To adjust my PCP rifles, I've always followed the methodology discussed and recommended many times on this forum, and honestly, it's worked for me. Since it worked for me, today I was at the club explaining this methodology to a shooter, and together we got the rifle working properly. So far, so good. But another shooter who was listening came over and immediately told me I was completely wrong.
The rifle in question is an FX King .22 with a 600 mm barrel. In my explanations, we start with a regulator at 75 bar, with the macro in position 13.
18 gr JSB pellets, and proceed with 3 group shots at position 13, another 3 group shots at position 14, and continue in this manner until reaching position 23. What I'm looking for is the smallest or closest group at 50 yards. At the 21 macro setting, we achieved near-perfect accuracy. We then used the stopwatch and measured the velocity at setting 21, which was 940 fps; at setting 22, it was 947 fps; and at setting 23, it was 948 fps. It was slightly increased with micro-adjustment, and the velocity did not increase.
From this, I deduce that with the macro in position 21 and making some micro-adjustments, the deviation can be slightly adjusted. In short, I copied my King's settings and applied them to this other shooter's. The differences are that mine, with the same pellet, prefers 937 fps, while this other guy's prefers 941 fps. And from 250 to 100 bar, I got 115 shots.
Well, I'm satisfied, yes, but this other shooter tells me I'm doing it very wrong, that I have a very low regulator and a soft hammer blow, that it's better to raise the regulator to 100/120 bar and have a stronger hammer, that I would get more shots, more consistency, that the regulator would work better, and I would recover faster. Honestly, I don't know if he's right, and I don't want to ruin my setup either, but I have a doubt. He's talking so confidently and he's getting me into trouble. Maybe he was just a conceited charlatan who wanted to brag about what he doesn't know.
Now I ask, which do you prefer? Would both settings work in theory, or which one is the correct one to achieve the desired FPS?
Low regulator and soft hammer.
High regulator and hard hammer.
The rifle in question is an FX King .22 with a 600 mm barrel. In my explanations, we start with a regulator at 75 bar, with the macro in position 13.
18 gr JSB pellets, and proceed with 3 group shots at position 13, another 3 group shots at position 14, and continue in this manner until reaching position 23. What I'm looking for is the smallest or closest group at 50 yards. At the 21 macro setting, we achieved near-perfect accuracy. We then used the stopwatch and measured the velocity at setting 21, which was 940 fps; at setting 22, it was 947 fps; and at setting 23, it was 948 fps. It was slightly increased with micro-adjustment, and the velocity did not increase.
From this, I deduce that with the macro in position 21 and making some micro-adjustments, the deviation can be slightly adjusted. In short, I copied my King's settings and applied them to this other shooter's. The differences are that mine, with the same pellet, prefers 937 fps, while this other guy's prefers 941 fps. And from 250 to 100 bar, I got 115 shots.
Well, I'm satisfied, yes, but this other shooter tells me I'm doing it very wrong, that I have a very low regulator and a soft hammer blow, that it's better to raise the regulator to 100/120 bar and have a stronger hammer, that I would get more shots, more consistency, that the regulator would work better, and I would recover faster. Honestly, I don't know if he's right, and I don't want to ruin my setup either, but I have a doubt. He's talking so confidently and he's getting me into trouble. Maybe he was just a conceited charlatan who wanted to brag about what he doesn't know.
Now I ask, which do you prefer? Would both settings work in theory, or which one is the correct one to achieve the desired FPS?
Low regulator and soft hammer.
High regulator and hard hammer.
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