With 40-41.5grs on the VV550?40-41.5 grs of H4350 or Vit. N550 with CCI 450 Primers. Could try N540 at about 38grs.
H4350 as proved to be extremely accurate in every 6.5x47 I have loaded for. N550 has been the best performer but not always the most accurate. Have gotten 2900 with N550 out of a 24" barrel.
Thanks Mr Griffith!!!!! Did you have any temp deviations on the RL17?
I still say thank you Sir!!!!!!!Yes and no.
Yes, I've seen a backwards or upside down deviation where it actually slowed during summer months and sped up in winter months.
No, I did not actually get what i consider accurate data as I consider the best way is to get the same data from loads that were all reloaded the same day. Meaning I should load up about 20 rounds on the same day. Shoot 10 in hot weather and store the other 10 until winter and then shoot them.
I discussed this with a buddy of mine who is a ballistic lab tech who works for ADI, they make most of our Hodgdon powder down in Mulwala, Australia; ADI or Australian Defense Indsustries. He's done testing with Rel 17 and has seen the same thing.
Sorry this only helps somewhat.