7 mm ultra mag, good gun?
#11
Typical Buck
Join Date: Jun 2005
Posts: 604
RE: 7 mm ultra mag, good gun?
well claim 3200 with a 26" barreled rum all you want, hodgdon calls a max load for the rum and a 200 gr bullet at 2910 fps, so don't think it'll do 3200 without a longer barrel.
#12
Guest
Posts: n/a
RE: 7 mm ultra mag, good gun?
ORIGINAL: Pioneer2
Layne Simpson of STW fame was still able to get MOA accuracy from his 7mm STW after several thousand rounds were put through it.It will serve a lifetime of hunting as long as you look after it.At the range allow the barrel to cool a full minute between shots and don't try to use it as a praire dog gun rapid firing it at pests.At least with the STW brass can be obtained from 8mm Rem Mag.If you don't reload at least pick up a set of FL dies.The 7mm Ultra Mag may last or not.If you get one squirrel away several hundred brass and you're set for life........................Harold
Layne Simpson of STW fame was still able to get MOA accuracy from his 7mm STW after several thousand rounds were put through it.It will serve a lifetime of hunting as long as you look after it.At the range allow the barrel to cool a full minute between shots and don't try to use it as a praire dog gun rapid firing it at pests.At least with the STW brass can be obtained from 8mm Rem Mag.If you don't reload at least pick up a set of FL dies.The 7mm Ultra Mag may last or not.If you get one squirrel away several hundred brass and you're set for life........................Harold
#13
Join Date: Apr 2008
Location:
Posts: 54
RE: 7 mm ultra mag, good gun?
You know- if I shoot three shots through my .308 in rapid succession the barrel is hot.
What are you going to do with this rifle? Is this for hunting? If it is are you going to be shooting long range?
Do you plan on shooting a lot? Most people who hunt, have no need of a weapon that has more than a 1500 round barrel life.
If you want to discuss the full capability of this cartridge, I suggest you log onto: longrangehunting.com and register there and ask those guys. They will tune you up in a hurry on the merits of the 7mm RUM.
What are you going to do with this rifle? Is this for hunting? If it is are you going to be shooting long range?
Do you plan on shooting a lot? Most people who hunt, have no need of a weapon that has more than a 1500 round barrel life.
If you want to discuss the full capability of this cartridge, I suggest you log onto: longrangehunting.com and register there and ask those guys. They will tune you up in a hurry on the merits of the 7mm RUM.
#15
Typical Buck
Join Date: Jun 2005
Posts: 604
RE: 7 mm ultra mag, good gun?
uhh scott, anyone who owns a chronagraph knows if you can find a factory load thats within 200 fps of the published velocity it is an exception to the rule
kreiger barrels, though known for outstanding accuracy, are cut rifled, cut rifled barrels are slower at higher pressure than buttonrifled barrelsand kreigersare slower than most for some reason.
You may not believe it but with overbore cartridges weather its the 7mm AM or the 300 rum, the only way to increase velocity at the same pressure is to use a longer barrel.
I do not agree with the premise "the only way to increase velocity at the same pressure is to use a longer barrel". When you increase the bore diameter the same pressure is now exerted on a larger area. This will actually increase the force exerted on a bulletthe same way ahydrolic cylinder works. That is whyyou see velocity increases in equal weight bullets as the bore diameter increasedin the 30-06 family of cases from the 25 06 to the 35 Whelen.
the only difference to 500 yards between the 30-06 and the 300 rum to 500 yards is a couple clicks on the "up" knob, so why not choose 3-4 times the barrel life and lots less expense to shoot those ranges?
Hey we agree on the above I am a big 06 fan.
Hey we agree on the above I am a big 06 fan.
#16
Typical Buck
Join Date: Oct 2006
Location:
Posts: 567
RE: 7 mm ultra mag, good gun?
Tyler15, Have you shot any full load magnum's in a standard weight rifle. You might want to consider that the recoil is going to be pretty stout. I'm try to work up a light load for my 7mm rem mag right now, because until I go elk hunting someday, I don't need the extra speed, energy, or recoil for a whitetail out to 300 yds. By the way 300 yds is a long shot on a game animal. And probably should not be attempted, if you do not practice at 200, 300, 400regularly.
Ridgerunner does practice and knows his equipment and loads quite well. I have only killed one animal at 300+ yds and it was a p-dog at 316 yds with my .243. My 3 favorite deer rifles are my .243, .308, and 35 whelen, depending on where I am hunting. The furtherest deer I have ever killed was at about 200 yds and I usually hunton the ground at the edge of wheat and alfalfa fieldsthat are anywhere from 40 to 320 acres.
Not trying totalk down the ultra mags, but a standard cartridge in a .270, 7mm08, 280, 308, 30-06 isplenty ofgun to take down deer and elk at reasonable ranges.
Will your friend let you shoot it first?By the way, ammo run $40-$50 a box. Good luck in your decision.
Ridgerunner does practice and knows his equipment and loads quite well. I have only killed one animal at 300+ yds and it was a p-dog at 316 yds with my .243. My 3 favorite deer rifles are my .243, .308, and 35 whelen, depending on where I am hunting. The furtherest deer I have ever killed was at about 200 yds and I usually hunton the ground at the edge of wheat and alfalfa fieldsthat are anywhere from 40 to 320 acres.
Not trying totalk down the ultra mags, but a standard cartridge in a .270, 7mm08, 280, 308, 30-06 isplenty ofgun to take down deer and elk at reasonable ranges.
Will your friend let you shoot it first?By the way, ammo run $40-$50 a box. Good luck in your decision.
#17
Guest
Posts: n/a
RE: 7 mm ultra mag, good gun?
I have had 3 300RUM's, one with a krieger, and custom built, and have yet to get a 200gr bullet up to 3200fps. But then again, I will not quote hodgdon or federal. Only my own Chrono.
And I bet I have shot more 300RUM shots than anyone on this board, besides stubble. I burned out two barrels.
And I bet I have shot more 300RUM shots than anyone on this board, besides stubble. I burned out two barrels.
#18
Typical Buck
Join Date: Jun 2005
Posts: 604
RE: 7 mm ultra mag, good gun?
the hodgdon data is from they're web site, not a manual,
You quoted a velocity fromHodgdon earlier of 2910 for the 300 RUMso I know that you must have great faith in that publication unlike the Federal factory ammo. Only problem is the velocity listed in that manual is 3048 fps not 2910, and that is in a 24" barrel. Now I have learned a great deal from your barrel length in overbore caseslecture in the last postand it wouldseem 76FPS per inch in an overbore rifle to actually be quite reasonable would it not? Or are the Hodgdon numbers now bad since they dispel your premise.
http://www.longrangehunting.com/forums/f17/300-rum-200-gr-ab-26590/
You know I just realized. That is the actually the same bullet and load that I referenced and your "guys that know" are also referencing the same exact load with the same results!!! Your post below was in response to my reference to that load.
well claim 3200 with a 26" barreled rum all you want, hodgdon calls a max load for the rum and a 200 gr bullet at 2910 fps, so don't think it'll do 3200 without a longer barrel.
#19
Guest
Posts: n/a
RE: 7 mm ultra mag, good gun?
I got an easy way to settle this. Scott, do you have said load, with said powder, and a chronograph? Do you have a 300RUM with a 26" barrel? If not, then your sure not right either. If yes, and can prove it, then post away.
I think thier should be a rule on these pages, that if you don't have the firearm or if you have not loaded it, then don't post.
I think thier should be a rule on these pages, that if you don't have the firearm or if you have not loaded it, then don't post.
#20
Typical Buck
Join Date: Jun 2005
Posts: 604
RE: 7 mm ultra mag, good gun?
scott, those guys are shooting min. spec chambers in custom barrels at who knows what preasures
Remington Sendero Stainless w/ a 26" barrel, muzzle brake, and 3lb trigger