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"heavy ball-type"って事なら"7.62mm.x54R Type-D"で通称" yellow-bullet tip"だ。

＞Czech heavy ball. Made in the early 1950s this was a boat tailed bullet weighing 181 grains and 38.5 mm. long.
＞The bullet core was of steel and the bullet bore no identification color code.
＞At the same time the Czechs were also manufacturing their copy of the Russian Type "D" bullet, this having
＞the same yellow-bullet tip as the Soviet made bullet