New 6mm Advanced Rifle Cartridge

[flogxal]

Yesterday I tested my 6.5 CM load (N150, Berger 140 Hybrid) and did 25 with Berger 140 and 5 with Hornady Aeromatch 140. Just steel at 600yds, but results were similar downrange. And maybe a fluke, but the 5 shot SD/ES on the Aeromatch was a good bit smaller. I shot them as 20 Berger, 5 Aeromatch, 5 Berger. So there were two 5 shot strings to compare sample size wise.

No charge adjustment or seating depth change, same COAL, just swapped bullets. I'll load the rest of the 100 in Aeromatch and test them this winter. And will do likewise for 6 ARC and Aeromatch.

Proof 18" SS 6 ARC shot Precision Hunter 103gr and Black 105gr well, slight nod to the 103gr.

 

[Snuby642]

Looks like I will try cfe223, it's fast but sometimes not as accurate as others.

Anyone used it with the 105 Aeromatch 6mm?

I have big jugs of
H335 #91 burn chart
Ramshot Tac #97 burn
Cfe 223 #118
And smaller supply of Varget #113
And a little Imr 8208 xbr #95

So I figure 105g is heavy for caliber, that probably cuts H335 out.

Hodgdon lever revolution #121 on the chart and cfe223 #118 are the two listed most for the 105 Aeromatch.

I used cfe to get basic one moa loads in 223, 308, and 6.5g , but it was never the best for any of the bullets but I may try other bullets of different weights as I get a small idea of burn rates.

This is in a 24 inch gasser so it will react differently than the shorter barrels but I don't know what direction.

Be nice if I find a good place for the cfe223, but I didn't get this 6mm ARC to be satisfied with one moa.

Edit: the other problem with the cfe 223 is I can probably get way more in the case than I should . I do have the type 2 Bolt.