Hi
Would like to get a reasonable estimate of the approx muzzle velocity drop I would expect on my 22" barreled rifles from the 24" test barrel data I see, and therefore understand when I am probably approaching max pressure. (across my chronograph)
I have 2 rifles, both with 22" barrels, that I reload the most: (both bolt guns)
- 30-06 165gr or 168gr spitzer using a powder like IMR or H4350 (ruger 77 mkII)
- 6.5x55 swede 140gr spitzer using a powder like IMR or H4350 (Howa 1500)
I have looked online and see wildly different data on this, so wanted to find out what you folks actually have experienced.
What does your experience tell you on this, and I understand it would be a rough estimate, and it is my responsibility to be checking all the other signs of pressure and not just be relying on the chronograph!
Thanks much for any thoughts on this.
