I'm sure some of you have watched it. There were a lot of comments theorizing what happened with the 6 ARC load and why the belting. I'm pretty sure to much of the wrong powder was mostly to blame. But a lot of people were wondering about case differences including me since I've gotten a little belting on my Laupa brass. So I hacked a few open. Left to right Lapua grendel, Starline grendel and Hornady 6 ARC
7 rsaum on an ar10 platform it was originally supposed to be a 300 wsm or rsaum but lack of components killed that rather quickly
mcgowen is doing the barrel for me somewere in the 28-30" range, +3 gas system, with a fast for caliber twist rate for launching the long n heavy high bc projectiles , going to build this on a billet upper and lower set with a kak high pressure magnum face bolt
things should get interesting with this one
as usual im sure ill be tempted to take this thing varmint/predator hunting as well atleast once as i fully expect this rifle to come in around 30+ pounds
the original goal was to build a full magnum sized ar10 but no one will sell u just the receiver sets anymore , instead they now wanna sell u a whole very high priced rifle so this is the next best thing i could come up with
Long time shooter and reloader from WV. Just completed a simple ARC build on the AR platform. Looks like a bolt action will be the next project in an ARC.
I just bought a couple of boxes of Berger 105 VLD Target and 105 Boat Tail Target. It looks like the dimensions are great with the Boat Tail and perfect with the VLD in my barrel. The VLD's seem like they were made for the 6 ARC.
Measurements with Hornady modified case to the lands
105 VLD Target CBTO 1.690" OAL 2.269"
105 Boat Tail Target CBTO 1.720" OAL 2.239"
The boat tail is the only part below the shoulder and neck junction for the most part with either bullet. I can't wait to load a few of these up and try them. Hopefully my barrel likes them.
Picked up the Axis from my FFL yesterday and swapped out the stock for the Boyd's thumbhole. Mounted the EGW rail, Monstrum rings and the Athlon Argos 6-24 X 30 scope and will break in the barrel this weekend. Will order in a set of RCBS Matchmaster dies here shortly. Have some Berger 95-grain VLDs to play with first.
With deer hunting season starting up shortly round my way I thought I finally develop a load with some heavier projectiles which I have managed to avoid so far LOL.
Not many choices at my local gun shops so I grabbed a box of Hornady 103gr ELD-X. I have LVR and CFE223 on hand so I chose the best speedy powder and knocked out 8 different charge weights.
Seating depth I just went off a gut feeling after looking at the recommended COL on the Hornady website. As this is to be a hunting load I shot off a Harris bipod.
Howa Mini 6mm ARC (ex Grendel), Bartlein 1:8 22inch, Sightron Stac 4-16, Howa Kryteck stock, harris bipod.
Hornady 6mm ARC brass 1.485, Rem 7.5, 103gr ELD-X, LEVERevolution, 2.220 COL
Charge Velocity Average
29.4 2758 2780 2746 2761
29.6 2789 2790 2791 2790
29.8 2807 2807 2807 2807 best Group
30.0 2815 2828 2822 2821 2nd
30.2 2839 2841 2842 2441
30.4 2863 2839 2852 2851
30.6 2856 2876 2864 2865
30.8 2882 2868 2860 2870 Max load according to Hornady
As you can see the 103gr ELD-X LVR combo is a very good one, and yes the Magneto speed recorded 3 exactly the same speeds for the 29.8gr load, as you can see 29.6 and 30.2 were also ridiculously similar. I kind wished I used the proper rest they had at the range but I wanted to use the bipod.
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