Quickload for 375 rum

[chrisb97]

Hi I was wondering if anybody would be able to run a quickload for a 375 rum with a 350smk seated at 4" OAL. Finally finished my rifle but am at a loss for max case capacity and where to start out and with powder so scarce don't want to burn through lbs of powder trying to find which one will give me the best velocity. Thanks in advance

 

[Buster Hemlock]

What powders do you have? Just ran some numbers for another guy so I have Quick Load up in front of me.

 

[Buster Hemlock]

Also there is an ongoing post here about 375 RUM.

375 ultra mag

Hello, Just picked up a remington lss in 375 ultra mag, anyone shoot/reload this caliber?

www.longrangehunting.com

I'll still run Quick Load for you but these guys are actually shooting them and probably have better insight.

 

[chrisb97]

Also there is an ongoing post here about 375 RUM.

375 ultra mag

Hello, Just picked up a remington lss in 375 ultra mag, anyone shoot/reload this caliber?

www.longrangehunting.com

I'll still run Quick Load for you but these guys are actually shooting them and probably have better insight.

I have rl-17, rl-22, h1000, retumbo, and h4831sc. And only reason I ask is I had the throat cut out longer for the 350smk for a max OAL of 4.05 and it increased the usable case capacity but by how much I have no idea. Thanks

 

[Buster Hemlock]

Again, I'd hit up the boys on the linked thread I previously posted for some real world input. That being said from what you have to work with and Quickload I'd look at H4831SC and RL-22 in that order, due to temp stability but the RL-22 shows potential for a bit more speed. H-1000 and Retumbo were slow, at least in Quick Load. First photo is H4831SC and second is RL-22. Start low and work up.

 

[chrisb97]

Again, I'd hit up the boys on the linked thread I previously posted for some real world input. That being said from what you have to work with and Quickload I'd look at H4831SC and RL-22 in that order, due to temp stability but the RL-22 shows potential for a bit more speed. H-1000 and Retumbo were slow, at least in Quick Load. First photo is H4831SC and second is RL-22. Start low and work up.

Once again I really appreciate it

 

[Blackdirt Cowboy]

H1000 and retumbo are too slow for the 375 RUM. You need something with a faster burn rate. If you could find some RL16, you’d be golden.

 

[MagnumManiac]

RL17 should get you there.
I have a 375 Weatherby and I found what works for that also works for the RUM.
I use H4350 and Win 760 the most.

Cheers.