My everything rifle build, Tikka 375 ruger all weather

someguy2800

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Sep 16, 2015
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Minnesota
I thought I would show my build progress on my Tikka that I've been working on for the last couple weeks.

Firstly I want to start off by saying that I am well aware that my shop is filthy and I am working with the bubba-ist tools imaginable. I've been working as an engine builder, machinist and engineer for 15 years and this is just how I roll. I like to push the boundaries of what I can do with basic tools and sometimes that works out and sometimes it doesn't but this is for my own entertainment and education only. So yes I am well aware that there are tools that I could have purchased to do this, but I didn't want too. Hopefully this inspires some people that you can accomplish this kind of stuff in your shop if you know what you're doing.

So the idea for this project is that I wanted to build my own "everything rifle". That being a hunting rifle suitable for all species of game. This is actually my 3rd iteration of this idea. The first was a 338 win mag ruger Mk2, but I couldn't quite warm up to that rifle. Next was a 338 win mag Tikka T3 stainless, but in the back of my mind what I really wanted a 375 ruger. I contemplated re-barreling the 338 Tikka but the ejection port was actually too small to eject 375 ruger brass so I sold that and decided to build from scratch. I started by buying a brand new Tikka T3x lite stainless in 300 win mag to be the action donor. The larger ejection port on the T3x is large enough for 375 ruger.

I also wanted it to be relatively light weight and compact and completely weatherproof with a fiberglass stock so got a Bell and Carlson sporter. My target weight was 8.5-9 lbs scoped. I wanted a scope that would be at home for both short range hunting and still capable of shooting out to 500 or 600 yards if I feel like it. I picked a Burris Veracity 2-10x42 SFP scope in a set of Sportsmatch billet rings I choose that scope because it has an excellent field of view on 2x and it is one of the only 2-10 scopes I could find with adjustable parallax which I insist on having. Also Burris has their custom turret program so you can order a BDC calibrated elevation turret for your load, which I plan to take advantage of. That is a much larger and heavier scope than I would typically use on a hunting rifle but I figured since I had plenty of margin to stay in my weight target that I would opt for a heavier scope rather than adding weight to the stock or barrel. With the components worked out I did some measuring on the factory barrel and the Bell and Carlson stock channel and designed a barrel profile to match my weight target in solidworks and sent that off to McGowen Precision to get a short chambered barrel made with my custom profile. I went with a 1:12 twist and 21" total length

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The barrel took about 2 months to get and then went about removing the original barrel which proved to be very difficult. I did not know this but tikka uses some sort of thread locker on their barrels which takes a ton of torque to remove, even with heat. My first attempt was with some plastic barrel blocks I 3d printed in the vise and a big adjustable wrench on the action flats with strips of aluminum to keep from scratching the action. I've used this technique on a couple other rifles but could not get enough friction with different liners in the barrel blocks to keep it from spinning.

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I could tell that this just wasn't going to work so I changed tactics and tig welded a 3/4" nut on the end of the barrel and put the action in the vice instead. I will latter cut this barrel back to like 18" and thread it in my lathe so no I did not ruin a good barrel.

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I ended up with about 3 feet of cheater pipe on a breaker bar and I still couldn't get the barrel to break free without flipping my bench over. It actually ended up springing my vise open and nearly spinning the action in the vise jaws. (note: I forgot to take pictures at the time so I recreated what happened)

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I was turning so hard on it that the action nearly cut the aluminum soft jaws in half.

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Sadly my 50(?) year old vise did not survive the event. Luckely though I caught it before doing any damage to the action.

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I was just about to chuck it in the lathe and cut the barrel off but I gave it one last go after replacing my poor old vise and bolting my bench to the wall. I was finally able to get it to break free with some heat. I screwed in the new barrel and found I only needed to take off about .010" off the shoulder to set the head space, but this left the roll mark on the barrel pointing up at about 1 o-clock, so I had to take off a little more from the shoulder to get the roll mark at 10 o-clock where it should be.

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Now as expected the chamber was too short so I did have to rent a chamber reamer to finish it off. While waiting for the reamer I torqued the barrel to 60ish ft lbs and found that there was enough crush that now the bolt was hitting the rear face of the barrel and the bolt would no longer close, so I removed the barrel again and took .010" off the rear face reamed the chamber.

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Just as I do when I set up a savage barrel, I did not use headspace gauges to set the headspace. I had bought some once fired brass off gunbroker so I resized them in my dies and then set the headspace off my sized brass since this gun will never fire factory ammo. On target rifles I like to set them so a piece of sized brass closes with some resistance but being this is a hunting rifle I set it so that it closes easily on a sized case, will still close with some force with a .002" shim on the base of the brass, and will not close with a .004" shim. This is pretty tight for a hunting rifle but if it ever proves to be an issue I can always ream it a little deeper.

After I was happy with everything I wire wheeled the bead blasted finish off the barrel and polished the whole barreled action with green scotch brite, and then gave it a bath in white vinagar to dull the finish to a satin grey. The stock did take a good bit of sanding in the forend to float the barrel, but the rest of the action fit perfectly with no inletting.

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The final weight for the bare rifle is just over 7 lbs and with scope and rings is about 8-5/8 lbs, so right on target. I have the first test loads loaded up already. Hopefully I will get time this afternoon to get it sighted in. Very happy with the end result so far.
 
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Is that a miss print on the barrel?

you’re right, it is, I didn’t even notice.


I got out to shoot the first 10 rounds this afternoon with 270 grain Speer’s. First 5 rounds were loaded with 80 grains of H4350. The first round low left was at 25 yards to get on paper. 2nd shot low right was at 50 yards after first scope correction and then three shots after 2nd scope correction.

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Next 5 rounds were 80 grains of AA4350. Still at 50 yards. I forgot my boots and didn’t want to trudge through the snow to 100 yards in my tennis shoes. 5 rounds in probably a little over a 1 moa string. Promising start.

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I'm impressed! I confess I am jealous of the machining skills. Thus far, the most ambitious I've gotten is building with a barrel nut.

Cool rifle, too. I don't shoot my .375 Ruger as often as I'd like, but have concluded it is indeed a very versatile (if not extremely efficient) cartridge.

Sometime in the next few weeks I need to remove the barrel from the Remington 700 in 7mm Rem Mag I picked up as a donor for a 7mm PRC build. McGowen barrel is on order.
 
Sorry about your vise dude!

I've not handled the Tikka action to date -- what are those holes on the top of the receiver for?

It lived a good life. It was about time to upgrade anyway because the threads were nearly worn out. It took like 1.5 turns of the handle to change direction.

the smaller holes are threaded for scope bases. The larger hole in the front is for a recoil lug in the bottom of the factory scope rings.
 
I was chewing on the mismarked caliber over supper and decided that since I don’t want to turn the barrel down any further and since I haven’t returned my rental reamer the only sensible thing to do is to take it back apart and set the barrel back so the engraving is at the bottom and then they can re-engrave it above the stock line. I already set the shoulder and rear face back .015” and reamed the chamber to set the headspace again. Thanks for pointing it out @wild willy, I probably wouldn’t have noticed till 9 months from now

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I was chewing on the mismarked caliber over supper and decided that since I don’t want to turn the barrel down any further and since I haven’t returned my rental reamer the only sensible thing to do is to take it back apart and set the barrel back so the engraving is at the bottom and then they can re-engrave it above the stock line. I already set the shoulder and rear face back .015” and reamed the chamber to set the headspace again. Thanks for pointing it out @wild willy, I probably wouldn’t have noticed till 9 months from now

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Oh that's smart if you don't mind the extra work! I'd hope they'd obscure the mismarked stamping, just to prevent confusion in the future.
 
looks really bloody slick!.....even with the wrong engraving.
I managed to screw up the punches on my buddies .300, so flat spoted the area and re-did it. If i was more confident in my file work, i think id flat spot all of my caliber markings, i really liked the way it looked.....
Anyway, .375 Ruger and 7mm PRC are probably the only chamberings id REALLY be interested in a T3X for.....might need to do one just to say I did lol.
 
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They should just cross out the 357 and etch 375 above it. Then engrave a funny comment next to it, something like:

"'Precision' in our name is for craftsmanship not spelling. Sincerely, McGowen master gunsmiths"

Steer into it and make it extra one-of-a-kind.
"Precision....not accuracy" or something to that effect lol.
 
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Got out to shoot again this afternoon. First 5 rounds loaded with H4350. I shot one round at 50 to re-zero after setting the barrel back and cleaning. The sighter was the low left hole at 50 yards and the other 4 touching were at 100 yards. This was 82 grains of H4350. I also brought out my chrono and it averaged 2711 fps with a 9 fps extreme spread

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Next 5 shots at 100 was 82 grains of AA4350 which gave 2630 fps but a disappointing extreme spread of 55 fps. I’m going to focus on H4350 and do a ladder load from like 81-83 grains. And then probably work on a reduced recoil load for minnesota whitetail at like 2400 fps

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I dont remember the charge weight by imr4895 under those 270s gave about 2650fps, and was pleasant to shoot. Performance on game was very good.
I use 84gr of Rl-17 for 2850ish, and its a tad fast for those 270s.

I had somewhere in the 2700-2800 fps range in mind for performance but I’m much more concerned with finding a load that shoots the same POA at -20 deg f as it does at 80. That’s a bigger problem than velocity up north. I take it they don’t hold together too well at 2800+?


@someguy2800 Nice rifle!

It looks like you are out with the "cows and the rocks." ;) I like it.

I’m a little north of cows and rocks. About where it turns into pine cones and beavers
 
I had somewhere in the 2700-2800 fps range in mind for performance but I’m much more concerned with finding a load that shoots the same POA at -20 deg f as it does at 80. That’s a bigger problem than velocity up north. I take it they don’t hold together too well at 2800+?




I’m a little north of cows and rocks. About where it turns into pine cones and beavers
They still penetrate far enough to be lethal on soft skin game. I shot an axis buck butt cheek to chest. Itll go clean thru pigs sheep and goats no problem. Makes a huge mess tho.
2700 is where i got the best combination of rapid expansion and not blowing the crap out of things.
 
I’m impressed that those rings keep that scope in place on just dovetails considering the recoil the .375 can produce when pushed with 300 grain projectiles.
 
In another post you said:

"...for my typical hunting which is deer at under 100 yards and often within bow range due to the terrain, I would much rather use my 358 yeti and 444 marlin."

Why the over-kill? Bullet manufacturers design bullets that cut through a lot of meat before opening up when coming-up with heavy-game bullets. Many will sail through a white-tailed deer, even a mule deer, and not expand. Whoosh! ... and gone. If using a very powerful rifle and the bullet hits the bones of the near shoulder, sometimes the other shoulder and meat are blown away. This happened to a friend of mine while hunting white tail deer -- bunch of lost meat. I'll not describe the gory details.

The .375 Ruger is for hunting heavy game and dangerous game. Are you going to load-down your .375 cartridges? Have you found bullets for this cartridge that will open-up more quickly / haven't a thick jacket?

Walter D.M. Bell, the noted elephant hunter, used his 7mm Mauser / .275 Rigby to take elephants (during the Ivory Trade days, he killed over 1,000 elephants).

https://www.chuckhawks.com/bell_elephants.htm

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".303 British"

by Christopher
(Alberta)
https://www.all-about-moose.com/303-british.html

"Out to lunch on your .30-30 as a moose killer north of the 49th! By far the Lee-Enfield No.4 in varied marks has killed more moose, deer and probably black bear than any other caliber rifle - probably all other calibers put together."

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"The best cartridges and bullets for toppling big moose"

https://www.outdoorcanada.ca/moosemunitions/

"Over the years, it’s safe to say that the .30-30, .303, .308 and .30-06 have accounted for the vast majority of downed moose, and they continue to be popular choices. They’re all middle-of-the-road calibres that, when pushing quality bullets at modest velocities, are more than adequate under most circumstances. Other effective calibres in the same class include the .270s (above), the .280 and the 7mm.

"For those who can handle more recoil, and are capable of accurately shooting larger cartridges at distances beyond 200 yards, a better selection would be the .300 magnum family. These cartridges offer the benefit of added horsepower if your only opportunity presents itself at extended ranges, or an animal offers only a quartering shot."
.......................
 
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