RE: another vote .300 wsm
 

This seems to be a common problem with all the short mags....are you using factory ammo or reloads?
If you are using reloads the problem seems to be that the current dies made for the short mags are not setting the shoulders back far enough during FL resizing. It is easy enough to solve buy grinding just a bit off your shellholder so the brass goes further up into the body of the die. This will set bach the shoulders far enough to allow easy chambering. The dies seem to be just sizing brass to the max SAMMI spec for the shoulders but many rifles seem to have thier chambers at the minuimun of the SAMMI spec for the same measurement.

I had the same problem with my 70 and this idea solved it. It is an absolute tack driver for a Magnum rifle (.300 WSM). This rifle would chamber factory and virgin brass reloads but not any fired brass even if it was fired in that rifle without significant effort that left shiny spots on the brass where it met the bolt face.

More info on this can be found at www.shortmags.org

RE: 7.62X63MM IS GREAT
 

hey hunter.......... what i am trying to do is HELP hunters save their money !!!!

of course a 300 ultra mag is faster and hits harder but THERE IS SUCH THING AS OVER KILL !!!! the 15 dollars i save on buying 30.06 shells every year compared to buying
300 ultra mag shells will help with my sons college !!!!!..........lol

RE: 7.62X63MM IS GREAT
 

If that $15 is that important,perhaps you really can't afford to hunt in the first place.

RE: 7.62X63MM IS GREAT
 

I hate it when I kill things too dead.

The bottom line on this one is the original question was asked by a 12 year old kid who can't tell us what kind of 7mm he shoots and probably can't handle any 300 mag class cartridge anyways so all this discussion is for nothing.

RE: Which 300
 

I like my old Ruger 77 in 300 win mag. I shoot 72 grs. of IMR 4350 behind a 180 gr Sierra game king bullet.

RE: Which 300
 

300 winchester

RE: Which 300
 

Right now .308 win, but if I ever find a .300 H&H I can afford I'm buying it:);)

RE: Which 300
 

goes without saying the 300 ultra mag

RE: Which 300
 

The main thing to ask w/ the calibers you are talking about is the belted vs. nonbelted case, the only thing that is definate is that belted cases will have a bit shorter life when you reload, no big deal. The 300RUM is a good(but expensive) cartride, but isn't all its cracked up to be, and has little power advantage over the 300win, and none over the weatherby(expensive ammo and brass). They are ALL!! a step up from the 7mm you've got now, remember that the ballistics tables dont show you that w/ the same energy the larger caliber will hit harder. Also the 30 cal has the most choices for bullets. Soo.. Cheap rounds, great performance, 300Win. hands down. It only lacks cool factor.

RE: Which 300
 

The 300ultramag has more case capacity than the 300wby and when loaded to the same pressure will produce more velocity.

RE: Which 300
 

My vote is for the RUM. Ballistics are close enough between the Wby and RUM to make it a wash. Weatherby's just cost a whole bunch more and I think Remingtons a better action/rifle. IMHO

RE: Which 300
 

high power hit it on the nail. stubblejumper - I wasnt saying there wasn't a difference, just that to get that tiny velocity jump you really have to pour the powder to it and the more you push it the less efficient the powder will burn. In the end lots more powder very little velocity gain. Factory ammo on weatherby & RUM are expensive.

RE: Which 300
 

Pse-archer
Bigbulls gave you the scoop. He is right. Not enough info from you. If you want to shoot Elk at normal distance’s (muzzle to 300 yards then a 30-06 would do just fine) any thing over this and one should try the lost art of stalking. Be that as it may, may hunters want to shoot farther, and that is when the 300 magnums come in. The 300 Winchester is the most available over the counter round of the list you picked. It has a well deserved reputation as a fine Elk rifle. Reloading components are plentiful as well as rifles. I had a Remington 700 BDL many years ago but sold it for a new 30-06. I now use the 308 Win.

Hope this helps
Hornet Man

RE: Which 300
 

I own two 300ultramags and have developed loads for one more.I have owned one 300wby and developed loads for one more.On average the 300ultramag will drive a 180gr bullet 100fps faster.If I wanted efficiency I would go for the 308win.If you are considering a 300 magnum with more capacity than the 300wsm or 300win mag you might as well take the extra 100fps that the ultramag offers over the weatherby.I did not consider the 30-378 or warbird because of the price of rifles and brass.

RE: Which 300
 

Don't agree on that one at all... They are inexpensive to reload for compared to any Weatherby and are a bit faster. There is no comparable 30 caliber in their price point period. What interests me is they seem to be extremely accurate cartridges. I have seen some groups at 300 yards with RUM's that some rifle/cartridge combos would be hard pressed to match at 100 yards.

RE: Which 300
 

I can reach speeds of 3400fps with 180gr bullets with no pressure signs with RL25 in my 300RUM. I have never been able to do that with my weatherby.

RE: Which 300
 

I hand load my 300win w/ 180grs and crony 3200ft/sec. Had some hotter, but signs of preasure talked me out of it. I'm sure you can do better w/ the RUM, but not much. To get a distinct advantage you would have to go w/ the 30-378. the ultra is the top of the batch(WIN.,WEATH.,RUM.)but it is definately still in the same class. The RUM does have a clear glamour factor going for it and ALL 300mag hit hard. My only point was that the writers all said it was right on the heels of the 30-378 and not close at all to the win and weatherby, which isnt the case.

RE: Which 300
 

The 300 ultramag is a good 100fps faster than the 300wby but a good 100fps slower than the 30-378.It is just as close to the 30-378 as it is to the 300wby.

RE: Which 300
 

Is that what you find with your RUM and 30-378? Whats your data for both rounds you and worked up?

RE: Which 300
 

.300 Winchester

GO CANADA

RE: Which 300
 

300 win mag tones of take down power, never tried the others.

RE: Which 300
 

A friend has the rem elk foundation 300 ultra mag>I shot it and it is very accurate,he has a muzzle brake on it and I couldn't believe the light recoil on that light rifle.it was like shooting my 260.Think he said that he uses 102 grs of powder so you won't get to many rounds from a lb.He doesn't shoot it much because with all that powder it heats up FAST.I shot it at a rock @400 yds and watched the rock explode through the scope it was awesome,
Another friend has a win mag and have seen him shoot one hole 3 shot groups with it,
A young fellow has a 300 wby at the range and have never seen him shoot good groups with it.
The fellow with the 300 ultra and I and another friend was shooting clay birds at 500 yds,he shot the ultra,me and the other were shooting 270 and 300 wsm and hit just as many birds as he did.
I too would go with the 300wsm it does quit well.This is my limited experience with all four.

RE: Which 300
 

M .300 Wby. 150 SP H300150SP .338 3540 3225 2932 2657 2399 2155 4173 3462 2862 2351 1916 1547 2.6 3.3 0.0 -8.2 -22.6
this is garbled,but i shoot the 150 gr sp and it is very accurate at 300 yds also.it is however 150gr rather than 180gr being talked about.i do not have an instrument to check the speed,but as can be seen from wby ballistics chart, it is 3540fps.

RE: Which 300
 

Ballistics charts are often very optimistic.My own 300wby would only produce 3450fps with 150gr loads.

RE: Which 300
 

Go with the Ultra and get a muzzle brake

RE: Which 300
 

300win