As I promised that I would report back on my tests/measurements. Below is what I got
(now the world knows that I am a bad shooter but I did have a good time
)
OAL=2.214”, 47F, no wind, 26” Remington 700 SPS, 26” barrel, 1/12 twist rate, 100yd, table-top
H335 powder, 55gr Everglades FMJ projectiles.
22gr/2901fps (2904,2907,2918,2916,2860), 1 3/8” grouping
23gr/2992fps (2929, 2940,2962,3052,3080), 2 7/8” grouping
24gr/3170fps (3183, 3140,3077,3103,3207,3310), 2 ½” grouping (actually 9 shots with 3 lost chrono readings)
25gr/3440fps (3455,3419,3428,3441,3459), grouping 1”
I may explore more around 25gr but not sure if 3440fps is at the high end of 223 rem velocity for a 1/12" twist rate barrel?