Anyone have any good game loads developed for the 300 RUM? I'm looking for 180-gr bullets and powder combos that shoot into 1 to 1.5 inch groups at 100yds.-rob

I have a 300 RUM built on a Brno 602 action. In this rifle 95 grs of RL25 groups under an inch @ 200 yds. This is max in this rifle with the 180 gr barnes X so start @ 91 grs and work up carefully.

I have used 180gr game king,balistic tips and Hornady boat tails. Most accurate powders are H1000 and RL25. I get just over 3300 fps. The most accurate combo is 93gr of RL25 and the Sierra game kings, .75" at 100M.

My best load, which I developed specifically to duplicate the factory ammo is....180 Swift Scirocco, 88.5gr IMR7828 and Fed 215BR caps. Best group so far is 3/4" at 200 yds, with a 700 BDL LSS. Velocity is 3265 fps.

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"If guns are outlawed...only outlaws will have guns!

Thanks for the info. I tried the RL-25 load (96gr) with the Barnes X bullets ( got 3322 on the Chrono)this weekend. They looked good at 100yrds ( 1 inch groups) but fell apart at 200yds ( 5 shot,5 inch groups, note 3 went into 1 inch) heavy copper fouling in my barrel. The best so far is the Woodleigh 180 gr pp over 90 grs of Rl-22 at 3210. This produced multiple 3 shot 1.8" groups at 200 yrds. I'm going to try the sierra SPT and Sirrocco loads this weekend. Thanks-Rob

I haven't heard of many guns shooting those Barnes-X bullets very well. Even looking at the data posted under numerous calibers on this website (follow the "Reloading Pages" link), wherever the "X" bullets are tested, the groups more than double in size. They have never performed well in any of my guns. Yet I keep trying to get them to fly cause there's no denying their deadliness with near 100% weight retention.

I load for the 300 Rum also . I was wondering those that are using reloader 25 what type of velocity are you getting. Those that have chronoed them I should say. I tried it but have had better luck using ram shot big boy. I am still testing but have spoke to Ram shot and have been told that 3400 fps can be done without any pressure signs. I am working up to max load now, it has shrank my groups a fair amount, and is a ball powder so it measures very nicley. Just a bit of info if opthers are looking for a more velocity.

Steve in Mi-- what bullet and what gr. @ 3400 FPS?????????

I'd be suprised to get 3400 from a 26 inch barrel with a 180 grain bullet from the 300 RUM case. However, I'm sure it could easily be done with a 165 or 168 grain bullets. However, with a 28 or 30 inch barrel I believe this would be possible. With that said, I saw no pressure signs with the 3325 fps load using the 96 grains of RL-25 and the Barnes XLC bullet. Unfortunately, the accuracy was unacceptable. I saw plenty of pressure signs with Rl-22 loads and stopped at 90 grains with all the makes of 180's I tried. I have not tried ram shot Big Boy yet, but have heard good things about it. My guess is that either H1000 or 7828 will be the best powders for this gun with its 26 inch barrel.

The bullet was a 100 grn Sierra hpbt MK and the velocity was 3441 on avrg.I shot a a .64 group today with the 25-06 fire forming cases.

with the 165 sierra and 91 gr rl22 got 3375 and 2.5 inch groups at 300. with the 150 sierra and 96.5 gr rl22 got 3590 and just under 2 inches at 300. the 180 nosler factory load went 3250 at about 4 inches at 300 and thats all i have tried. all i hunt are whitetails so the 150 load is my choice.

So far the most accurate load I'v found in the .300 RUM is the 180gr Sierra HPBT match bullet behind 90 grs of Rl-22. This will shoot sub MOA at 100yrd and less than 1.5 inches at 200 yrds. While I would not hesitate to use this on whitetails,unfortunately, I need a load to use in Tanzania in July for bigger stuff. Having shot game in Africa before, the ranges tend to be long on antelope and I need a good deep penetrating load for this calibre.

I thought I'd bring this to the top and let you guys know the new Barnes manual has some good 300 RUM data. H870 is by far the velocity king as far as powders go basically all the way from 140's to 250's (I'm not surprised, I like that powder!). Here's an example:

113 grains of H870 behind the 180 XLC ==> 3400 FPS! What's more impressive is that velocity came from a 24" barrel. Even just a 26" tube should beat that by what, 100 fps or so with that powder?

That's a potent round. A solid 250 fps better than I can get from my 300 Win and I load it (probably too) hot.

If your looking for another good bullet for the 300 RUM try the 200grain sierra BT spitzer. I think you'll like it! It does very well in mine under 3" at 300 and I'm not done yet!

I didn't see you guys mention any loads with H1000. I am still working on this powder with this caliber. I have been using 92g of H1000 with Sierra SBT. Accuracy is 1.2" or so.

i changed to the 180 CBT balistic silver tip and 98 gr. RL 25 for 3435 fps.

H870 HUH? 3400 fps from a 180 and a 24" barrel? Impressive

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"Hope for the best.....Expect the worst!"

I use 96 gr of reloader 25 behind a 180 gr ballistic tip.Accuracy averages 1/2" groups and velocity runs 3375 fps.I have taken two bull moose and two bull elk with this load and performance was great.The rifle is a custom with a 26" pac-nor barrel.

i have been using aa8700 over 100 grains and 180 partition at 3410 in 26" factory barrel, and 180 scirrocco over 100 grains 8700 at 3385 fps, this load shoots 1 1/2" groups at 200 yds every time i take the gun out. have shot 4 8lb kegs in the last 2 years thru the ultra mags as well asa a 300 stw and an 8mmRem mag, all 3 guns love it.

Pop you are right 3400 fps with 24" barrel,the most impressive,I wonder how long the barrel will last,may be 1000 rounds...

Eric: Let us know how those ballistic tip hold up on game at tha speed! Thanx

the 4 whitetails i killed with the 180 b.t. at over 3400 last year all folded at the shot.
one was a 191 pound field dressed [live wieght was around 250] Ky. 8 pointer at 6[six] yards.the bullet didnt exit,but it took the deer off the ground and left it in a pile.

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SPEED KILLS

Jon A;113grs H-870,180 XLC,24" barrel=3400; a 26"barrel=3500.I use a .30-378 WBY,no way I can go beyond 3350 without having pressure signs,3500 I am sure the bolt mechanism will be completly soldered in. I must presume your barrel is very fast...

I hope this works:

I will not do this again, those who want a KB in front of their face, it is their choice. All of this data on the web. If you are going faster than listed, you are in KB zone. Have fun.

These are the pressure tested powder manufacturers loads.

Manufacturer Powder Charge Bullet 180gr Velocity Pressure (psi)
Alliant Rl-25 96 Swift 3250 63,700
Rl-25 87.9 Barnes 3110 61,500
Rl-22 90 Nosler 3165 60,800

Hodgdon H50BMG 108 Speer 3159 62,100
H870 106 3206 58,200
H1000 96 3218 62,800
H4831 89 3167 62,500
Retumbo 100.5 3300 62,400

IMR 4350 81.2 Swift 3130 62,000
4831 82.8 3090 61,000
7828 89 3140 61,000

4831 82.9 Sirroco 3060 60,000
7828 88.6 3100 59,000

4350 80.5 Nosler 3110 62,000
4831 81.4 3070 60,000
7828 87 3140 61,000

Acurate 3100 89 Hornady 3256 Not Listed
8700 113 3254 Not Listed

3100 87 Speer GS 3182 Not Listed
8700 113 3304 Not Listed

3100 89 Swift 3205 Not Listed
8700 112 3189 Not Listed

3100 89 Nosler 3212 Not Listed
8700 113 3323 Not Listed

3100 86 Barnes 3126 Not Listed
8700 113 3286 Not Listed

[This message has been edited by Roger Rothschild (edited 05-03-2002).]

with RL25 you list 96 gr and 3250 as max.try the coated combined tech balisticsilver tip with 98gr.i get no pressure signs and 3435 over the chrony.
it also seems any of the 4350`s would be way to fast to even try.
if the powder is so fast that you cant use at least 90 grs in this case i would think you aint going to get the top speeds out of this case.

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SPEED KILLS

I have not yet used RL25 yet. I need to!

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"Hope for the best.....Expect the worst!"

rejpelly,

That's not my load. It's straight out the Barnes Manual. They list list 107 grains at 3359 as max for the X without the fancy blue coating.

If you can't get more than 3350 with a 30-378 something must be wrong. How long is your barrel? What powders are you using?

According to some rag articles, factory RUM 180's are clocking in the 3325 neighborhood from a 26" barrel. And you've got, what 17 grains more powder capacity?

Roger,

I'm not quite sure what you meant by that post. When they actually publish the pressures it just shows they are being conservative (wouldn't you be if you were publishing a manual?). SAAMI max is 65,000 for this round. The ONLY H870 load shown is at 58K--nearly 11% below max.

Why on earth do people insist on using faster burning powders in this round? Powders like H1000 are wonderful--for the 300 Winchester. The RUM has a much bigger case...why not fill it up with a powder that will put that size to good use?

Jon A,the rifle is Accumark 26".I have tried H-4831sc,H-1000,H-50bmg,it is the same thing,cannot go beyond 3350 with 180 grs.The .300 RUM is a different rifle,but I dont think everyone can reach 3500 mark with this one,not with the 26" factory rifle,a customized rifle is not the same thing,with a customized .30-378 I think that one can shoot the 3500 velocity without having pressure signs...

Buy a pound of H870 and try it. I really think you'll be glad that you did. It's slower that the other powders you listed and that's what you need.

Most of the stuff I have shows about 122 grains as max with a 180 give or take a little depending upon the source and bullet used. As always, work your way up to that. I don't think you'll be disappointed. What bullet are you using?

No, I don't think every RUM will get 3500 with a 180. Maybe a few, maybe none. I was just throwing that out there as a possible limit with a 26" and a low friction bullet.

But I do think somewhere between 3400 and 3500 should be attainable for most with a 26" barrel if they use the right powder. Why the reloading manuals use 24" barrels goes beyond me...I think most that buy a rifle chambered for this cartridge are going to have a 26" at least.

Good luck.

Has anyone actually used h1000 with the 180 gr in the 300 RUM? Results?

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"Hope for the best.....Expect the worst!"

Pop- I have tried h-1000 in two rifles with both 180 and 165 gr bullets.Accuracy was dissapointing in both rifles with the 180's and in one rifle with 165's.The second rifle averages 3/8" groups so far at 3450 fps with 165's(measured at -8 degrees celcius with older non extreme h-1000).I never bothered measuring the 180 velocities due to the poor accuracy.

Pop;with the .30-378 WBy,180 grs bullets,I found out with this powder you should care about pressure signs,always start at mininum.I tried H-4831sc,H-870,h-50bMG;THE ONE THAT I HAVE FOUND OUT with the most SD,it is the H-1000,I have fine velocity with this one,accuracy not worse than the others,but I think you should "tune" your reloads.The velocity was 3325,above is too hot load...

Ihave a factory rem 700lss. In the 300 ultra mag.With the 180 scirrocco, and Norma mrp powder acheiving 3500 fps and 1.5 inch groups at 200 yds with no problems. This was tested in 2 diff chrono's and in another factory gun. IMPORTANT the powder is the NORMA -MRP. NOT NOT the mrp-2.Don't have the load with me it was in the mid 90's SO START IN LOW 90's and work up. Also had to back the bullet off the lands to acheive accuracy. Good luck.

3500 fps with the 180's??? Man!!

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"Hope for the best.....Expect the worst!"

Russianhunter;do you have any signs of high pressure at this "impressive"velocity;do you neck size or full length size,do you use new cases or one two fired cases,what kind of brass do you use.I think your velocity need some more information;it is out of" normal "velocity from the.300RUM.

Well I got some 180 sciroccos loaded up with some rl 25 and h870. We'll see what happens!

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"Certified Rifle Crank!"

POP;it is the common sense to go.Good luck and good reloading....

Rejpelly With my mrp norma powder, got very little pressure signs. I use a full length die, and only new cases after i found my load.And for the accuracy my bullet length was .100 shorter than the factory overall length scirroco. The only problem i am having is getting my hands on the powder. Been searching for 2 years to find some in canada. Found 2cans last year in ontario.It has become a joke in this country, the only distributer for norma does'nt have a vault and the laws are not making it easy to import. IF YOU CAN GET SOME TRY AND LET ME KNOW.

Russianhunter;I am from Quebec,north from you."Lebaron has "limited"reloading components.I get my powders,bullets from Dante,it is not a "reloding"store,but they can usually get what I want with extra costs.If I can find the MRP,I will try it.Do you know any retailers in the Montreal area.If I can duplicate Weatherby load at 3350,it will fine for me...

Hello folks !

I'm curios about the high energy fed.ammo in .300 Wby which claims 3330 fps with 180 gr. bullet. are there somebody here to tell me about their experience, if you've tried these loads ? How is accuracy,my rifle is a 26" eurosporter.

Per "going - fast" 577