Hi,

I'm wondering what you guys who have a rifle in this caliber think about it. I guess it hasn't been around for that many years so I'm wondering if it met your expectations? Why should I get one, or why shouldn't I get one? How do you rank it compared to the 300 Wby?

My attraction to the 300 RUM is not one based on logic. I have a 308 Win and a 375 H&H which are perfectly adequate for the type of hunting that I do. But I'm very excited by the RUM and I've always wanted a cartridge that swallows 100+ grains of powder. I have had a 300 Win, 340 Wby, 358 Norma, and 458 Win, so I don't really consider myself recoil-sensitive.

Pros and cons regarding the 300 RUM?

I own the 300 RUM also the 338 RUM. The 300 RUM doesn't recoil that bad at all with me. I put a Burris 4X16X44 scope on it and Have shoot it to 600 yds. First shot went right into the bull eye. One thing about this rifle once sighted in thats where the bullet goes. I'm taking it Black Bear hunting in Aug. up in Canada. I really like my RUMs.

I have two win mod 70 300 rums. I like them a lot.

They do burn a lot of powder though. Guess that is my only complaint.

I have a rem 700 PSS in .300 rum with Badger rings and base, canjar trigger and leupold 6.5-20x50, it will put three 200 gr Nos Accubonds under .5"at 110 yards if I do my part.

It shoots flat allows me to not worry about hold over or wind as much and it hits very hard. I use it for shooting vermin over the bonnet of my ute in Western N.S.W where the ranges can be quite long on the open salt bush plains.

I would like a second .300 RUM one day in a sako stainless 75 for a carrying gun as the PSS is quite heavy.

My load is 88 gr of AR2225 (Retumbo) behind the Nos 200 gr accubond and Fed 215m GM primer seated just off the lands, I don't think it's a screamer of a load but shoots great.

The .300 RUM is a great round and if you get one you will love it.

From what I read it's an accurate round to.

I have two 300ultramags built on 700 actions.They drive the 180gr tsx at 3380fps and so far I have taken 9 elk and 2 moose with them.I used to own a 300wby mag and find that the 300ultramag delivers about 120 fps more with the same bullet.

My Sako M-75 300 Rum shoots 200gr Accubonds like this at 200yds:




I shot this Elk at 536yds with that combo:




Yeah, I like it..................DJ

quote:

Originally posted by djpaintles:
My Sako M-75 300 Rum shoots 200gr Accubonds like this at 200yds:



Yeah, I like it..................DJ

I see your M-75 Sako does not have a magazine but rather a floor plate do all sako .300 RUMs have the floor plate rather than a detachable mag ??

I like an integral mag much better !!

Thanks for your much appreciated feedback!

So... nothing negative except powder consumption, which I sort of already knew

The gun I'm considering is a new Rem 700 SS. I haven't actually seen the gun yet, so I don't know what the "SS" means other than stainless. If I'm lucky it might be a Sendero since the gun store sometimes labels the guns in stock incorrectly, but most probably it's the plain SS.

The RUM's are very hard to find in my neck of the woods, so this is probably the only gun I could even consider. I wouldn't buy a used one - who knows how many rounds the previous owner put thru the barrel...

dj,
Very impressive! Wow!

quote:

Originally posted by PC:


I see your M-75 Sako does not have a magazine but rather a floor plate do all sako .300 RUMs have the floor plate rather than a detachable mag ??

I like an integral mag much better !!

The 3 RUM M-75's I've had all had the Floorplate. I'm not positive but I think that the RUM's all have them. The Floorplate gives a little extra room in the box as compared to a Removeable magazine..................DJ

Nice shooting at 200 yds, DJ. But that can hardly be an average group, right?

If it is, it outperforms my 6PPC benchrest rifle

quote:

Originally posted by exabit:
Nice shooting at 200 yds, DJ. But that can hardly be an average group, right?

If it is, it outperforms my 6PPC benchrest rifle

OK this is maybe a more "typical group" from this rifle. It is at 300yds:




You will note that this is for 3 of 4 shots. The first 2 were in the lower hole. On the 3rd shot I completely flinched and pulled the shot all the way off of the paper! Disgusted with myself I resettled myself and shot the 4th shot back towards the original group. With the 300 RUM I'm never sure if the not as good of groups are due to slight flinching, wind etc. . But though that group isn't an "Average" group I've shot several similar ones on calm days when I'm concentrating enough to pull the trigger right. And it's a 3shot group instead of the 10shot groups that I've always shot in Benchrest matches......................DJ

Awesome shooting with such a "cannon"!

My son has the .300 RUM Rem in stainless steel with the pepper-laminate stock. Once loads were worked up, its been a great shooter. The only problem he's had is shooting over game. Seems I'd given him one of the Mannlicher-stocked Ruger 77s many many Christmases ago. He's so used to shooting that, his brain uses the .308 trajectory!

quote:

Originally posted by prof242:
The only problem he's had is shooting over game.

This would make a great commercial for Remington's Ultra Magnum line!

djpaintles,

my load is way mild compared to yours I am using 88gr of AR2225 which is Retumbo in the states..................90 gr would not shoot and if I get to 93-94 gr I get ejector marks in my rem 700 I think many rem 700 owners are getting ejector marks with the rum for whatever reason, I have no chrono so I am unsure what speeds 88gr of AR2225 is getting with the nos 200 gr AB's.

Love the sako 75 floor plate !!

PC, all of the 30 Caliber Sako M-75's I've had seem to have bores on the large side. At maximum normal powder charges they usually show velocities a little below normal maximums.
A Chronograph is one of the best pressure signs an average reloader can have. I think my Retumbo load is a little above normal but my velocities are about 50fps slower than most get with 200's. I've heard of several shooters getting 3100+ with the Accubond. But the way it shoots at 3050 I ain't changin nuthin!..... ...........DJ

i had a 300 run when they first came out it had a free floate barrel but a wood stock

i tryed bedding the action differnt powders differnt bullets and bullet weights i could not get the gun to shoot anything under 1.5-2" groups at 100 yards

i brought it back the the gun shop gave me a full refund. the only thing i use remingtons for now......are tomato stakes in my garden.

ill stick to blaser rifles at least i know there quality. and they garentee moa or your money back.

I only have had one experience with the 300 RUM and it is very positive.
A friend of mine got a new .300 RUM in a Stainless Synthetic Savage and asked me to scope it for him. He wanted a 4.5-14 Burris so we did that in Leupold bases and rings. The only ammo available locally was Factory Remington 180's. Bore sighted it cleaned it and in two or 3 shots had it in the middle of the paper, then my buddy shot a 5/8" group with it. Not bad in my opinion as far as a stock gun shooting stock ammo everything right out of the box.

put it this way i would love to owen a 300 rum as long as the gun is not made by remington!

I use H1000 powder for my 300 RUM and it pushes the 200gr partition at 3020 fps. Thats fast enought for me. Love those Remingtons.

I didn't even know that Sako made the 75 model in these calibers

I guess it might be a case of stuff that they only ship across the Atlantic. But I can't find these calibers even mentioned on their website either.

The most exclusive magnums available in Sako's is the now more or less extinct TRG-S which came in 30-378 and 338 Lapua.

This comment might spark some controversy - 300 RUMs are way overbore (big waste of gas!). If I were to get a RUM, it would be the 375 RUM and much closer to the correct bore. Regards, AIU

My Savage .300 RUM is also exceptionally accurate. I came up with this load after one trip to the range.I pulled the third shot !!

quote:

Originally posted by Ackley Improved User:
This comment might spark some controversy - 300 RUMs are way overbore (big waste of gas!). If I were to get a RUM, it would be the 375 RUM and much closer to the correct bore. Regards, AIU

You're just trying to start a flamefest....

"Correct Bore." Is that like the "correct" car color or "correct" hair color for women? "Correct" for what? Killing Cape Buff at 40 yds? Yeah, sure. Killing non-dangerous game (I think we ran out of Cape Buff in Montana and Wyoming....) with great precision and authority out to whatever distance the shooter decides is "fair?" The 375 isn't even on the same planet as the 300 for that....

240 grain bullets at 3000+...waste of gas, indeed.

JonA, here's some data for the two using Nos Part (.308, 220 gr BC=0.351) and 270 grs. Nos Failsafe (.375, 270 gr BC=0.393). Note that when both are loaded to ~63,000 psi, you get equivalent velocity but a lot more ft.# of energy with the 375 (4268 vs 5153), and essentially the same trajectory (actually the 375 is a bit flatter - that is, 104" drop for the 300 at 600 yds vs. 101" drop for the 375 [alt.=5000f ft above sea level and 32 oF]). Sorry, but I'll go with the 375 RUM.

220 GR. NOS PART(Maximum Loads) DIA. .308"

300 RUM H50BMG 100.5C 2850 62,500 PSI
300 RUM H870 104.0 2956 62,400 PSI
300 RUM RETUMBO 89.0 2905 61,900 PSI
300 RUM H1000 89.0 2863 63,500 PSI

270 GR. Nos Failsafe (Maximum Loads) DIA. .375

375 RUM H4831 104.0C 2922 62,900 PSI
375 RUM H4350 95.0 2932 62,600 PSI
375 RUM H414 93.0 2924 63,000 PSI

Moreover, here's some data for the 300 Win Mag loaded to roughly the same PSI using the same barrel length:

220 GR. SIE RN (Maximum Loads)

300WM RETUMBO 81.0C 2810 52,400 CUP (~63,000 PSI)

Note: The 300 RUM gets only ~146 fps more, and that using 104 grs. of H870, which you can't buy anymore.Using Retumbo the RUM gets only 95 fps more than the 300 WM. IMO that's "overbore." Actually, I believe the 300 WM is a bit overbore. The 30-338 is just about right for 30 caliber, given currently available powder types. Regards, AIU

If you wanted a flat trajectory,you certainly would not choose the 220gr partrition.

+1 Stubble, The 200gr Accubond has a BC of .588 and can be driven to 3100fps or so in a 26" barrel, in longer barrels even faster. It may be a little overbore in 26" barrels but provides an extremely usefull velocity with a premium hunting bullet with superb Sectional density and Ballistic Coefficient. It's a fantastic long range hunting round................DJ

exabit: I own a 300 RUM built on a 700 action. For the most part, I've used 200 Accubonds, with 100% success and satisfaction. My worst group was from a prone position in WY after walking a half mile to shoot at a target. I popped 3 bullets downrange at 105 measured yards (using a bipod) and grouped under an inch.

At the rifle range, I've been fortunate to see many small 1/2" and smaller clusters. The bbl is a 28" Shilen. I did get a muzzlebreak but I found that I didn't need it. After shooting a cohort's rifle (similar on a 700), the recoil just wasn't what I thought it'd be.

I like my 300 so much I'm thinking of building another with a Kostyshyn bbl I have on hand.

Current load I'm working on is a 240 SMK with US869.

quote:

I like my 300 so much I'm thinking of building another with a Kostyshyn bbl I have on hand.

I have two myself,both with 26" barrels.I prefer the 180gr tsx in my rifles,because they shoot accurate in my rifles and perform great on large game.With a muzzle velocity of 3380fps,they also provide a flat trajectory.

AIU, we're talking about accurately placing a shot and packing enough "overwhelming thump" to cleanly kill at extreme ranges...and you compare a semi-spitzer and a failsafe? Tell me this is a joke...you've got to be yankin' my chain. The best bullets for such a job have BC's twice that....

No, you can't get H870 anymore. You can get US 869 and it's better in every way. Check the data on that, put on your Quickload hat and the possibilities will be revealed...and keep in mind it works even better with bullets heavier than 220.

Having actually had both a 300 Win Mag and a 300 RUM in the exact same barrel, I can say the RUM is easily 200 fps faster with the lighter stuff and more like 300 fps with the heavies. I don't care about that though. What I like is being able to launch bullets ~35 grains heavier at the same velocities.

Doc, check out my post in the "my favorite loads" section. Keep in mind, "most" barrels will likely top out a couple grains lower than mine. You should easily get somewhere in the 3050 range. You'll also be very happy to hear, as wonderful as the 240 SMK is, an even better moustrap is on it's way....

JonA, you're missing my point. Let me restate it. Comparing the 375 RUM to the 300 RUM, both have essentially the same trajectory for long range hunting given bullets of roughly equal BC. Why? The 375 RUM will push a heavier bullet (of roughly the same BC) to roughly the same velocity or higher than than the 300 RUM and when both are loaded to equal PSI.

Then I can hunt elk in Wyoming out to 600 yds or beyond, and then go the Africa and have a weapon that is legal for the most dangerous game animals, such as cape buffalo or elephant.

To further make my point, I show REAL DATA on the 375 and 300 RUMs (24" barrels on both), both using Nosler Accubond bullets and available powders. Again, both loaded with appropriate powders (includine US 869) to roughly 63,000 PSI. Note that the trajectories for both are essentially the same, yet the 375 RUM provides roughly 1000 ft.# more energy at close range, when it's needed to stop buffalo or elephants. Both are more than adequate for North American game. Yes, the 375 has more recoil, but I don't think you'll notice it in the field, especially when that big bull makes his appearance.

Finally, I can push a 300 WM with 180 gr. bullets to ~3300 fps with a 26" barrel (using slow burning Re25 or Retumbo), and still be operating around 65,000 PSI.

260 GR. NOS Accubond (Max Loads) DIA. .375 BC=0.473
375 RUM H4831 101.0 2923 62,900 PSI
375 RUM H4350 92.5 2935 62,900 PSI
375 RUM H414 91.5 2933 62,900 PSI

Max Point blank range is 294 yds when zeroed at 249 yds.

Rangeyds/ Path in/Velocity fps/Energy [ft/lbs/OptimalGame Wgt
Muz -1.5 2935 4973 2564
25 -0.1 2891 4825 2450
50 1.1 2847 4680 2340
75 2.0 2804 4539 2235
100 2.6 2761 4401 2135
125 2.9 2719 4267 2038
150 3.0 2677 4137 1945
175 2.7 2635 4009 1856
200 2.1 2594 3885 1770
225 1.2 2553 3764 1688
250 0.0 2513 3646 1610
275 -1.6 2473 3531 1534
300 -3.5 2434 3419 1462
325 -5.8 2395 3310 1392
350 -8.5 2356 3204 1326
375 -11.6 2318 3101 1262
400 -15.0 2280 3000 1201
425 -18.9 2242 2902 1143
450 -23.2 2205 2807 1087
475 -28.02168 2714 1033
500 -33.2 2131 2623 982
525 -39.0 2095 2534 933
550 -45.2 2059 2448 885
575 -51.9 2023 2364 840
600 -59.1 1988 2282 797

200 GR. Nosler Accubond (Maximum Loads) DIA. .308" BC=0.588

300 RUM US 869 100.0 2919 61,800 PSI
300 RUM H50BMG 98.0C 2910 63,100 PSI
300 RUM RETUMBO 86.0 2988 62,800 PSI
300 RUM H1000 83.0 2850 62,800 PSI

Max Point blank range is 304 yds when zeroed at 257 yds.

Muz -1.5 2988 3965 1601
25 -0.2 2952 3870 1544
50 0.9 2916 3777 1488
75 1.8 2881 3686 1435
100 2.4 2846 3597 1383
125 2.7 2811 3509 1333
150 2.7 2777 3424 1284
175 2.5 2742 3340 1237
200 2.0 2708 3257 1192
225 1.1 2675 3177 1148
250 0.0 2641 3098 1106
275 -1.4 2608 3021 1064
300 -3.2 2575 2945 1025
325 -5.3 2543 2871 986
350 -7.7 2510 2798 949
375 -10.5 2478 2727 913
400 -13.6 2446 2657 878
425 -17.1 2415 2589 845
450 -21.0 2383 2522 812
475 -25.2 2352 2457 781
500 -29.8 2321 2393 751
525 -34.9 2291 2331 721
550 -40.3 2261 2269 693
575 -46.2 2231 2209 666
600 -52.5 2201 2151 640

Ackley Improved User is right he just left out one little issue. The 300 Ultra recoils at about 33+ pounds the 375 Ultra at 53+ pounds. That isn't trivial.

AI, Your facts are skewed. First of all you have the 200gr Accubond going about 100fps slower than is easily obtainable in most 26" barreled rifles.
2nd, of course the 375 RUM has more energy it also kicks a heck of a lot more. The 200gr Accubond is signifigantly more efficient at long range due to it's higher BC and it also has superior sectional density then the 260AB. Nothing wrong with the 375 RUM but it simply recoils too much and isn't as good a long range round, it is however much to be preferred for dangerous game.
Second, you cannot safely load 180gr bullets to 3300fps in a 26" barreled 300 Win Mag. You are fooling noone but yourself if you think you can. 3200fps is too fast and is overpressure. 3300 is stupid. You are endangering yourself and those around you when you overload rounds. It might shoot 1000rds OK and then blow on round 1001, I've seen it happen. 3300 with 180's in a 26" 300 WIN is NOT SAFE, please don't risk it...................DJ

My own experience with the 300 win mag put 200 grain bullets at 2900fps with retumbo. And with retumbo and the 300 ultra I was getting 3200fps with 200's.
Both with win mod 70's and 26" barrels.

My first 300 ultra a win mod 70 got 3200 with 200's, 3050 with 220's and 2850 with 240 grain bullets.

quote:

Originally posted by stubblejumper:
I prefer the 180gr tsx in my rifles,because they shoot accurate in my rifles and perform great on large game.With a muzzle velocity of 3380fps,they also provide a flat trajectory.

I love the 180 TSX, but believe it or not, to date, I still have not had time to work on a nice load. I have a "muscle load" for under 300 yards but not a precision load....yet anyway.

My next bbl length will be 26" I think.

quote:

Doc, check out my post in the "my favorite loads" section. Keep in mind, "most" barrels will likely top out a couple grains lower than mine. You should easily get somewhere in the 3050 range. You'll also be very happy to hear, as wonderful as the 240 SMK is, an even better moustrap is on it's way....

....will do.

quote:

Originally posted by Ackley Improved User:
JonA, you're missing my point. Let me restate it. Comparing the 375 RUM to the 300 RUM, both have essentially the same trajectory for long range hunting given bullets of roughly equal BC.

Let me restate my point, which makes yours moot: "Given bullets of roughly equal BC...." You don't have that "given." In 30 cal you have bullets with BC's .6+, .7+ and even higher will be available in a month or two. To get into that range with .375 bullets they'll need to be 350-375 grains with any practical shape. You sure as heck aren't going to be able to launch them as fast as the 300 RUM can launch its "equal BC" bullets.

That's the point that matters at extreme ranges. Shooting elephants and buffalo is a different conversation.

Next,

quote:

200 GR. Nosler Accubond (Maximum Loads) DIA. .308" BC=0.588

300 RUM US 869 100.0 2919 61,800 PSI
300 RUM H50BMG 98.0C 2910 63,100 PSI
300 RUM RETUMBO 86.0 2988 62,800 PSI
300 RUM H1000 83.0 2850 62,800 PSI

Your data is completely bogus. That's the data for the 200 X. Suggesting data can be used interchangably with it the AccuBond is a good way to lead people into blowing primers, having to hammer open their bolts, or worse if anybody tries it the other way around since max loads vary by more than 10 grains between the bullets with some powders.

Their data for the 200 AccuBond isn't on the web but it is in HERE. 200 AB, 95.5 grains of Retumbo, 3048, 62,400 psi. And of course there's Accurate Powders, who don't list the AB but for the 200 Speer they list: 8700 110.0 3154 62,100. They list three different 200's and get over 3100 with all of them. Data HERE.

And that's all with a 24" barrel that nobody in the world uses with this round!

quote:

Finally, I can push a 300 WM with 180 gr. bullets to ~3300 fps with a 26" barrel (using slow burning Re25 or Retumbo), and still be operating around 65,000 PSI.

Sure you can. Does your's have the secret Weatherby option? I got there once in my Win Mag by accident. One of those "load them up in the winter, shoot them in the summer" mistakes before I knew any better. I gained 100 fps from the temp change. Yes, there were obvious pressure signs. That's one of the reasons I try and use as Temp Insensitive powders as I can these days.

quote:

I love the 180 TSX, but believe it or not, to date, I still have not had time to work on a nice load. I have a "muscle load" for under 300 yards but not a precision load....yet anyway.

My own load delivers an average of 5/8" groups in my rifles at 100 yards.I have tested them to 500 yards with satisfactory results.

Jon A-When someone tries that hard to skew ballistics to try to make the results favour their viewpoint,you might as well give up trying to reason with them.

Holy s**t! Those are accurate rifles!!!
djpaintles & bowhuntrrl, Well done!!
Talk about "meat getting rifles"!