First the back story -
From the Ramshot Load Data Sheet - http://www.ramshot.c...ndgun_rifle.pdf - they list an upper load of 23.5 g of X-Term for the 55 g VMax. The rifle in their data is a 24 in barrel with a 1-12 Twist.
Yesterday's results (only giving the upper end load that I loaded):
- From a 18 in JP Rifle
- OAL - 2.25
- Once fired Federal Brass
- Federal Primers
- Hornady VMax - 55 g
- Powder - X-term at 23.3 g
- Avg Muzzle Velocity was only - 2817
I was a little disappointed in this result, since I'm hoping to get a good load that will give me a higher muzzle velocity. Currently using W748 with good results, but concerned about the reported temperature sensitivity of this powder. Have not experienced this myself though.
Checking out the Sierra Load Data- http://accurateshoot...sierra223ar.pdf - Colt AR15, 20 in Barrel, 1-7 Twist. They list an upper limit of 25.1 g of X-Terminator for all 55 grain bullets.
My questions are:
- Is it safe to assume that I can use the Load Data from Sierra for a 55 g VMax?
- Is it usually safe to use the data for bullets of the same weight interchangeably?
Thanks for any help,