7MM RUM??

260shooter · Oct 12, 2024

It seems as though the 7MM RUM died around 2013 before the advent of heavy for caliber bullets and powders slow enough to take advantage of the big 7"s case capacity. The reloading manuals I have looked at either use my Grandpa's bullets or give a total number of a whopping 4 powder's.

My question is, with todays modern bullet's and powder's what are realistic velocities from eighter a 180 ELD-M or a 180 Hybrid target from a 26" 9 twist barrel?

Real world experience would be appreciated.

MagnumManiac · Oct 13, 2024

Unfortunately, when I had mine the slowest powder we had access to was 7828 and I took that last barrel off well before powders like Retumbo, H50BMG or N570 were available.
I would guess using powders this slow would gain between 50-150fps, but this is a WAS at this point. Mine had a 8" twist even back then, but the factory barrel was 9 1/4" twist which lasted 600 rounds.
I got high velocities with 175g bullets, 100fps faster, with RL25 when it came out. No other powder then could match it in several magnums.

Someone must be shooting one with 195's and slow powders here.

Cheers.

Rum Man · Oct 13, 2024

Following along for the Rum !
I was told Retumbo and the 180 gr berger for the Win !

Rum Man

rimfiremac · Oct 13, 2024

Long barrel and us869 would probably get any of the 190+ family flying faster than 3k, slightly faster for 180s

Total case capacity is 93% of the Lapua mag, so performance will be congruent

std7mag · Oct 13, 2024

If you're looking at the RUM for long range (ELR, ULR) I'd go straight to the 195gr Berger EOL or the 197gr MatchKing.

And with the case capacity and heavy bullet weight, I'd be looking for RL33 or something in that burn rate.

chav0_12 · Oct 13, 2024

I know I get 3k+ with 195s in a 28 Nosler. 1:8 twist would be the way to go even for 180s.

Willys · Oct 13, 2024

RL33 no longer available. N570 - tho 500 round barrel life expectation

azsugarbear · Oct 13, 2024

Some of the milsurp powders are also slow burning, such as WC 872. This is what I ran in my 277 Allen Mag (338 Lapua parent case) shooting the 195 gr. Matrix VLD.

Phil Rizzo · Oct 13, 2024

260shooter said:
It seems as though the 7MM RUM died around 2013 before the advent of heavy for caliber bullets and powders slow enough to take advantage of the big 7"s case capacity. The reloading manuals I have looked at either use my Grandpa's bullets or give a total number of a whopping 4 powder's.

My question is, with todays modern bullet's and powder's what are realistic velocities from eighter a 180 ELD-M or a 180 Hybrid target from a 26" 9 twist barrel?

Real world experience would be appreciated.

I'd feel safer with more twist for the heavies, likely 8.5 minimum.
But I'm +130MSL

Rum Man · Oct 13, 2024

I have the samt twist I believe 1/9 or so .
I dont think the barrel will like anything past the 180 gr mark .
Mine is a factory Remington 7 Rum .

Rum Man

Pdumont · Oct 13, 2024

260shooter said:
It seems as though the 7MM RUM died around 2013 before the advent of heavy for caliber bullets and powders slow enough to take advantage of the big 7"s case capacity. The reloading manuals I have looked at either use my Grandpa's bullets or give a total number of a whopping 4 powder's.

My question is, with todays modern bullet's and powder's what are realistic velocities from eighter a 180 ELD-M or a 180 Hybrid target from a 26" 9 twist barrel?

Real world experience would be appreciated.

Morning, mine likes the Rl 25. I'm also using Nosler Accubonds 160gr. Do not use the Nosler ABLR. They won't give you a consistent group unfortunately. It also likes super clean barrels. About every 8-9 rounds,

Calvin45 · Oct 13, 2024

Pdumont said:
Morning, mine likes the Rl 25. I'm also using Nosler Accubonds 160gr. Do not use the Nosler ABLR. They won't give you a consistent group unfortunately. It also likes super clean barrels. About every 8-9 rounds,

I can't imagine cleaning a rifle every 8-9 rounds!

Calvin45 · Oct 13, 2024

Anyways I asked a similar question a few years back and it generated some good discussion. Here's the link

Is the 7mm RUM dead?

Exactly what the title says. With the 28 Nosler, 7mm stw, 7mm weatherby and various Sherman cartridges all coming soooooo close to what the RUM can do, and with notably better barrel life…is the 7 RUM dead? Anyone here shooting one AND planning to stay with that cartridge in the future...

www.longrangehunting.com

Jim’s Hunt · Oct 13, 2024

I burnt my 7RUM out using 95.0 gr of Retumbo behind 160gr Accubond's. It was at 3350fps. Tipped over a bunch of elk and mulie bucks and a couple of speed goats. Sold the action and he turned it into a 300PRC

7MM RUM??

260shooter

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MagnumManiac

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Rum Man

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rimfiremac

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std7mag

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chav0_12

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Willys

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azsugarbear

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Phil Rizzo

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Rum Man

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Pdumont

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Calvin45

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Calvin45

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Is the 7mm RUM dead?

Jim’s Hunt

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