What would a 6.5mm Ultra Mag do?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Tyler Kemp, Jun 30, 2008.

  1. Tyler Kemp

    Tyler Kemp SPONSOR

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    Just wondering, I'm trying out for the Missouri Junior High-Power team pretty soon. If I had a 260 Rem built, then had another 6.5mm cartridge that was faster for long range hunting so I could use the same bullets. What could I achieve with the 140 grain bullets, or maybe the 169 grain Wildcats?
     
  2. woods

    woods Well-Known Member

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    Hey Tyler

    The 6.5 REMINGTON mag will do 3000 fps easy with the 140 gr bullets. I have had it up to 3100 fps with no pressure signs but 3000 fps gave better accuracy. That is in a 26" barrel.

    I am not familiar with the 6.5 ULTRA mag but if it's like the 264 win mag then you will get a lot more bang for not much gain. Too overbore.

    JMHO
     

  3. Long Time Long Ranger

    Long Time Long Ranger Well-Known Member

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    Through the years I have necked all kind of cases to 6.5 with the largest being the 8mm rem mag and the 300 wby. With those two you have a very short window of premium accuracy. I have necked the ultramag to everything from 7mm on up. The 7mm was a big mistake. Not worth a dang. I did three of them with 31" match barrels for long range with heavy bullets. Barrel life with premium accuracy was extremely limited. Of all the 6.5's I have done the best combination of performance and barrel life was with the 6.5/06 imp. 6.5 gibbs, and the 6.5/284 but on a long action because of seating that long 140 grain bullet. These are a pleasure to shoot, have good barrel life and you can easily take out a deer at half a mile with them. I have a 264 winchester that shoots lights out but again probably not for long. The 6.5 gibbs will shoot right with the 264 winny with less powder.
     
  4. Tyler Kemp

    Tyler Kemp SPONSOR

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    Looks like 338 Edge is still the way to go.
     
  5. woods

    woods Well-Known Member

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    Just how did you go from thinking about a 6.5's to a 338 Edge? Porsches and 1 ton trucks.
     
  6. Tyler Kemp

    Tyler Kemp SPONSOR

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    Well I've been wanted a 338 Edge, but then I saw that 260 Rogue in the classifieds. If I got that for high power shooting, I could just get another barrel for a different cartridge/same caliber. Maybe use the same bullets, primers, everything except cases and bolt head.
     
  7. robbor

    robbor Well-Known Member

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    RUM

    I kicked around a 257/6.5 rum and ended up buying a 300 rum as the donor rifle and liked it enough i never switched. Im not happy with the brass though, if i didnt have $200 in dies and another $150 in brass i would gladly switch to a 300-338 Lapua.