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Thread: 7x47 Jumbo

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  1. #19
    Member
    Join Date
    Jun 2012
    Location
    Tauranga
    Posts
    6
    Just had a look at the 300RUM case. If I keep the same neck length and 40deg shoulder and increase the case length from the first proposal (47mm) to 49mm I get the same case capacity as a 284Win. the 180vld's would need 2.9" COAL but could use 162 amax's under 2.8". Basically thats how the 7mmSAUM should have been done IMO. If we are looking for a little more horsepower than the 284 in a true s/a then need to use a fatter case me thinks.

 

 

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