Why do there not appear to be any really heavy-for-calibre bullets available for the .243?

For example, 7mm hunting bullets are generally available up to 175gn (SD .310),
6.5mm hunting bullets are easily available up to 160gn (SD .328)
but drop down just 0.5mm dia. to .243 (6mm) and the heaviest hunting bullet generally available is only 105gn (SD .254)

Is it a technical issue, or just lack of demand?

Peter



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