I was thinking about building a custom rifle. I like that Ti X Long Action Magnum from Defiance. I was thinking that action, Carbon Six Barrel and putting it in a MDT Hunter 26 Stock. I was thinking of 300 PRC. Well then I went to the range and pulled out my Christensen Ridgeline in 300 RUM. I was there shooting something else but I decided to put a few down range with it. Well 3 rounds at 100 yards . I like the rifle just not in love with the stock. I cannot see spending 1800 on a MDT stock for it but hell it shoots money with most loads. That is 212 ELDX at 2900 FPS. Should I just leave well enough alone. If I built a custom I would be happy with groups like that.
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I've been down this road a few times. Put together a couple 300wm and a 28nos in hnt26 chassis. They are just too much recoil for that system IMO. I was never as happy with the shootability or groups as I'd have liked. On the other hand, my custom and semi-custom 6mmCM and 6.5cm rifles with hnt26 stocks are tack drivers and have taken a variety of game animals including bear, deer, and elk. Including my 70 year old neighbor who just took his (probably last) 6point bull elk with one of my rifles at 455 yards (one shot) last week.
That being said... I like my MacBros action, and LRI does good work. (My 6mmCM only weighs just an ounce or two over 6.5lbs... including NXS scope, Ultra7 suppressor, folding stock, and mag... and it's a joy to carry and shoot)
If you need a 30 cal, a 300wsm might be a good option to consider...
When considering a lightweight mountain rifle... I like short barrels, short actions, folding stocks, compact suppressors, stainless steel and cerakote, bulletproof scopes (dialing), dope charts out to 600 yards... and tape over my muzzle.
As a side note, before spending a couple
grand on chassis and custom rifles... I'd suggest putting a few more rounds on paper before I made any decisions.
Here is a good process to help see the true capabilities of the rifle.
I'd shoot a group of 10 in one sitting to see what the spread looks like.
Then shoot 4 separate groups of 3 rounds at the same target from the same shooting position (mark each one between shoots) to see where the overall pattern is. (Let the barrel fully cool between each 3 round group)
Then do the same 4 separate groups of 3, but do it from a different shooting position each time (try one with your preferred hunting bipod prone, one off a backpack prone, one off of sticks sitting, one nestled between solid sand bags off the bench.
That would be a total of 34 rounds down range by that point. Overlay all three targets to see what the overall group looks like. See if you notice any patterns. Best if you can record velocity and temp data as you do all this.