01-17-2021, 03:53 PM
I used 25grs of Reloader 7 for my fireforming loads with the Nosler 55gr bullets. In the Hornady 6mm ARC load data I have for 58gr bullets, they use Accurate LT-30 & LT-32 powders at 24.9grs & 26.1grs respectively. Reloader 7 is between those two powders on the burn rate charts I have so I figure it'll do what I need it to do.
I exchanged emails with a fellow at Lapua about resizing 220 Russian brass to 6mm ARC. He thought it was a good idea. I asked them about it 'cause it's the only brass I've seen in stock with .441" rim & head diameters. The AA Grendel brass I ordered from Alexander Arms is still a no show from last November. I did see some 7.62X39 brass in stock at a couple of places but I'd rather not use it for the 6mm ARC or 6.5 Grendel. I did resize a few once-fired 7.62X39 cases to both 6mm ARC & 6.5 Grendel out of curiosity. That bump at the case body/shoulder junction is very well pronounced in both versions. From what I've seen written about using fire-formed 7.62X39 cases for the Grendel, they fall short accuracy wise.
With the 220 Russian the necks are being sized up instead of down. I suspect they would still have the "bump" but it might not be as pronounced 'cause their shoulder diameter is a bit larger than the 7.62X39 cases.
My 6mm ARC barrel is still a no-show. Last I heard from PF, it was two weeks out from shipping. That was three weeks ago.
Meanwhile, I've had cataract surgery on both eyes. Whoo-Hoo! What an amazing change it has been!
I exchanged emails with a fellow at Lapua about resizing 220 Russian brass to 6mm ARC. He thought it was a good idea. I asked them about it 'cause it's the only brass I've seen in stock with .441" rim & head diameters. The AA Grendel brass I ordered from Alexander Arms is still a no show from last November. I did see some 7.62X39 brass in stock at a couple of places but I'd rather not use it for the 6mm ARC or 6.5 Grendel. I did resize a few once-fired 7.62X39 cases to both 6mm ARC & 6.5 Grendel out of curiosity. That bump at the case body/shoulder junction is very well pronounced in both versions. From what I've seen written about using fire-formed 7.62X39 cases for the Grendel, they fall short accuracy wise.
With the 220 Russian the necks are being sized up instead of down. I suspect they would still have the "bump" but it might not be as pronounced 'cause their shoulder diameter is a bit larger than the 7.62X39 cases.
My 6mm ARC barrel is still a no-show. Last I heard from PF, it was two weeks out from shipping. That was three weeks ago.
Meanwhile, I've had cataract surgery on both eyes. Whoo-Hoo! What an amazing change it has been!
The trick is growing up without growing old. -- Casey Stengal