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Old December 15, 2011, 05:10 PM   #13
old roper
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Join Date: June 11, 2007
Posts: 2,155
barnes manual # 4 was published 2008 and they have no loading data for the Barnes (50gr TSX).

Barnes has been pretty good on twist for the TSX here a clip on the 224 cal TSX
Diameter Weight Description S.D. B.C. CAT#
.224" 45 gr TSX FB .128 .188 22441
.224" 50 gr TSX FB .142 .197 22440

.224″ (223/5.56)
Diameter Weight Description S.D. B.C. CAT#
.224" 53 gr TSX FB .151 .204 22443
.224" 55 gr TSX FB .157 .209 22444
.224" 62 gr TSX BT .177 .287 22460*
.224" 70 gr TSX BT .199 .314 22470*

*Recommended twist rate is 1:9 or faster #22460
*Recommended twist rate is 1:8 or faster #22470

In Barnes manual they do rec a 1/12 twist or faster for the 53gr TSX FB.

Far as I know there hasn't been any new reloading data from Barnes since Remington purchased them. #4 manual does have warning on twist with certain bullets. I called them about their 270 150gr TSX that required a 1/9.5 twist barrel since most 270 made in the US have a 1/10 twist barrel. Answer I got was the 270 150gr was made more for the rifles had have 9 to 9.5 twist barrel and that the 150gr may or may not shoot in my rifle.
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