Good Timing!!! I ran Retumbo over a chrony just this morning.
73.0 gr Retumbo gave me 3100 fps in a 7mm Rem Mag with the 160 Accubond. That same bullet with 70.0 RL25 clocked a 9 shot average of 3041.
68.0 gave me 3250 out of my 26" .264 Win Mag with 130 Accubonds while 68.0 Magnum gave me 3078 with the 140 Accubond.
Hmmmm....interesting....I may have to try some Retumbo.Looks good!
Butch Searcy told me many years back that in general the double base powders (R22 and 25,etc) have a "
higher " flame temp than the single base powders(7828,Retumbo?),and will give somewhat longer barrel life....by how much I dunno.
Edited: I screwed up above;it's the double base stuff that has the higher temp;Sorry!
