Guys,I have some H450 here and I am loading for my 300 winmag.The burn rate for H450 is very close to RL22.RL22 is a great powder for the 300 win so I am looking for data for H450 and the 165gr & 180gr bullets.{I have 150gr data here}.Any data from an older Hogdon manual would be appreciated.If primers used are mentioned that would be great.
Thanks in advance Ruttinbuck

From Hodgdon # 26;

165 gr bullets, H450 powder, 71 to 76 gr.

180 gr bullets, H450 podwer, 69 to 75 gr.

190 - 70 to 73

200 - 66 to 72

That's the heaviest bullet they list H450 for. Hope this helps. - dan

thank you Dan,you are a scolar and a gentleman.