I'm considering shooting my trapdoor carbine (original w/lined barrel) in a "classic battle rifle" match for any military rifle made before 1947. Most will be using milsurp rifles and likely many Garands, 1903 Springfields, and M-1 Carbines. I'd like to mix it up with my TD carbine that I use in the Plainsman side matches at Cowboy Action shoots. I have the rifle sighted in to hit 2" high at 50 yards which is perfect for the typical Plainsman match where there is rarely a target over 75 yards and more commonly under 50 yards. In the Practical Rifle classic battle rifle match I am supposing there will be targets out to maybe 300 yards maximum with most between 50-200yds. I'd like to know what the holdover would be at 100-200 yards. I'm shooting 55grs of FFg Goex under two thin beeswax discs under a Lyman 457124 385gr cast bullet of approximately 1:20 tin/lead sized to .459 with 50/50 beeswax/deer tallow BP lube. This load groups nicely at 50 yards and the gun has gone 40 rounds straight without fouling out. I do not expect much of a score due to my aging eyes and the iron sights are fixed (the sight ramp used to gravitate upward under recoil so I seized it up with a dab of fingernail polish to keep it in place). I do not know the velocity nor the ballistic coefficient of the bullet or else I would go to the Hornady ballistics calculator to get my answer to holdover.
Thanks in advance. Even simple data points like "on zero at 50 yards puts you X inches low at 100yds, X+@150, and X++@200) will do.