I emailed Lapua and Starline way back about making 6 Arc brass and they both said as much as "Maybe ... one of these days". Then Lapua dropped the 6.5 Grendel.
No, I haven't tried the .220 Russian to 6 ARC yet, but I have tried 7.62x39 though and I failed miserably while others seem to have succeeded. The 6.5 Grendel to 6 Arc worked a lot better for me.
What I have seen with converting 6.5 Grendel to 6 Arc are flyers. On my last attempt, I converted 5 of a buddies new Lapua 6.5 Grendel brass to 6 Arc and saw it took a couple of firings to get the cases to settle into the headspace (eek!...more primers, powder and bullets!) then 4 of these shoot pretty tight groups with 1 always being a 1" flyer out of the group. It measures the same as the others, but something is amiss with it. Earlier, I also converted a small batch of Hornady 6.5 Grendel used brass with the same mixed results. Granted, this is a very small sample to be making decisions on, but with the cost/availability of primers alone has made me a little leery of going down this path. Spending a lot of time and money to get 1.5-2.0 MOA groups ain't real exciting to me. Ha!
Maybe someone out there that has converted a lot of cases to 6 Arc and shoots long range will chime in to tell me to relax and go use "this" ... whatever "this" is. Otherwise, I basically have decided to eat the cost of another box of loaded ammo just to get the cases while waiting on the never fulfilled OpticsPlanet order to ship.
No, I haven't tried the .220 Russian to 6 ARC yet, but I have tried 7.62x39 though and I failed miserably while others seem to have succeeded. The 6.5 Grendel to 6 Arc worked a lot better for me.
What I have seen with converting 6.5 Grendel to 6 Arc are flyers. On my last attempt, I converted 5 of a buddies new Lapua 6.5 Grendel brass to 6 Arc and saw it took a couple of firings to get the cases to settle into the headspace (eek!...more primers, powder and bullets!) then 4 of these shoot pretty tight groups with 1 always being a 1" flyer out of the group. It measures the same as the others, but something is amiss with it. Earlier, I also converted a small batch of Hornady 6.5 Grendel used brass with the same mixed results. Granted, this is a very small sample to be making decisions on, but with the cost/availability of primers alone has made me a little leery of going down this path. Spending a lot of time and money to get 1.5-2.0 MOA groups ain't real exciting to me. Ha!
Maybe someone out there that has converted a lot of cases to 6 Arc and shoots long range will chime in to tell me to relax and go use "this" ... whatever "this" is. Otherwise, I basically have decided to eat the cost of another box of loaded ammo just to get the cases while waiting on the never fulfilled OpticsPlanet order to ship.