Thread: 6mm ARC - What would yours look like

I got Greg at Custom Guns to build me one on a American Ruger action running a 1in7 hardys no.5 contour 22", timmy trigger, Boyds AT-one stock with a Nightforce 5.5x22-50 NXS on top. was lucky enough at the time to get factory hornady brass once thats gone have got lapua grendel to take it's place. brass life seems good at this stage batch of 200 cycled atleast 5x each expecting 15 plus. rifle was primarily built for wallabies fallow and the likes will do some prs with it down the track once i got some more time. One of the big factors in the build was the reloading price and shootability .
I'm not by any means trying to push them hard running hornardy 105 hpbt at 2580fps using cheapest powder available W748 at 27gr a drop. defiantly can get more speed but more then happy with it's accuracy and killing power.
So far in the field have taken down a number of Fellow deer, Goats, Wallabies, Arapawa sheep and Pigs. have one shot killed a fellow at 380 and a pig at 340
so all in all the round itself is great fun too shoot highly recommend it. simple terms it's a 223 on steroids

your going to love it as a fellow goat gun they just chew them up only down side is finding your precious brass in the grass

Based on NZMeathunter's recommendations I've build this wee fella for a NI hunter.

So by all accounts these builds are hot on the heels of a fast twist 243?

Anyone considered doing an M7 6ARC build? Nice handy action with a 2.8" magbox to take advantage of, although I'd wager the internal box and follower might need tweaking for reliable feeding...

Not even close to a fast twist 243. where they win over a 243 is recoil, run less powder and can be run in a mini action. longer mags you could push a bit more out of the case but you wont see 3k

6x45 or even better 6mmTCU with fast twist barrel I think is a better thing, almost the same performance and no worries looking for your precious brass in the grass, Never hard to find 223 brass

Speaking as a longtime 6.5TCU user
Had mine out for first time in nearly 2 years after finding some 107TMKs, 5 shots on a 4 inch plate at 535 with the first "test load" with new projectiles !! but knda wish I had got a 6TCU as well

Originally Posted by mikee

6x45 or even better 6mmTCU with fast twist barrel I think is a better thing, almost the same performance and no worries looking for your precious brass in the grass, Never hard to find 223 brass

Speaking as a longtime 6.5TCU user
Had mine out for first time in nearly 2 years after finding some 107TMKs, 5 shots on a 4 inch plate at 535 with the first "test load" with new projectiles !! but knda wish I had got a 6TCU as well

The arc's main advantage over these is shorter case length, so better suited to run a variety of pills in the mini action. Same thing with 260 vs creed.

It looks very interesting and on a mini action (L461/Mini Mauser/Howa Mini) could be a nice little rifle for a lot of my hunting, especially with Hornady offering factory ammo options like the 103gr ELX Precision Hunter loading - Anyone using one ?? Any comments/thoughts/plus/Minus?

Posted on the shooting forum too

I'm pretty pleased the way mine is going, Jaco built it using a Criterion 1:7.5 twist barrel, on a Savage action. It just got a Leupy 3.5-10×42 CDS as a means of minimizing weight. It has a very fugly Atlas AICS dbm and I run a flush fitting 308 magazine for carrying and 8 shot Valkyrie mags for more capacity. 3.5
kgs with supressor.

It's my current "out the door rifle" meaning it's first on the rack for all but specialist duties. Just plain shoots and the very low recoil makes it easy to see trace and impact.

Tonight's results at the range (was on RO duties so not much time). I wanted to test this load, which is right at max,(don't copy it without a very careful work up, you have been warned) in hot conditions, but it was fine at the 25 degrees we had here at 6.00 pm.



I shot a Fallow at 260M a couple of weekends ago, bullet passed right through leaving a big splash of blood and lungon the ground behind it (it was lying down) , and a blood trail. I'd be confident of going to 350M on just about anything with this rifle.