300 RUM Lets hear it

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Feb 28, 2021
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I’ll start by saying I love my small calibers 223 & 243 BUT I like my 300 WM a lot and shoot it as well as my other small stuff, that being said I don’t shoot it for fun like the others. It’s a tikka cut to 19in with a break (I live in ca). I have it in the back of my mind that one day I’ll own a RUM. A couple things that hold me back, I don’t reload, I don’t shoot at game beyond 600yds, tikka doesn’t make them/mag length and I have all my guns set up the same O and I don’t know how much more oomph I’d get back over the WM.

Would love to hear about those that love’em and hate them.

Cheers,
MV
 
I have a 22” 30 Nosler Tikka t3. Spits 210gr bullets at 3030fps. Might get you best of both worlds. Factory ammo would be a challenge though since you don’t reload.
 
That was slightly abrupt.

A RUM gets you a couple hundred fps over a win mag. It also gets you faster, more abrupt recoil. I shoot mine fairly well, if I really concentrate. It also starts to make my vision blurry after 12 or 15 rounds in a row.

If you don’t handload you can’t get the most out of the round. And you have to make an action choice that will let you seat bullets that will make it worthwhile to use a big cartridge like that.

If you don’t handload that won’t matter anyway though, so you are just buying more noise and recoil.
 
That was slightly abrupt.

A RUM gets you a couple hundred fps over a win mag. It also gets you faster, more abrupt recoil. I shoot mine fairly well, if I really concentrate. It also starts to make my vision blurry after 12 or 15 rounds in a row.

If you don’t handload you can’t get the most out of the round. And you have to make an action choice that will let you seat bullets that will make it worthwhile to use a big cartridge like that.

If you don’t handload that won’t matter anyway though, so you are just buying more noise and recoil.
Appreciate the expanded response, especially the last part.
 
Buy it if you really want one, but without reloading, I wouldn’t go with a RUM. Your 300 WM has way more factory options available.
 
I have a 22” 30 Nosler Tikka t3. Spits 210gr bullets at 3030fps. Might get you best of both worlds. Factory ammo would be a challenge though since you don’t reload.
And there was no issue with the magazine and feeding? the 300 prc would be tempting to spin on if it fed cleanly
 
And there was no issue with the magazine and feeding? the 300 prc would be tempting to spin on if it fed cleanly
I went with mountain tactical bm and mags and I had issues with the mags popping out under recoil. After my latest contact with their CS, the issue seems to be resolved. There are other companies and options to go with. I wanted to stay away from airs pattern mags for my own reasons.
The 300 prc is a magnum length cartridge and won’t fit in a tikka (to my knowledge). It’s also slower that the nosler and the rum. The Hornady train will support it and probably have the cheapest factory ammo, by over half.
 
... I don’t shoot it for fun ...
This ain't your job. You don't have to do things that aren't fun. Your money is better spent on things that are either fun or make more money to be spent on fun.

I've been around a few RUMs but never had a use for one. 2 out of 3 owners are no longer owners. All three bought them because they just like that sort of thing.
 
An acquaintance of mine recently gave me a deal I couldn't pass up on a nice Remington 300 RUM as he couldn't shoot it well. I swapped the stock with a 7 Mag I have and fixed the trigger so it wasn't a 50 lb. pull. loaded up some 175 TMK and and took it to the 1000 yard range. It's a great sub MOA rifle but it takes about a pound of powder every time you pull the trigger!
 
A buddy has a hot rod jeep with more horsepower than is ever needed and one ton axles and suspension that really lets those big 44” tires work their way over some incredible obstacles. You can ride the exact same trails on a Honda 90, the decision is yours. Sometimes more bigger is the extra most bestest.

The amazing thing about a RUM is as a factory cartridge it absolutely maximizes the factory Remington action - it’s not possible to go any longer or a larger case head with the steel in the Remington without having structural problems with bolt lug setback. Issues with 338 Lapua bare this out.

The 300 RUM and 338 RUM are my hot rods - they may not be needed, may not be practical, are definitely not fun to spend a lot of time plinking with, but they bring joy to my heart and everyone who shoots one for the first time will have a big smile on their face.

The 300 RUM is the 300 Weatherby for guys who don’t like Weatherby. It’s a little faster, but that doesn’t really matter since it’s filling the same niche as the Weatherby. You can hammer a saber tooth cat at 25 yards, brain a wooly mammoth at 100 yards, drop an Alaskan moose at 5 football fields, and still be perfectly geared for a record book caribou running across the ATV two-track at 200 yards.

“Yeah but,. . .”

Come up with 100 reasons why it’s not practical and none of that matters when you get the adrenaline rush of 700 horse power.
 
I went with mountain tactical bm and mags and I had issues with the mags popping out under recoil. After my latest contact with their CS, the issue seems to be resolved. There are other companies and options to go with. I wanted to stay away from airs pattern mags for my own reasons.
The 300 prc is a magnum length cartridge and won’t fit in a tikka (to my knowledge). It’s also slower that the nosler and the rum. The Hornady train will support it and probably have the cheapest factory ammo, by over half.
Slower than the nosler or rum? With what bullet weight and factory loads? Not with any bullet thats very long.

Nosler and RUM need rethroated (and thus using handloads) to pass prc velocities. Irrelevant to someone using factory ammo - even more so with that being the only plan.
 
Slower than the nosler or rum? With what bullet weight and factory loads? Not with any bullet thats very long.

Nosler and RUM need rethroated (and thus using handloads) to pass prc velocities. Irrelevant to someone using factory ammo - even more so with that being the only plan.
Depends on the barrel really. Nosler at 2850 with 225’s and a 22” barrel compared to my old 300prc with the 212’s at the same velocity and a 24” barrel. That prc went down the road and is my sample of one barrel in the chambering.

Effectively the same with a sample of one each, but I didn’t see a need for the longer action to get the same performance with the 30 Nosler. Shooting anything over the length of 225’s, a guy should have a longer throat (and action) or just go prc, I agree with you there, and the factory load options.

I always forget how restricted non-reloaders are, how few options they have, and the outrageous amount of dollars per shot they have to pay.
 
Depends on the barrel really. Nosler at 2850 with 225’s and a 22” barrel compared to my old 300prc with the 212’s at the same velocity and a 24” barrel. That prc went down the road and is my sample of one barrel in the chambering.

Effectively the same with a sample of one each, but I didn’t see a need for the longer action to get the same performance with the 30 Nosler. Shooting anything over the length of 225’s, a guy should have a longer throat (and action) or just go prc, I agree with you there, and the factory load options.

I always forget how restricted non-reloaders are, how few options they have, and the outrageous amount of dollars per shot they have to pay.
I personally dont have a use for a rifle that CAN NOT shoot factory ammo, even if i reload. Why have a 300 rum or nosler - with a throat that makes any load, except handload, worthless? I dont like the idea of not being a plane ride or several hour drive away from taking a few hours to make a few boxes of ammo and buying more. Beyond that - you dont actually have reloading data when you are doing that with the C.O.A.L being much different.

Unknown munitions, copper creek, and a few other custom load makers show 300 prc speed as superior/even at worst with anything over 200 grains. 250 grains (what id want to shoot really long range) its not even close.

As far as ridiculous prices - thats what i imagine the struggle for brass will be like when the 30 nosler dies off from lack of support and interest and 30 nosler/rum isnt offered in many riflles. Factory ammo in the RUM and Nosler will be a fortune.
 
When comparing velocities it gets confusing because of this or that. SAAMI pressure barrels and measured velocities are more uniform than uncle Todd’s handloads in a mega magnum compared with someone else’s factory loads in a Proffit Reeping Cartridge in a completely different brand of rifle. Pressure barrels are closer to match barrels than typical cheap factory production tubes, but for better or worse it’s nice seeing professionally tested loads in multiple cartridges. Here’s the SAAMI pressure data for a few big 300 mags and it matches what I’d expect: 200 gr 300 PRC is about 2,800 fps, 300 Wby 2,900 fps, and 300 Rum about 3,000 fps.

IMG_0456.jpeg
 
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