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7x54mm Lapua (6.5x55 base) - says 67mm OAL, I'd more believe closer to 80mm OAL!

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There is a reason why it´s so short. Most finnish factory loads used to have very light, only 5,1 g weight bullet. Most of those 7x54 caliber rifles have so low barrel twist that the heaviest acceptable bullet is 10,1 g and it´s shape should be like cylinder with round nose. I have it´s "cousin" i.e. 7x53R and it has very same "problem".

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