Kosh65 Wrote:Thanks for the input thus far. All good info. Im in no hurry to do this potential project until Ive considered all avenues.
I just feel that the 6arc is the wave of the future (so to speak) with so much more components and load data to follow. I definitely dont want to go the way of a wildcat cartridge and all the fire forming case prep. Been there, done that.
SD; I am considering a slower twist rate. Maybe a 1:8 or even as slow as 1:9?
I used to shoot a .243AI with a 1:10 twist Krieger and it shot everything from 58gr. to a 105gr. really good. If I want to go heavier than that, I will choose to shoot my Grendel.
Thus far a bit of fire forming has been involved for me with the 6mm ARC. As I got in to this 6mm ARC brass dried up & 6mm arc ammo was getting pricer & not that available. Think I picked up 7 boxes of factory ammo.Factory ammo did not impress me with any of the loads in my rifle in terms of accuracy.
Suppose the factory ammo was interesting for comparison for my hand-loads to come.
I have done a fair bit of fire-forming & forming the likes of 6mmc was actually of interest to me. Lapua 220 Russian brass was readily available. 6.5 Grendel brass was not. So the natural thing for me to do was to pick up a hundred pieces of 220 Russian brass & try fire-forming.
Well the 220 russian conversion went well enough & produced some fine brass. Some were wondering why a fella would go through all those extra steps to fire-form 220 Russian when the conversion of 6.5 Grendel to 6mm ARC was a 1 step process plus trimming to length. As much as I like having the 6mm ARC brass with the 220 russian head stamp, those who scoffed were on to something.
Eventually I came across some 6.5 Grendel brass to convert, both Starline & Lapua & both produced some fine 6mm ARC brass as well with a lot less time & effort. As you might guess the Lapua was worth the extra price up front as the quality is simply top notch.
Point here is, if you should decide do go down this path B4 more brass suppliers have jumped on board with the 6mm ARC - Fire-forming from 6.5 Grendel is not that much extra effort IMHO.
Look forward to seeing what action you build a 6mm ARC on.