ago but guessing that it was colder - probably 40F or so. Is 8208 temperature sensitive?
Anyway, happy w/ extreme spread just confused why the velocity went up and with that velocity not getting close to transonic at 1000 yards.
Brass: LC15
Bullet Hornady 75 gr. BTHP
Powder: 23.5 gr. of 8208 XBR
Average velocity (22" barrel) is 2894 fps & ES (5 shots) is 9 fps
This is about 100 fps faster than the velocity that I had 2 years ago.
I did wet tumble the brass w/ SS pins. I have been reading that this may cause bullets to stick - could this be the cause? When I recently checked the velocity it was 70F outside. Don't remember what it was 2 years ago but guessing that it was colder - probably 40F or so. Is 8208 temperature sensitive?
Anyway, happy w/ extreme spread just confused why the velocity went up and with that velocity not getting close to transonic at 1000 yards.