That’s a typo should be 240 grain. Those keys do both letters and numbers and I didn’t proof read.
Again I do not remember which brands did the 1180 and which brands that did 1240. No load that I chronographed in my M29 went below 1180 and none went above 1280. As I remember it was one or the other speed. It was 2008 when I did this
Just buy some recent manufactured 44 mag of manufacturers that are SAAMI members and chronograph them yourself, you should get similar numbers that I got.
I’ve still got a few of the 70s Remington 240 JHP loads that I can chronograph again if needed
