BENCHREST SHOOTING OPINIONS
Summary:
Cleaning does not affect group size, and no “lube seasoning” is required.
There is a lot of variation in group size. About 100 groups must be fired, measured, and averaged to make any reliable conclusions.
Some group size variation is caused by the rest.
Wind affects poi little or not at all at lower wind speeds. Shooters cannot offset the poi to precisely correct for the wind at any wind speed.
About cant and bubble levels
Changes in temperature moves the poi.
Frequently, larger groups are caused by several flyers rather than one flyer.
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All data is for 5-shot 50 yard groups unless otherwise noted.
Opinions are based primarily on shooting data for four 22 rimfire rifle after 2/1/2020.
I suspect that some of the findings/opinions here apply to center fire cast bullet shooting.
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Equipment and groups
Since 2/1/2020:
CZ 457 MTR-315 groups
BSA 12/15-150 groups
Winchester M 52, pre A-170 groups
BSA International, MK II-140 groups
Total: 775 groups
Scopes: Weaver T36, two, T36XR, 1
Also, since 2/1/20:
Mossberg 44US-70 groups
Remington 513t-40 groups
Ruger Charger, Kidd barrel and trigger-50 groups
Total: 160 groups
Between 2017 and 2/1/2020
Charger-604 groups
Rem 513t-264 groups
Mossberg 44 US-200 groups
Win 52, pre A-115 groups
Total: 1183 groups
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