Will the neck wall thickness on 22 creed brass let me neck it up to 6mm? Or would it be better to neck down 6.5 CM brass? Can’t find any 6cm SRP
- Thread starter diderr
- Start date
Id neck down whenever possible. Some makes of brass thicken below the neck shoulder junction, and necking up may get you closer or into that area.
Do I need to worry about neck turning at all? It’s just a saami spec proof prefit. Not a tight neck chamber. And it will be alpha brass
I don't know about necking up 22CM to 6CM...
...but I know necking up (and then fire-forming) 22-250Rem into 6CM works great, because I've got Lapua ex-22-250Rem/6CM with 2 barrels and ~13 firings and counting on it, and it works awesome.
Should be fine.
What is 6.6CM tho lol?
You might've given me an idea for a new cartridge: 6.66SLAYER would be metal as fuck, I'm going to need to order a reamer.
...but I know necking up (and then fire-forming) 22-250Rem into 6CM works great, because I've got Lapua ex-22-250Rem/6CM with 2 barrels and ~13 firings and counting on it, and it works awesome.
Should be fine.
What is 6.6CM tho lol?
You might've given me an idea for a new cartridge: 6.66SLAYER would be metal as fuck, I'm going to need to order a reamer.
I’d say neck the 6.5 down to 6mm. I necked down 6cm to 22cm very easily
Necking down will thicken the necks, necking up will do the opposite and thin the neck. How much neck clearance do you have on loaded rounds? If it is tight than necking up would provide additional clearance. If it is really loose than necking down will tighten up some of that clearance.
I have a .277 neck. It’s about .004 clearance on a loaded round
IMO there's only one way it can go bad on you, and that's necking down: necking down from 6.5 stuff is a more complicated process in that to do it without any unwanted surprises you'll need to do it in 2 separate steps with 2 separate progressively smaller/tighter bushings... and if you lube them adequately and everything goes right, then if they don't fit... fuck, now you're going to have to become a neck turner lol.
Necking up from .22 stuff is a simple, no lube necessary, 1-step process using a TiNi/BkNi/carbide mandrel die (I use a TiNi Sinclair .241 Neck Turning Arbor). It's as fool-proof as it gets (a term you hear used incorrectly too much, but I'm a fool and even I can do it without fucking it up lol). The brass will conform to your neck/chamber on the first firing.
Necking up from .22 stuff is a simple, no lube necessary, 1-step process using a TiNi/BkNi/carbide mandrel die (I use a TiNi Sinclair .241 Neck Turning Arbor). It's as fool-proof as it gets (a term you hear used incorrectly too much, but I'm a fool and even I can do it without fucking it up lol). The brass will conform to your neck/chamber on the first firing.
Last edited:
