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1st Post......Building a 1000yrd RUM???

 
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  #1  
Old 04-22-2011, 12:45 AM
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Join Date: Apr 2011
Location: Pacific City, Oregon
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1st Post......Building a 1000yrd RUM???

Just aquired a Winchester 7mm STW which I dropped off at my gunsmiths today and is waiting for my go ahead on the 300UM conversion. This is my first MAG build so any advice would be appriciated. Looking to build a reliable shooter capeable of 1000yrds or more. I'd consider myself capealbe of making the shot and not affraid to spend a little money to better a stock set up, so here's my plan:

Medium heavy #5 Lilja SS fluted barrel, undecided final length (26.5?)
Holland straight brake turned to same diameter of barrel if possible
Work the stock Winchester trigger to around 2.5lbs or go custom (Jewell?)
Keep wood stock (strip/refinish) full glass bed

I want this to be my favorite hunting rifle and will be packed with minimal bench shooting. Not overly concerned about weight savings but worth considering as it will be packed. Trying to keep this build under controll which is very difficult for me, so please don't tempt me with bling that is unnecessary.
Thanks............CRAB
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Old 04-22-2011, 06:22 AM
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Re: 1st Post......Building a 1000yrd RUM???

First question that is going to arise is what do you plan on hunting at those distances? Also you will need to put quality glass on top of it. Don't skimp on the scope. I personaly would go with a 28-30 barrel. Leaning towards the 30". Trigger and stock are things you can upgrade as you go. Here are the 3 calibers I would consider in order. 338 Rum or Edge, 7mm STW or Rum, then the 300 RUM. Here are some ballistics to think about with 10 mph wind

338 - 300SMK 2850 fps at 1000yd 1778fps 2107KE 24.8MOA and 4.72MOA

7mm - 180VLD 3000fps at a 1000yd 1738fps 1207KE 23.6MOA and 5.31MOA

300 - 210VLD 3000fps at a 1000yd 1665fps 1293KE 24.5MOA and 5.8MOA
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Old 04-22-2011, 07:15 AM
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Join Date: Nov 2008
Location: Central Pennsylvania
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Re: 1st Post......Building a 1000yrd RUM???

For a stock, my suggestion would be to look in to an aftermarket composite stock of some type. Wood is okay, but if you want to be serious about long range you should really have as solid a platform as you can. Laminate stock would be better than a normal wood stock especially if you put steel pillars in with Devcon bedding.

As far as bullets, the 300RUM is far more capable than just using the 210grn bullets. With a break you can jump up to the new Hornady 225, and use the Sierra 240grn bullet. These will far out perform any of the 210's. I do know that guys are pushing the 208 a-max and 210's to 3100 and up to 3200fps with the RUM. It is a very capable cartridge. I do agree that glass should be on the top of your list of things to buy.

28" would be the shortest I would go for the RUM. It has a large powder column and it wouldn't hurt to have enough tube to burn all that slow powder you will use. Just some thoughts.

Tank
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If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

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Last edited by liltank; 04-22-2011 at 07:24 AM.
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Old 04-22-2011, 07:26 AM
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Re: 1st Post......Building a 1000yrd RUM???

Just looked on reloadersnest.com at some RUM loads for the 240grn bullet. A guy used H1000 in verying weights getting from 2630 up 2983fps. With a .7something BC, this bullet is going to rock anythings world with authority. The added benefit of shooting heavy bullets will be better barrel life. Have fun!

Tank
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Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
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Old 04-22-2011, 09:34 AM
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Join Date: Apr 2011
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Posts: 22
Re: 1st Post......Building a 1000yrd RUM???

Thanks guys. This rifle will be mainly for deer and elk with the occasional varmint. I have a fairly modified 220swift for the little guys that I'm pretty partial to. I have and will be using a Leupold V3LR 6.5-20X50 w/30mm tube with varmint reticle (windage and elevation with side focus).
There won't be much wood left when he's done with the stock, more for looks then anything. I should go all glass now, but I want to play a little.
The barrel is my big question. My gun smith likes the Lilja which I'm totally impartial. Just want a good shooter. Length is the other big ??
As you guys know, it's near impossible to choose a caliber these days. I have spend a lot of time going over the ballistics and shooting most of them. Yesterday, I nearly purchased a Weatherby 340mag and a Seiko 338 Lapua, drooling over both for several hours. I left my 7mm STW sitting on the bench in pieces and told my smith to let me sleep on it (Now you got me thinking about that Lapua again)
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Old 04-22-2011, 10:11 AM
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Re: 1st Post......Building a 1000yrd RUM???

Quote:
Originally Posted by Crab View Post
I left my 7mm STW sitting on the bench in pieces and told my smith to let me sleep on it (Now you got me thinking about that Lapua again)
Yeah, I had a few restless nights deciding what I wanted to do. Lilja is great barrel maker, so no complaints from me on that. I would suggest the 3 grove 1:9 so you can really make the big boys sing if you choose to shoot them. Sierra suggests using the 1:9 twist for their 240grn bullet. If not, then 1:10 will work for every thing in the 30 caliber range. This caliber will do everything the Lapua can do to certain distance if you shoot the big heavy 30's. If not then they are not on equal ground when it comes to factory ammo. The Lapua will out run the 300 because manufacturers offer good ammo for that caliber. However it will cost you a bunch a money, so reloading is definitely the way to go when it comes to either caliber.

My cousin owns a Lapua. It's fun to shoot. It has proven accurate, but have not had a chance to really shoot anything with it yet.

Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
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  #7  
Old 04-22-2011, 10:22 AM
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Join Date: Apr 2011
Location: Pacific City, Oregon
Posts: 22
Re: 1st Post......Building a 1000yrd RUM???

Thanks liltank,
I believe the 3 groove 1:9 is on my order sheet at the gunsmith. What about barrel length? I must have been mistaken when he was talking about a 26.5". My buddy's 300RUM is right at 30" with the 2" brake. I want to go with the Holland which is 1.25". I'd like to keep it as short as possible but get the max range out of the #5 barrel. I'd be willing to go to a heavier barrel if it would accomplish anything.
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