As far as I know, these sights were manufactured by Stevens. They made these sets of combination sights (aperture and globe on the bottom, express V and blade on top) in two sizes: large for the Tip-Up rifles and small for the pocket rifles.
I own an excellent model 40 pocket rifle in .22LR, and have found that at close range, with the rear sight as low on the ladder as possible, the globe must be placed at the “6 o’clock” position of the target, rather than on top of the target as one might prefer for sporting use.
The distance between the centre of the front globe and the top of the front blade is the same as the distance between the centre of the rear aperture and the bottom of the rear V-notch. This would seem to indicate that the point of impact would be almost the same with both sets of the sights, at the same setting—as long as the sight picture is such that the express front blade is just barely visible at bottom of the rear V-notch. Perhaps you have been using “too much” of the blade.
I’ve always used the aperture and globe, so would have to try shooting with the express sights to make a proper comparison.
Even standard velocity .22LR cartridges may be too much for this small action from the days of black and semi-smokeless powders. I use CB and other subsonic rounds in my gun. An excellent new option is the CCI Quiet-22, which has the full 40-grain Long Rifle bullet:
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