.300 Norma or .300 RUM (can’t decide!!!) What

.30cal fanatic

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Oct 3, 2017
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I’m wanting to build a new rifle for the upcoming 230 & 250 A-TIPs and can’t decide on a cartridge to push them.

Narrowed it down to these two cases predominantly for case capacity and brass availability.

I’m not ruling out another cartridge if someone can highlight one I should also be looking at.

I like the RUM as i can use just a magnum bolt face and not a lapua unit. Also Mcmillan will do a carbon for a RUM and not a Norma action.
Not too fussed about the single feeding issue with the RUM. What advantages does the Norma have over this case besides mag feeding?
 

sable tireur

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Personally, I would ask Ryan Pierce about buying one of his Lapua bolt face actions and make the 300 Norma Mag. I've been shooting the 300 RUM since it first hit the market and the cartridge length with these longer, heavier bullets is not necessary. But you apparently don't have any hesitation about the RUM so just run with it.
 

.30cal fanatic

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I should also add that I only reload and do not shoot factory ammunition so there is no real advantage of going the 300 PRC or 30 Nosler.

Iv had quite a few .300 WM’s and love them but want a bit more velocity for the 230-250’s. Really I want to push them at around 3000-3100 FPS. The RUM seems to be the most logical option but am I missing something ?
 

sable tireur

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Really I want to push them at around 3000-3100 FPS. The RUM seems to be the most logical option but am I missing something ?
This will depend upon the length of the barrel you choose to use. Limiting the length to 26" and loading this 250 A-Tip out, you could see 2,750 fps, maybe 2,800 if your really push it but no more. Now, longer competition barrels like the ELR lengths might get you closer but remember, with this case capacity and bullet weight you could be limited to 3, maybe 4 powders without running surplus.
 

longshot406

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I should also add that I only reload and do not shoot factory ammunition so there is no real advantage of going the 300 PRC or 30 Nosler.

Iv had quite a few .300 WM’s and love them but want a bit more velocity for the 230-250’s. Really I want to push them at around 3000-3100 FPS. The RUM seems to be the most logical option but am I he missing something ?
Look at the 308 Baer. I think it would do it. I’m easily pushing the 210’s over 3150.
 

Quicksilver338

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I’m currently getting a 300 Norma improved built by Ryan pierce. Look into his setups and the accuracy and consistency all his rifles are getting. He is doing something right! With a hot load of h1000 or warm load of N570 you could get the 230’s to 3100fps easy with the improved cartridge. Barrel life over 1000rds too so not sure how this compares to the RUM? I’m a Lapua guy so the bolt face was a must, have the option for the 338 route as well. I would strongly suggest a 300 Norma improved!
 

Rick Richard

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I’m currently getting a 300 Norma improved built by Ryan pierce. Look into his setups and the accuracy and consistency all his rifles are getting. He is doing something right! With a hot load of h1000 or warm load of N570 you could get the 230’s to 3100fps easy with the improved cartridge. Barrel life over 1000rds too so not sure how this compares to the RUM? I’m a Lapua guy so the bolt face was a must, have the option for the 338 route as well. I would strongly suggest a 300 Norma improved!
I have seen lots of good comments about him and his work. Also, seems to be a bit lower in his prices compared to other gun builders out there. The Norma Improved is a good way to go in my opinion.
 

Elk Hunter 338

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300 RUM all day long and here's why its the one that I would choose.
1. its one of the most underrated cartridges out there and gets a bad name for being way over bore, which usually comes form people that have no experience with it with powder and bullets that actually use the case capacity up... but a 180 @3400 plus is pretty sweet too hahahahahaha… I want it even more !!
2. if your a single loader its even better, I would suspect that in a 26-28" barrel built right you'll see 3k with 250 MATCH using the right powder .. probably RL50 RL33 Or h50bmg N570 or 20n29. I know with 230 hybrid in a 26" ive seen up to 3050fps (not relined) with h1000 and this will run 6 plus firings on norma cases
3. quality dies are everywhere for 300 rum, you will have to get a really good expensive set of dies for the 300 NM IMp that is cut perfect or you will fight the dreaded "click"
4. quality brass is everywhere
5. load data is every where
6. any powder you stuff in it it will shoot
7. ive owned both the 300 NM imp and 300 ultra and haven't seen anything either cartridge can do better than the other if built right
8. no fireforming which usually means twice if not three firings to get improved rung out and to where its at full capacity and no more growth
9. the 300 rum from new to 8th firing never changes from first shot.
not saying the 300 NM IMP is not an awesome cartridge which it absolutely is just saying the 300 RUM is also great and Gets more flack than credit and its been kickin ARS since 99!!!
we have the most options ever and for good reason we the long range shooter expect better every year and we get it!!
either way you decide it will be an absolute hammer and youll enjoy it, just my 2 cents on why I would and will always own a 300 RUM.
 

Rick Richard

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300 RUM all day long and here's why its the one that I would choose.
1. its one of the most underrated cartridges out there and gets a bad name for being way over bore, which usually comes form people that have no experience with it with powder and bullets that actually use the case capacity up... but a 180 @3400 plus is pretty sweet too hahahahahaha… I want it even more !!
2. if your a single loader its even better, I would suspect that in a 26-28" barrel built right you'll see 3k with 250 MATCH using the right powder .. probably RL50 RL33 Or h50bmg N570 or 20n29. I know with 230 hybrid in a 26" ive seen up to 3050fps (not relined) with h1000 and this will run 6 plus firings on norma cases
3. quality dies are everywhere for 300 rum, you will have to get a really good expensive set of dies for the 300 NM IMp that is cut perfect or you will fight the dreaded "click"
4. quality brass is everywhere
5. load data is every where
6. any powder you stuff in it it will shoot
7. ive owned both the 300 NM imp and 300 ultra and haven't seen anything either cartridge can do better than the other if built right
8. no fireforming which usually means twice if not three firings to get improved rung out and to where its at full capacity and no more growth
9. the 300 rum from new to 8th firing never changes from first shot.
not saying the 300 NM IMP is not an awesome cartridge which it absolutely is just saying the 300 RUM is also great and Gets more flack than credit and its been kickin ARS since 99!!!
we have the most options ever and for good reason we the long range shooter expect better every year and we get it!!
either way you decide it will be an absolute hammer and youll enjoy it, just my 2 cents on why I would and will always own a 300 RUM.
I knew you would chime in.
 

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