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300 Rum Vs. 338 Lapua

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Unread 12-27-2005, 12:36 AM
Junior Member
Join Date: Nov 2005
Location: az,chandler, USA
Posts: 5
300 Rum Vs. 338 Lapua

I was wondering when it comes to very log distance aplications how does the 300 remington ultra mag hold up to the 338 lapua. Everything i have read says the 338 is the best for long distance, but when the 300rum is close to the powder size of a 338, why cant it goe as far, they said the 338 is much better for long range aplications than the 300 win mag, but the 300 rum has 20% more powder so shouldent that help, i was just woundering why i dont hear more about the 300 rum, and if it could be used effectivly and acurately past 1000 yds like the 338, thanks
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Unread 12-27-2005, 12:52 AM
Platinum Member
Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,830
Re: 300 Rum Vs. 338 Lapua

Yes the 300 RUM can be VERY effective past 1000 yards. Its up to your personal preferance. If using the highest quality brass is most important to you along with a bigger than 308 cal bullet, then the 338 LM is for you. If flatter trajectory is important, go with the 300 RUM.

You cant go wrong with either. They are both awesome 1000+ yard performers.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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Unread 12-27-2005, 05:12 PM
Bronze Member
Join Date: Sep 2005
Location: Idaho
Posts: 51
Re: 300 Rum Vs. 338 Lapua

I am leaning towards a 338/300 RUM.

Same case capacity as the 338 LM
Slightly greater margin of safety on the chamber wall thickness (338 LM chamber wall thickness in a Rem/Sav action is getting pretty dang thin)
Less bolt face thrust than the 338 LM case
No bolt mods needed (uses std. magnum bolt face)

Of course, you can't buy factory ammo for it...which is the only drawback that I can see, but I don't shoot factory ammo except in my rimfires.
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Unread 12-30-2005, 08:43 PM
Silver Member
Join Date: Mar 2002
Location: McNeal, AZ
Posts: 368
Re: 300 Rum Vs. 338 Lapua

Are Remington and Federal still the only companies who make 300 RUM Brass?
If I can kill that coyote from here, Will you walk out to get him?
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Unread 12-30-2005, 09:09 PM
Posts: n/a
Re: 300 Rum Vs. 338 Lapua

Those are the only two that I know of.
It would be nice if Lapua made 300 RUM brass but then it would probably be more than a $1.00 a piece, but it would be worth it to get more than 5 firings before the primer pockets open up.
Wayne aka WAMBO
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