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FWIW, my 7 years old son handles a 75gr Speer FBHP under a full load of IMR7828 just fine. 100 grainers are a little too much for him.
The 243Win is an overbore cartridge and does very well with slow powders.
Last edited by mrawesome22; July 27, 2012 at 10:27 PM.
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