Shooting prone with a .22 rimfire is good substitute when longer centerfire ranges are not available. 50 foot gallery is all about following the fundamentals of marksmanship. No wind to consider but the international target[A36] is not easy by any means. 50 and 100 yards adds the challenge of some mirage and wind. The target closest to the old official 200 yard is the Highpower SR42. At that distance the 40 grain bullet has a real rainbow trajectory. I never shot for group but keeping 95% or better shots in the ten ring required watching conditions and releasing good shots. The same skills needed for Mid and Long range centerfire.
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