Rebarrelling my Sako TRG... what caliber?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by exabit, Dec 19, 2011.

  1. exabit

    exabit Member

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    Hi,

    Soon 3 years with the Sako TRG-22 in 308 Win. Have been shooting mainly Norma Diamond Line 168 (coated Sierra MK's) and Scenar 155's that I have moly coated myself. Mainly practicing at the range (100, 200, and 300 meters) but also used it for shooting steel up to 600 meters. Now, the 308 is not very thrilling when it comes to long range performance. Therefor I'm thinking about rebarreling this rifle (I have a very competent gunsmith close by) in a caliber which offers long range capacity both for target shooting but also hunting.

    I will use the gun mostly at 300-600 meters but want it to perform at 1000 also. The hunting aspect basically only includes roe deer which typically never exceed 60 lbs, so I don't need any 338 Lapua or similar dragon slayer. I need something that fits in the existing TRG magazine and I don't want to open up the bolt face too much (but WSM bolt face will work fine). I do like Lapua brass so what I immediately thought of was the 260 or maybe the AI version. Another candidate is 7 WSM/SAUM but then Laupa brass is of course out of the question (but Norma brass ain't too bad either...) but I haven't checked if it would work in the magazine yet. I could also fancy the 6,5x47 Lapua with its excellent brass, as I have used that in an custom rifle a few years ago. As for bullets, I'd like to use A-Max or Bergers for everything.

    Maximum magazine length is 75 mm (2.95"). I plan on finishing the barrel at 26" with a "TRG profile" and use a brake.

    Any caliber ideas? I know there's loads of knowledge and experience on this forum, so I am really looking forward to any response that can help me in the right direction.
     
    Last edited: Dec 19, 2011
  2. liltank

    liltank Well-Known Member

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    6.5x47 Lapua will fit what you want nicely. Ammo should be readily available for you in Sweden. The 123 grain bullets and a powder in the Alliant Reloader 15 burn rate are where it's at. If you want to shoot the 140 grain bullets, then H4350 or a burn rate equivalent is what your looking for.

    Tank
     

  3. exabit

    exabit Member

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    Thanks! I handload and used 37 grains VV N150 to propel the Scenar 123's at 2870 in my old gun. It would be nice to use the heavier bullets though for downrange performance, but I should run some comparison graph for that using Excel I guess.
     
  4. CRNA

    CRNA Well-Known Member

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    My shooting buddy has a TRG22 in 260Rem, and it is a shooter for sure. I can honestly say it is the best shooting gun I have ever had the pleasure to squeeze the trigger on. The 260 shoots the 142gr SMKs very well out to 1K yards. The typical group sizes for 100yds are sub .5". I believe I would go that route if I were in your shoes.
     
  5. angus-5024

    angus-5024 Well-Known Member

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    .260 Rem would be awsome, but the 6.5X47 Lapua would be right there with it, but i would probably give the nod to the Lapua.
     
  6. exabit

    exabit Member

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    Thanks for your input guys.

    I've decided to keep shooting the 308 until I get tired of it. Just cleaned the whole thing the other day and got rid of as much as possible of the moly. Now I will enjoy shooting "naked" Scenar 155's :)