7mm RUM
- Thread starter mackillan
- Start date
Factory or wildcat? Given equal pressures, barrels, etc (which really doesn't exist, but for the sake of comparison), in factory; 7mm RUM, in wildcat, 7mm-378 Wby. Need to burn charcoal for the last one though. - dan
I agreee but this man likes a new toy.
I would love a 7mm STW but I may have to have one built.
I would love a 7mm STW but I may have to have one built.
For factory, i think the 7RUM tops the pile...But I *personally* don't see much attraction to it over the 7mmRM or 7WSM.
had lunch this week with a fellow who shoots thousands of rounds a year, mostly Target rifle. He sights in guns for rather high volume sport shop every year. some days he would sight in 15 To 20 guns.he told me that there have been a lot a fellows buying the Ulta mags in 7mm & 30 cal, he uses a lead slead with 20lbs shot on sled and the Ulta's still give you a whack, the same as a 30.06 with a tee shirt on and no sled. they just are not pleasant to shoot off bench, and he has notice last year customers wanting to trade these in on lessor kicking guns.
Whacks myself on the side of the head. 7mmrem mag and 7mm wby mag is good enoughThe 300RUM does produce substantial felt recoil in most factory rifles,with the Senderos being significantly softer recoil wise.My own 300ultramags weighed about 10lbs with scope and were quite manageable for myself and most people that fired them.The 7mmRUM shoots significantly softer,and the 7mmstw softer yet.If a person thinks that a 7mmRUM used with a lead sled and 20lbs of lead are harsh recoil wise,that person is recoil sensitive.
A 28 pound rifle platform gives you a whack? Methinks your friend is pulling your leg.
Ted
Your post isn't 100% clear, but ti sounds to me like the gentlemen is sighting in rifles for new rifle buyers?
If this is correct, then I must ask: If a guy doesn't know how to sight in his own rifle, then what the hell does he want a powerful magnum for?
Well I am not sure what is in fact the so called King of speed for 7s, but Iknow what I have pushed 140s nd 160s grain bullets at with Rums, and I can get them cooking.
The STW burns less powder and gets them almost to the same velocity.
If I use RL-25 and can push a 140 Acc-bond to 3700 fps, summer conditions vs a factory round at 3430. I have gone to Retumbo powder which Reduced my velocity to 3480 but gained 3 shot sub FLINCH (MOA) accuracy, Its not a terrible recoil but when you shoot 20-30 rounds it starts the flinch factor.
My second 7 RUM pushes 168s at 3279 +- and good accuracy again with retumbo. RL-25 seems to generate velocity but opens the groups up.
I will admitt, for accuracy and just plane shooting I like to shoot my 7mm rem mag more, as I can push 168s to a comfortable accurate velocity that tac drives.
The STW burns less powder and gets them almost to the same velocity.
If I use RL-25 and can push a 140 Acc-bond to 3700 fps, summer conditions vs a factory round at 3430. I have gone to Retumbo powder which Reduced my velocity to 3480 but gained 3 shot sub FLINCH (MOA) accuracy, Its not a terrible recoil but when you shoot 20-30 rounds it starts the flinch factor.
My second 7 RUM pushes 168s at 3279 +- and good accuracy again with retumbo. RL-25 seems to generate velocity but opens the groups up.
I will admitt, for accuracy and just plane shooting I like to shoot my 7mm rem mag more, as I can push 168s to a comfortable accurate velocity that tac drives.
Other than (maybe) 1000 yard plus competition bench rest rifles (shooting super heavy for caliber bullets) there is no upside here....Even in this case the extremely short barrel life makes any perceived advantage difficult to qualify......After all that a 6mbr/6.5-284/308Win/ will likely take the match......Note the 308 winchester.
Just being honest and not wanting to ruffle any feathers here, but IMHO the 7 Ultra is right up there with the dumbest hunting cartridges ever invented.
The cartridge adds nothing in terms of killing power, and in no way stretches a hunters "long shot potential" over say...The 7Rem mag. Most guys that shoot this thing end up using 140grain bullets and in the process negate its only possible advantage (wind).
The added recoil of the 7Ultra makes (long range) shooting a bit more difficult for the newer shooter. The extra high velocity recoil snap WILL cause misses with a newer shooter.
If you are interested in long range hunting a 7rem mag will service those needs perfectly. Buy the gun, get a decent scope, and go practice!
Good luck!
Just being honest and not wanting to ruffle any feathers here, but IMHO the 7 Ultra is right up there with the dumbest hunting cartridges ever invented.
The cartridge adds nothing in terms of killing power, and in no way stretches a hunters "long shot potential" over say...The 7Rem mag. Most guys that shoot this thing end up using 140grain bullets and in the process negate its only possible advantage (wind).
The added recoil of the 7Ultra makes (long range) shooting a bit more difficult for the newer shooter. The extra high velocity recoil snap WILL cause misses with a newer shooter.
If you are interested in long range hunting a 7rem mag will service those needs perfectly. Buy the gun, get a decent scope, and go practice!
Good luck!
Put a decent muzzle brake on the end like a VAIS and start shooting. Double up the ear plugs/muffs though. Recoil wasn't much worse than my 30-06 and a heck of a lot lighter than some of the factory 300Win mags i have played with.
I'm old enough to remember all those same arguments being used against the 7 Rem Mag, then the 7 STW. Basically, each of these cartridges simply gives you a slightly longer range then the one that preceded it, at a slightly higher cost in recoil. If you can comfortably use the capability, use them. If not, learn how to or use an easier cartridge to shoot. - dan
Yea it's the old argument that because it uses less powder (is more "efficient") and is easier on barrels, that the:
7mm-08 is better than the 7x57, which is better than the 280 Rem, which is better than the 7mm SAUM, whch is better than the 7mm Rem Mag, 7mm STW, 7mm RUM, etc.
The problem with that argument is, what if you want/need to push a 140gr bullet at 3400 fps? Is the 7x57 still better than the 7mm RUM?
I laugh at the "uses less powder argument" - is a few cents a round really a deal breaker? The "wears out the barrel argument" is strained as well (at least for hunting) - my hunting rig gets shot at most 50 times/year, usually 20. Even if accurate hunting accuracy is limited to 1000 rounds, that barrel will last 30+ years, which is well past how long I'll still be hunting and/or am bored of it.
You can argue that a 280 Rem is adequate for 90% of hunting situations, but some guys just want more, and there's nothing wrong with that.
7mm-08 is better than the 7x57, which is better than the 280 Rem, which is better than the 7mm SAUM, whch is better than the 7mm Rem Mag, 7mm STW, 7mm RUM, etc.
The problem with that argument is, what if you want/need to push a 140gr bullet at 3400 fps? Is the 7x57 still better than the 7mm RUM?
I laugh at the "uses less powder argument" - is a few cents a round really a deal breaker? The "wears out the barrel argument" is strained as well (at least for hunting) - my hunting rig gets shot at most 50 times/year, usually 20. Even if accurate hunting accuracy is limited to 1000 rounds, that barrel will last 30+ years, which is well past how long I'll still be hunting and/or am bored of it.
You can argue that a 280 Rem is adequate for 90% of hunting situations, but some guys just want more, and there's nothing wrong with that.
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Andy, I could not agree more ! With my Rums they only see 20-50 rounds per year, and I bet barrel life is alot more than we think to hold MOA, I do not need my 7mm Rums to shoot .1s and .2s and if after 1000 round it opens up to MOA, I realy do not care, as a 6 inch group at 500 yards works for me.
Powder is a silly arguement as I do not care if I need an extra scoop to push 150 fps faster is a trade off in any lage high pressure case, as you see time and time again.
Also some guys will tell you its a finiky case to load, I have not found this, its about the same as any magnum case, as long as you find the right powder for the gun your ok.
There is not question there is ballistic advantages to velocity, and the fact of the matter is I do not care if i hit him with 2000 or 5000 foot LBS as long as I hot him, and its sure it nice at 300 yards to just hold a few inches high and not worry about hold over.
Powder is a silly arguement as I do not care if I need an extra scoop to push 150 fps faster is a trade off in any lage high pressure case, as you see time and time again.
Also some guys will tell you its a finiky case to load, I have not found this, its about the same as any magnum case, as long as you find the right powder for the gun your ok.
There is not question there is ballistic advantages to velocity, and the fact of the matter is I do not care if i hit him with 2000 or 5000 foot LBS as long as I hot him, and its sure it nice at 300 yards to just hold a few inches high and not worry about hold over.
I see things a little different than some people here.In order to feel totally comfortable with a rifle at ranges to 500 yards,I want to shoot that rifle or a rifle with that same stock,trigger,scope and trajectory much more than most people.I usually fire around 100 rounds developing a load,and learning the loads trajectory and windage.I then fire that load at least 100 to 200 shots per year practicing at various distances so I know where to hold for different ranges,without having to think about it before taking a shot at a game animal.Since I have two identical 7mmstws shooting loads with identical trajectories,I can split the shooting between those two rifles.That shooting experience with my hunting rifles, results in me being confident with the gun and load to take shots that I wouldn't take if I only fired the gun and load for 20 rounds per year.
From what I have seen at the local range,most of the 20 round per year shooters have to look up trajectories or have charts taped to their stocks,or they blindly trust trajectory tables and really don't even know the actual trajectory produced by their loads.The vast majority of those people had difficulty placing shots properly at 300 yards,let alone 500 yards.
Yes many of those 20 round shooters do shoot other rifles,and other cartridges which does help with their shooting form,but unless the trajectory is the same,that shooting with other guns is not as good as shooting their actual hunting load from their hunting rifle.
I have shot out one 7mmstw barrel,which took over 1500 rounds over about 5 years,when I only had one 7mmstw,but with two guns,and a little less shooting,I expect that I could easily get 15 years before rebarreling again.
If I only intended on shooting 20 to 50 rounds per year out of my hunting rifle,I would buy a 7mmremmag,limit my shots on game to 300 yards or so, and not bother with the 7mmstw or 7mmRUM.
From what I have seen at the local range,most of the 20 round per year shooters have to look up trajectories or have charts taped to their stocks,or they blindly trust trajectory tables and really don't even know the actual trajectory produced by their loads.The vast majority of those people had difficulty placing shots properly at 300 yards,let alone 500 yards.
Yes many of those 20 round shooters do shoot other rifles,and other cartridges which does help with their shooting form,but unless the trajectory is the same,that shooting with other guns is not as good as shooting their actual hunting load from their hunting rifle.
I have shot out one 7mmstw barrel,which took over 1500 rounds over about 5 years,when I only had one 7mmstw,but with two guns,and a little less shooting,I expect that I could easily get 15 years before rebarreling again.
If I only intended on shooting 20 to 50 rounds per year out of my hunting rifle,I would buy a 7mmremmag,limit my shots on game to 300 yards or so, and not bother with the 7mmstw or 7mmRUM.
7 Rum
Just wondering how you find the ABs at high speed. I am useing the 160 TSX at 3300 and while it kills very well its also very destructive. Haven't managed to stop any yet, do the ABs hold up or blow up?
