How much better is the 300 RUM over the 300 win mag at long ranges up to say, 600 or so yards? I already have a 300 win mag and know it's a flat shooter at long ranges, just wondering if the RUM would be any more flatter shooting and more accurate.

The 300remmag adds about 200fps over the 300win mag which does provide a slightly flatter trajectory.Accuracy depends far more on the gun and load than on the cartridge.

Well you can plug in these numbers if you can figure out trajectory. There won't be alot of difference. Lets compare apples to apples: both cartridges shot out of bolt action guns with 26" barrel. both shooting same 180 gr bullets. with handloads. Pretty much book max handloads at that. Expect in the neighborhood of 3100 fps out of the 300 win mag and expect 3300 fps out of the 300 RUM. So yes the RUM is flatter shooting but not so anyone would notice the difference if you were shooting at them at 500 yds! Now, on accuracy--that has more to do with the gun than either of these cartridges. If you are using a stock factory gun off the showroom floor, it's the luck of the draw. one might be a good shooter while the next one won't keep three shots under 3" at 100 yds.

Actually, if we're going to compare apples to apples, lets compare the right apples!

Granted, using 180 grain bullets you may see little if any difference. Certainly, the 300 RUM really comes alive with a 28" tube, and heavier bullets like the 220 gr. Comparing the two is like comparing a CRX and 70 SS Malibu and saying the CRX is faster because it uses less fuel.

So, according to the Nosler Reloading book (just for the sake of argument) look at 220 gr. data for both. You will find the Winnie at 2693 fps and the RUM at 2987 (thats almost 300 fps) next, we input the data into RCBS .load and you will find some interesting things. Now, whether they translate into "better" or "more lethal" is a debate for a different thread. You will find that the RUM has 25% more energy at 200 yards; it has 33% less holdover at 300 yards (9" vs. 6"-assuming both are sighted in to a max. ordinate of 2.1")Difference in holdover at 400 yards is 20" vs. 28" (if you like holding over "air" then Winnie if not then RUM)

I do not own one, nor do I really want to. I think if the debate is about "do you need one" or "The RUM is more lethal" etc. I would have to defer to any person's personal opinion. But, I think when comparing the two ballistically, in my opinion its not fair to say the difference is minimal or only slight......the RUM out performs the Winnie by a significant margin.

IV

Nothing is flat shooting at 600 yds. That's why you use a rangefinder, click your scope, have extra reticle lines, etc. Flat shooting will never make a hit at 600 yds. Accuracy will. Resistance to wind drift helps. A well practiced shooter helps the most.

Sorry, back to your question. The real advantage of the RUM is being able to shoot a 200 faster than the Win can shoot a 180, a 240 faster than the Win can shoot a 220, etc.... For the same "flatness" you can use a bullet that will resist wind drift a bit better, hit a little harder and penetrate a little farther....

Is it necessary? Not at all. But that doesn't mean it's not fun to have.

Bottom line is that it is better. About the same difference between the 06 and the 300 Win Mag. Extra power is always handy if you are willing to trade off to get it. Thumbs up if you can shoot it well.

IMO there's no usable advantage in the RUM over the .300 Win Mag.

I just bought a 300 Rem Ultra Mag a couple weeks ago. I also own the 300 Win Mag. The way I see it for hunting. It has more power, can shoot flater, [ I'm talking about the 200gr & the 220gr bullets ] and takes more powder.

I've always thought that when one found the 300 win mag lacking, the answer was the 338 win mag, not more speed.

That said, if I were building a rifle solely for poking deer at 600 yds, I'd go with a long barreled 300 ultra.

If any of you have read my post on the a-bolt you know I've got a Browning 300rum and it is a pretty good shooter. I've only used 180gr bullets so cann't answer as to heavier ones. I also own a custom 300mags and using 180gr bullets the 300rum is over 200fps faster and the 300rum has appr 2" less drop at 300yds. I've been shooting and comparing bullet drop on the 300rum,30-338 and 300wsm at 200 and 300yds. Yesterday for the fun I loaded up some IMR7828sc and 165gr interbond and I was 4" higher than the 180gr load at 200yds. IMHO I think the 300rum will be at it's best with powder like imr7828sc and the longer bullets like the interbond your not going to give up much case capacity and your still going to get the velocity. I've got some 200 gr accubond may try them tomorrow in the 300rum. When you compare the 300rum and 300mag side by side using 180gr bullets the increase in powder of the 300rum and velocity gain over the 300mag isn't all that great you use appr 10% more powder for appr 7% gain in velocity. If you compare the 300rum to the 300wby you use appr 5% more powder and and gain 6% more in velocity with the 300rum. I also own a 300wby and fired factory and reloads in the 300wby and 300rum to get a better handle on what is what. I think the 300rum is more in line with the 300wby. Well good luck.

quote:

Originally posted by vapodog:
IMO there's no usable advantage in the RUM over the .300 Win Mag.

Thats lunacy.........why then would anyone choose the .300 win mag over the 30/06, same reasoning aplies. Lets all sell our Magnums and only use the 30/06, oh wait a minute why would one choose the 30/06 over the .308 win, the 100 or fps makes no difference what so ever.

So there you go we should now all use .308's oh the 30/30 winchester.........................................and so it goes.

If you want it get it, the oppurtunity cost is a little more recoil and less barrel life, who cares if you have to replace a barrel occasionaly.

quote:

Originally posted by PC:

quote:

Originally posted by vapodog:
IMO there's no usable advantage in the RUM over the .300 Win Mag.

Thats lunacy.........why then would anyone choose the .300 win mag over the 30/06, same reasoning aplies. Lets all sell our Magnums and only use the 30/06, oh wait a minute why would one choose the 30/06 over the .308 win, the 100 or fps makes no difference what so ever.

So there you go we should now all use .308's oh the 30/30 winchester.........................................and so it goes.

If you want it get it, the oppurtunity cost is a little more recoil and less barrel life, who cares if you have to replace a barrel occasionaly.

Cannot agree more...

It's very simple...more veloity IS ALWAYS a GOOD THING from an exterior ballistics standpoint.

However, if you can take advantage of it or simply, want it, well...that's another story

quote:

Thats lunacy.........why then would anyone choose the .300 win mag over the 30/06, same reasoning aplies. Lets all sell our Magnums and only use the 30/06

Correct...that's exactly what I've done.

quote:

Originally posted by Gustavo:
It's very simple...more veloity IS ALWAYS a GOOD THING from an exterior ballistics standpoint.

quote:

Originally posted by vapodog:

quote:

Thats lunacy.........why then would anyone choose the .300 win mag over the 30/06, same reasoning aplies. Lets all sell our Magnums and only use the 30/06

Correct...that's exactly what I've done.

Vapo,

you sneaky bugger you left the rest of my post out if you follow your phillosphy you should trade down the .30 cal tree from your 06 to .308 and then on down to 30/30 win......I can't re-call a .30 cal round thats less powerful than the 30/30 but at any rate you should be using it

Personally I don't give a bugger what others like to use but all rounds have there uses and an oppurtunity cost associated with them. I to am a big fan of the 30/06 by the way but I reckon the .300 RUM is a heap of fun I have just returned from a trip and got to see it work on 10 head of game and it's fantastic and allows for hits further out than my 30/06 did which I figure I may have shot a tad over 500 head of game with that.

The .300 RUM is an impressive cartridge. There is no doubt it will shoot flatter than the .300 Win Mag, but it also boots you a good bit more and the muzzle blast, especially in a braked rifle is vicious. Much more, in my opinion, than the standard Win Mag. As for accuracy, I have seen very accurate examples of both, so would call it a draw.

-Lou

quote:

if you follow your phillosphy you should trade down the .30 cal tree from your 06 to .308 and then on down to 30/30 win......I can't re-call a .30 cal round thats less powerful than the 30/30 but at any rate you should be using it Big Grin

you mean the .30 M-1 carbine?

FWIW I didn't state philosophy....I simply stated that IMO the .300 RUM offered nothing tangible over the .300 Win Mag.

The flatter tradjectory and longer range it offers is so incrementally small that I don't know any that can determine the difference let alone utilize it.

The laws of limiting returns so seriously affect the (so called) new cartridges that extremely few folks are actually able to tell the difference.

I'll even go so far as to say that there's only a very few skilled enough as a shooter and hunter to actually utilize the advantages of the .300 RUM over the .30-06 as a hunting tool.....as a target cartridge there is a difference.

Vapo,

I actually could not think of a round that was less powerful than the 30/30 but I suppsoe the .30m-1 is the least powerful.30 cal round in existence ??

I think there is a difference between the rounds from a "varminting point of view" and from heavy barrelled guns bigger scopes etc.

for a light weight hunting rifle the extra grunt would be harder to utilise agreed......but in the right gun with the right optics I think the extra power can be used.

Glad we all think differently otherwise she would be aboring forum

You guys down under see the world looking up....we here in the states look the other direction.....

It's no wonder we see things differently.

quote:

Originally posted by Jon A:
Nothing is flat shooting at 600 yds. That's why you use a rangefinder, click your scope, have extra reticle lines, etc. Flat shooting will never make a hit at 600 yds. Accuracy will. Resistance to wind drift helps. A well practiced shooter helps the most.

Sorry, back to your question. The real advantage of the RUM is being able to shoot a 200 faster than the Win can shoot a 180, a 240 faster than the Win can shoot a 220, etc.... For the same "flatness" you can use a bullet that will resist wind drift a bit better, hit a little harder and penetrate a little farther....

Is it necessary? Not at all. But that doesn't mean it's not fun to have.

Jon A has it right IMO. Nothing short of a laser is flat shooting at 600 yards. The .300 RUM drifts a bit less in the wind. It is very accurate. But if a guy isn't going to shoot it a lot because he is afraid of burning up the barrel (which he will eventually) then a guy with a lowly .308 Winchester will outshoot him everytime.

quote:

a guy with a lowly .308 Winchester

LOWLY?????

The World is full of second hand super magnums, where the original owner found out that high velocity in a .30 caliber gun comes at a price of high recoil. If you are comfortable with the level of recoil, go for it. If not, stay with a cartridge you are willing to shoot enough to shoot well.
- mike

quote:

If you are comfortable with the level of recoil, go for it. If not, stay with a cartridge you are willing to shoot enough to shoot well.

Indeed and I feel 300 fps with a heavy bullet for the caliber is significant.

quote:

Originally posted by vapodog:

quote:

a guy with a lowly .308 Winchester

LOWLY?????

I think you know that was a bit tongue in cheek.