BluntForceTrauma Wrote:I'm thinking of starting on the short end: MONSTER 12 and MONSTER 16 in 6mmARC. My button on order has a 1:7 twist to stabilize up to 110gr 6mm at short barrel velocities at 0° and 0 ft. altitude. SAAMI is 1:7.5 so it's not THAT different, but just enough to be ideal for short 6mmARC barrels.
Now you're talking, I'm all in for one of those 12" pipes.
"Wild flower, growin' thru the cracks in the street" - Problem Child by Little Big Town
Thinking about the 6mmARC inspired me to again pester Berger for a new generation of 6.5mm 120 bullets. See attached, which I posted on Berger's Twitter feed. (Why should 6mm get all the love? )
Using one of Berger's existing hybrid ogive bullet noses this 120gr should have a ballistic coefficient (BC) of about 0.595 at about 2500 fps.
:: 6.5 GRENDEL Deer and Targets :: 6mmARC Targets and Varmints and Deer :: 22 ARC Varmints and Targets
BluntForceTrauma Wrote:Thinking about the 6mmARC inspired me to again pester Berger for a new generation of 6.5mm 120 bullets. See attached, which I posted on Berger's Twitter feed. (Why should 6mm get all the love? )
Using one of Berger's existing hybrid ogive bullet noses this 120gr should have a ballistic coefficient (BC) of about 0.595 at about 2500 fps.
I like it.
On a side note my 6mm ARC barrel should ship tommorw.
BluntForceTrauma Wrote:Designed perfectly for today's long-range shooting from an AR platform.
Dimensionally-correct illustration attached showing 6mmARC at COL of 2.260 loaded with a Berger 6mm 105gr Hybrid Target bullet (G1 BC 0.536).
The Hornady 105 BTHP has an advertised G1 of .530 and you can find them readily for .20 a piece! Or, almost -40% less than the Bergers. Not knocking the Bergers, just saying theres a comparable, cheap, plinking alternative already available too.
No pic but the billet is .02 inches smaller diameter and .
Case body .03 inches shorter, along the same lines the case overall length is .03 shorter. Basically at a glance it will be hard to desguish one from the other
So here I sit with two 6mm AR's -- 1 that is printing 3/8" groups with a 107 grain SMK @ 2760 fps and the other is getting interesting. Should I care about another new cartridge?
Herzo Wrote:So here I sit with two 6mm AR's -- 1 that is printing 3/8" groups with a 107 grain SMK @ 2760 fps and the other is getting interesting. Should I care about another new cartridge?
No.
Why spend more money too add complication to the loading bench to achieve what you already have.
I thought I would have my 6mm ARC barrel by now but guess things happen, so looks like I will have to find anouther barrel supplier to source a testing barrel from.
