Nosler Brass
- Thread starter dezmick
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,502
- 6,507
You can fire form the brass after sizing the neck. You'll likely find it easier to neck up 270 WSM brass than to neck down 300 WSM brass. However, Winchester brass is quite good and still readily available for the 7mm WSM. 270 WSM brass is available from Norma if you are looking for a premium brass.
G
Guest
Guest
Would you be concerned about the shoulder measurement being a tad short on the necked up 270WSM brass, Mike? I recall the 7mmWSM having a longer body length to prevent it being fired in 270WSM rifles. Maybe I'm showing my ignorance here? The only case forming I've ever done of any great note is 7-30Waters. A few others as "odds and ends" over the years, but nothing of any real volume.
DrMike
Ballistician
- Nov 8, 2006
- 37,502
- 6,507
Very observant on your part, dubyam. The shoulder on the 7mm WSM is set farther forward. That is why I stated that the brass would need to be fire formed. It would be necessary to use a mild load just to form the cases, or fill the case with Cream of Wheat. For my part, it isn't worth the hassle since brass is still readily available from Winchester.
backcountryhunter
Beginner
- Dec 25, 2010
- 97
- 0
if you are going to fire form shorter shoulder brass you will need to seat the bullet firm into the lands to avoid stretching the brasses web thus weakening it, fireform just as you would for an ackley improved case
G
Guest
Guest
Thanks for the clarifications, guys. I'm trying to learn all I can about brass forming as I have a pet project in mind for sometime in the next few years to build a 6.5-280RCBS Improved on a Rem700 action and drop it into an Alaskan stock. I'm thinking a 24 or 26" fluted barrel and some 130gr Accubonds would make a dandy light mountain rifle. It wouldn't be an ultralight, but I bet I could get it down to under 7.25lbs ready to hunt. A good 3-9x40 or 4-12x40 scope and it would be capable out to 400+, easily, still holding on hair.
For it, I'm thinking about forming brass from 30-06 cases, as the 280 shoulder is forward of the -06, so I'd get a 280 sizing die, then use my .277 neck die and then a 6.5 neck die or 6.5-06 die set and use the rifle chamber to properly set the shoulder-neck junction, to form the first cases for final fireforming. I'm sure I'd have to turn the necks, but as much of a pain as that is, it's a one-time thing, so it's not terrible. I'm wondering if I'm crazy for thinking of it this way or not.
Ultimately, the conundrum is: So many rifles, so little time.
For it, I'm thinking about forming brass from 30-06 cases, as the 280 shoulder is forward of the -06, so I'd get a 280 sizing die, then use my .277 neck die and then a 6.5 neck die or 6.5-06 die set and use the rifle chamber to properly set the shoulder-neck junction, to form the first cases for final fireforming. I'm sure I'd have to turn the necks, but as much of a pain as that is, it's a one-time thing, so it's not terrible. I'm wondering if I'm crazy for thinking of it this way or not.
Ultimately, the conundrum is: So many rifles, so little time.
backcountryhunter
Beginner
- Dec 25, 2010
- 97
- 0
you can go from .284 to 6.5 in one step - I die form .284 Win to 6mm/.284 in one step all the time nor have I ever had to turn any necks
I have always found it easier to fire-form brass from a larger case necked down leaving a false shoulder to head-space on. This prevents stretching the web. The thing you have to careful of is a case that ends up too short on the neck if the parent case isn't long enough. I did a bunch of 280 Remington cases from 30-06 years ago when 280 cases were scarce and -06 cases were everywhere. The 280 is longer at the shoulder than 30-06 so the false shoulder head-spaced well.
