Desire to build a 300 RUM

DO IT!!!

Are you looking to handload or are you stictly going to shoot factory ammo?

If money is no option, there are good ones out there. Just make sure you get one that is set up to load long and can accomodate the components you want on the rifle (BDL, DBM, etc).

The Rem factory action is not cut to load long to take advantage of the case capacity. If you want to do that, you can either single feed (not optimal for a hunting rig) or you can have the action modified by cutting the mag well to fit an extended mag box, shorten the bolt stop, and potentially open up the ejection port. I did this on mine and now I can load 3.85" vice the 3.6" factory offerings.

RUM is fun...

Where in VA are you? I am in Fxburg.
 
If I was going to build a 300 rum, then I would use an impact action. They are a Remington 700 clone action. That action has massive support and lots of gunsmiths have already have their specs. You will be able to call up the smith and have them send you a barrel. Spin it on yourself and go shoot!
 
Screenshot_20240924_183917_DuckDuckGo.jpg
 
Mines built on a Stiller action with a carbon fiber barrel. I chose to stick with the shorter magazine as I knew I'd be shooting lighter grain higher velocity bullets. In my case, 203 grn Hammer HHT's. I have a 338 Edge that I shoot the big stuff out of. There's lots of possibilities for the RUM.
 
If you call defiance they can make any action load a 4" round. Moa rifles was one of the few that made an action that would be able to use a 4" 300 RUM, now that Defiance and MOA rifles are both owned by Bob Beck. Also make sure to get a bottom metal that will work for that long on a round. I have one of Moa rifle in a 300 RUM and it's an awesome caliber with a 230 Berger.
Good luck with your build,
Jason
 

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