First fire formed .338 BSB case.

[Biggerhammer]

.338 BSB.... .338-.300 Winchester Magnum Improved.

[yorketransport]

It looks like the 338/375 Ruger's slightly taller and skinnier sister!

Any number on it yet?

[jasnt]

It looks like the 338/375 Ruger's slightly taller and skinnier sister!

Any number on it yet?

we want some numbers.

[Biggerhammer]

No.. No numbers yet. Fire formed them at a conservative max for the .338 Win Mag with a 230gr ELD-X.

25 1/2” inch Rock Creek Barrel.

[Jolten]

  BSB.... Big Sonofa Bit...

[yorketransport]

No.. No numbers yet. Fire formed them at a conservative max for the .338 Win Mag with a 230gr ELD-X.

25 1/2” inch Rock Creek Barrel.

I'm a little disappointed, I would have expect you to at least start at max charge for a 340 Weatherby, where's your sense of adventure? I'll bet that 230 ends up around 2950 when you're done.

[Biggerhammer]

Formed .338 BSB case (Left)
.338 Winchester Magnum case (Right)

[Trooper21986]

I'll get some solid numbers posted as they happen . Hopefully sometime today if I get a chance .

[Biggerhammer]

I'll get some solid numbers posted as they happen . Hopefully sometime today if I get a chance .

You owe me a Dewey cleaning rod!

[Trooper21986]

Tisk Tisk ..... You just want the long one !

[Trooper21986]

Finally got to the range with a handful of fireformed cases and did some working up . So far , only one powder tried and it was bound to be on the slower side for the cartridge.

85 grains 4831SC maxed out at 3072 fps , zero pressure signs !

I'm gonna try ramshot magnum and rl26 and try to get a little more speed !