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308 VS 300Rum
bill2740
Member Posts: 886 ✭✭✭✭
I am looking at a DPMS LR300 (AR10 type). Does the 300Rum have a big advantage over the 308 Win.?
Comments
308 ammo is inexpensive, recoil is mild, 308 ammo can be found in every backwoods store, under 300yd the 308 will take down just about anything in NA (500 if you know what your doing), 308 is accurate enough to punch paper at 1000yd.
All the above are also true of the 30-06.
The advantages to the RUM are hunting "thump" at ranges over 500yd, reduced drift at long range (you still have to compensate, just not as much) and making up for a undersized "winkie". 90% of the rum users do so for the last reason. Under 300yd the RUM is a waste of good gunpowder.
BTW, I'm building a RUM, but with a projected weight of 18# and a 30" #8 barrel you know it isn't going to be a "brush gun".
LMAO! So that's been the problem this last year. I never would own a "magnum" until just last year.
The 300 RUM has a LOT! more poop than does a .308. and like tailgunner said most of it is unnecessary and it's a huge waste of powder. It will show it's advantage at 600 yds and beyond. So, if you don't plan on shooting anything but long range a 300 RUM is for you. Also, like TG said you can find .308 everywhere you go, any .308 will run through the rifle you mentioned with little problems. If you are looking to only go out to 1000 yds. the .308 will do.
Also, you really need to feel the recoil of the RUM before going that route. Something tells me that is going to be hard on the gas system as well as the bolt and recoil system. She had better be heavy and have a break if you think you are going to make a follow up shot.
I would like you to tell us your uses that you have in mind which can have a lot of bearing on the choice.
I had to get my head screwed on right and read the question correctly since I was a little off course the first time I read it.
The DPMS LR-300 is an AR-10 platform stepped up to take the .300 RSAUM or the Remington Short Action Ultra Mag, not the RUM. I know this has been pointed out above.
The DPMS LR-308 is chambered for the .308 Win.
The only problem that I run into when dealing with some of these manufacturers is that no matter what selections or upgrades they offer, they never have the configurations that I think are correct. I guess that puts me outside their marketing bubble...
There are a couple of advantages and disadvatages to these rifles:
- Ballistically, with a 20" barrel and loaded to similar pressures, the 300 RSAUM has about a 200 FPS lead over the .308 Win. chamber. The ideal here would be that the RSAUM should have a slightly longer barrel (24") to gain the most from the cartridge but the decisions are usually based on the shorter barrels being more field expedient.
- The +200 FPS for the LR-300 yields an additional 400 Ft/Lbs of energy when compared to the .308 Win. loaded similarly.
- Major disadvantage is that the LR-300 magazine only hold 4 cartridges.
I do NOT like the 'skeletonized' buttstock design at all. Everything in the outdoors catches on it. I also don't care for the multi-position buttstocks either.
Since I'm not a pseudo-militia type person, I'd buy the LR-300 and put a wood thumbhole buttstock on it followed by a 24" barrel and super high quality glass. Then I'd have to work on the right type of magazines that would offer the ability to get at least 8 shots (preferably 10) in those magazines. The goofy part of this is that I can do all of this with bolt action rifles that I already own except for the semi-auto function which is usually superfluous to me. But I do understand the draw of their concepts.
I like the LR-308 in standard dress and it performs just fine as far as I'm concerned.
Here's a comparison for you to read:
http://www.gunblast.com/DPMS-AR10Carbine.htm
Best.