New Backpack Rifle Build - Help

[JM151]

I’m looking to build a new rifle on the Manners folding stock. My goal is to build a lightweight heavy hitter, short barrel, and running suppressed. Spotting impact will be a factor as well. The two cartridges I have it narrowed down to are 300 Rum in a 18” barrel shooting (Berger 215) or a 338 Edge in a 20” barrel shooting (Berger 250). The specs will be:

Manners Folding Stock
TIx or AntiX
Bartlein 3B
UM DBM or Wyatt’s 4”
Suppressor Magnus-S-RR (yes this can does reduce recoil like they advertise). I got several more on order Magnus-k-RR and a Magnus-S-RR in 338
Trigger Tech Diamond

So out of the two cartridges and barrel lengths which would you recommend? Does anybody have experience with a 18” 300 Rum?

 

[greyghostnw]

whats your goal for velocity for the 215’s? Available powder to use?

 

[JM151]

@greyghostnw well my 300 win mag 24” barrel is throwing them 2840 so I’m thinking at least 3050 with H1000. End of the day if I’m at least 2975 I’m good.

Powders I pretty much have everything H1000, Retumbo, N570, RL26

Plan is to sell my 300wm if I go 300 RUM….it’s a Fierce factory rifle and I don’t really like it.