There are two kinds of tests that I’d like to see done, with longer centerfire bullets.

First is a test showing accuracy both with and without the bullets going trans-sonic, but with both stable, no tipping or keyholing. Like my rimfire experiments.

Second is a test showing accuracy both with and without the bullets becoming unstable, but with neither going trans sonic.

I’m thinking 22 Hornet, 16” twist, at the long bullet threshold and with short bullets.

Below find the results of THE JACKETED BULLET TEST, for all examples showing instability. All 5-shot 100-yard tests.

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22-250, M11 BARREL, 12” TWIST, 53 GR BULLET, 3.0 TITEGROUP, FIRST BULLET STUCK IN BARREL

22-250, M11 BARREL, 12” TWIST, 53 GR BULLET, 3.5 TITEGROUP, 934 FPS, NO TIPPING, 4.125” GRP AVG.

22-250, M11 BARREL, 12” TWIST, 53 GR BULLET, 8.5 TITEGROUP, 1989 FPS, NO TIPPING, .975” GRP AVG.

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22-250, SHILEN BARREL, 9” TWIST, 68 GR BULLET, 5.5 TITEGROUP, 1342 FPS, BULLET SIDEWAYS

22-250, SHILEN BARREL, 9” TWIST, 68 GR BULLET, 6.0 TITEGROUP, 1442 FPS, 4 OF 5 IN 1.9”, 5^{TH}?

22-250, SHILEN BARREL, 9” TWIST, 68 GR BULLET, 7.5 TITEGROUP, 1715 FPS, MOST TIPPING, .9” GRP

22-250, SHILEN BARREL, 9” TWIST, 68 GR BULLET, 8.5 TITEGROUP, 1875 FPS, FEW SLIGHT TIPPING, .9” GRP

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22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 5.0 TITEGROUP, 1138 FPS, BULLETS SIDEWAYS

22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 5.5 TITEGROUP, 1243 FPS, TIPPING, 1.6” GRP

22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 6.0 TITEGROUP, 1345 FPS, TIPPING, 1.5” GRP

22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 6.5 TITEGROUP, 1403 FPS, TIPPING, 1.1” GRP

22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 7.0 TITEGROUP, 1403 FPS, SLIGHT TIPPING, 1.05” GRP

22-250, 223 22-250 BARREL, 9” TWIST, 68 GR BULLET, 8.5 TITEGROUP, 1750 FPS, SLIGHT TIPPING, .850” GRP

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223, STEVENS BARREL, 9” TWIST, 68 GR BULLET, 4.O TITEGROUP, 1025 FPS, WILD SHOTS

223, STEVENS BARREL, 9” TWIST, 68 GR BULLET, 4.5 TITEGROUP, 1188 FPS, MOST SIDEWAYS, 1.367” GRP

223, STEVENS BARREL, 9” TWIST, 68 GR BULLET, 5.0 TITEGROUP, 1349 FPS, TIPPING, 1.117” GRP

223, STEVENS BARREL, 9” TWIST, 68 GR BULLET, 5.5 TITEGROUP, 1491 FPS, TIPPING, 1.483” GRP

223, STEVENS BARREL, 9” TWIST, 68 GR BULLET, 6.0 TITEGROUP, 1632 FPS, TIPPING A LITTLE, .925” GRP

TIPPING A LITTLE THROUGH 7.5 GR TITEGROUP, 1923 FPS

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223, STEVENS BARREL, 9” TWIST, 53 GR BULLET, 2.5 TITEGROUP, 913 FPS, TIPPING A LITTLE, 3^{RD} SHOT STUCK IN BARREL

223, STEVENS BARREL, 9” TWIST, 53 GR BULLET, 3.0 TITEGROUP, 1220 FPS, NO TIPPING, 1.15” GRP

NO TIPPING AT HIGHER VELOCITIES

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