because like you say been done an its 2.875" long an the 7mm rum in my mind is the biggest un efficent lomon of the rums down load the rum an you have a rem mag/ suam
when young crnkin had his 7mm rum still max load with 2225 an he just made 3k with 180s 3010fps think it was my screamer with same charge was 250 faster......
Our case that we are using is neck down, little turn, flash form an go offers easy dies an nice redding bushing dies even comp dies if you want them.
Barrel will last longer than the rum barrel, brass is better than rum brass, an will match rum speeds........normal rum speeds
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