I recorded 2535 fps outta a 356 ER ( 200 grain FTX) one action took it. The other marlin opened up the Lever.
I was using 39.5 H4198. And a CCI 250.
Dropped it down to 36.7 but I just had a newly purchased ( used) 94 AE pop open.g
Hodgdon called 4 37 to 40.
Maybe it's the magnum primers?
The 220 data and 250 data is where the variance gets bigger IMO.
220 Speer
Speer book H 335 ........39 gr to 43
Hodgdon web.....H335. 43 gr to 46
My load is 42
Last edited by Angus1895; 12/06/20.
