Curious to learn more about your load, as it seems much better than I have experienced. Do you have chronograph data for your load? Personally have found a 40 caliber (.390” diameter) patched roundball leaving the muzzle at 2000 FPS or so and sighted in at 75 yards will be about 10” low at 125 yards and drift nearly 2’ in a 10 mph crosswind. Not exactly amazing or flat shooting at the 125 yard marker in my experience, so I would love to hear more specifics about your experience with your rifle and load.
In my posted statement, I’m going by point of aim. I didn’t see the need for a chronograph to determine point of aim. In my state the .40 calibre is a minimum calibre for big game, so though mostly for punching paper and stalking rabbits and squirrels…I was curious to see what the gun could do. Essentially, out to 125 yrds I found that I’m aiming right at the target and my groupings are staying, reasonably well within the kill zone, a 6” black radius of the center bullseye.
Once I have a load that I feel is accurate in my firearm, I want to know where that load is hitting at various distances. This will make me more competitive at club shoots and more proficient and ethical when hunting live game in the field…I want to know, for all my guns, where is it hitting at 20 yrds, 25 yrds, 40 yrds, 50 yrds, 75 yrds, 100 yrds, & 125 yrds.
Depending how much time I have at the range, temperature, and various general shooting conditions, I like to shoot 5 shot groups at targets under 80 yrds. If it’s overly hot, cold, windy etc. I don’t even try to collect shooting data, and spend my time working on Kentucky windage, and off-hand shooting at targets and gongs.
Targets start to get fuzzy for me at 100 yrds, so I’ll shoot 10 shot groups, or more at 100 yrds & beyond; looking for a pattern in the overall group to see if I’m leaning high, low, left, right, etc. I’m a traditional shooter, so only open sites on all my muzzleloaders.
Now for me, 100 yrds is a reasonable limit for big game, I can safely say that most of my big game are harvested under 100 yrds. In my younger days, with better eyes, that was not the case….I’ll still want an idea of what’s happening beyond that distance...so 125 yrds is reasonable, and it’s easy for 100 yrds and 125 yrds to be confused when hunting. Once an animal is beyond 125 yrds, it’s pretty easy to say…yeah, that’s a bit far, and I’ll bide my time and work to get another 25, to 45 yrds closer, then re-estimate the shot; and decide to take the shot or work in closer still…so 125 yrd grouping is a good buffer. I don’t carry a range finder, when hunting in a traditional manner.
I was very surprised that I didn’t have to compensate for 100 yrds, I was expecting a 40 grain load to hit low at 100 yrds. I just aimed right at the target, aimed the best I could and managed to keep 9 of 10 shots in the kill zone. The 100 yrd group looked solid, and fairly evenly spaced. The one shot that was out of the kill zone was high at 2:00.
Then I set up and started shooting at 125 yrds…same thing. It shocked me. I’m not really shooting what I would consider a hunting load in my .40 calibre, it’s 40 grains of fffg. I’m not overly experienced with this rifle, the gun was ordered back in December 2020, and arrived November of 2021…I half expected my shots to be noticeably low at 125 yrds, most likely in the region of the very edge of the bottom of the target, 1/2 on paper & 1/2 off paper.
Nope, not what I got…10 shots, 8 in the kill zone, 2 low at the bottom. 1 at 5:00, and 1 at 7:00. That is actually flat shooting out the 125 yrds. I’m happily surprised.