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Waterman here. I am the author of the articles on the Short in the Single Shot Rifle Journal. I called it a "personal odyssey" not an obsession, at least that's my opinion, just a science guy with a couple of fun rifles. I have done enough shooting with Fiocchi SM-200 to write about that, but no time yet to actually do the writing. Probably 3 more articles. I am using a Stevens-Pope as the primary rifle, with a Winder used for some of the more dubious ammo. Unertl 12X scope on both rifles. I looked up some velocities: CCI Target Shorts, out of box. 875 to 950. Mean 910. CCI Target Shorts all 38.8 gr: 835 to 885, mean 856. Rem Kleanbore from 1947: 930 to 985, mean 966. Lapua Rapid Fire, 2004: 650 to 910, mean 770. Fiocchi Normale: 900 to 985, mean 930. Eley Rapid Fire MA-56, 1972: 720 to 850, mean 790. Eley Rapid Fire MI-17, 1990? 785 to 845, mean 810. I need to add that we started out with 2 chronographs, a PACT and a Chrony. And we started out with the middle of the screens about 12 ft from the muzzle. We now use only the Chrony, with the front of the screen holder 5 ft from the muzzle. We plot each shot on a grid. High velocity shots always hit higher. Low velocity shots always hit lower. Gravity works, the longer the flight time, the greater the drop. My shooting at 25 yards is outdoors, but tucked in against a wall. Sometimes it gets windy enough to blow the Chrony screens over. At 100 yards, the S-P will keep the CCI Target Shorts inside the 18-ring (ASSRA target). At 200 yards, vertical dispersion is about 21.5", horizontal dispersion a smidge less than 6". We use the ASSRA gallery target at 25 yds. The old Remington stuff is not terribly accurate. I had a good solid hold, put one shot in the 24 ring on #4 bull. Second shot, aimed at the same place, was a 24 on the #5 bull. I tried some old Federal Monarks, 7.9" for a 10 shot group at 50 yards. IIRC, Super-X is worse.
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