Another SA 30 Cal build

[806guns]

Hey guys im wantIng to build a 30 cal SA magnum. With lapua coming out with 300 WSM brass it seems like a no brainer. I am seeing threads with guys shooting the 210 bergers. I would like to stay in the 190-210 range for a SA Mag. Is the 300 wsm the better 30 cal SA mag cartridge? I see the 300 SAUM and 300 SS as well. Yes I know the oal restriction being a SA.

 

[Brucebarker024]

I could be wrong but I think the 300 SAUM would be easier to fit in a short action with the longer heavier bullets because of the shorter overall case length. I imagine speeds would be slightly lower but probably less than 100 FPS or so. Easier to find brass or just buy factory ammo for the WSM.

 

[Kimber7man]

I’m going to build a 300 SAUM to shoot the 185 juggernaut. Plenty of high quality brass to last the barrel life right here:

For Sale - 300 SAUM Brass

We have partnered with ADG for a limited production run of 300 SAUM brass. We are offering 50 count packs in their hard boxes for 99.50 each. Shipping will generally be $25 per order. Production will begin 9/20 and product is expected to be completed, packaged and shipped out to our location...

www.longrangehunting.com

 

[sierracharlie338]

Don’t discount the 215 Berger. It’s a great killer.

 

[806guns]

Don’t discount the 215 Berger. It’s a great killer.

Just a little long in a 300 wsm SA

 

[sierracharlie338]

Just a little long in a 300 wsm SA

Got ya

 

[Slick8]

I say lapua brass makes the wsm a no brainer.

Imo, your handicapped by trying to shoot heavies from a SA. Get a long throated 300wsm and go LA if necessary. Just losing too much powder capacity for heavies.

In a Sammi spec I'd look hard at the 185 Berger.

 

[806guns]

I say lapua brass makes the wsm a no brainer.

Imo, your handicapped by trying to shoot heavies from a SA. Get a long throated 300wsm and go LA if necessary. Just losing too much powder capacity for heavies.

In a Sammi spec I'd look hard at the 185 Berger.

Any idea on speeds with a 185 berger ?

 

[Mike D Texas]

Any idea on speeds with a 185 berger ?

I have a 300 SAUM Improved that has the same powder capacity as a 300WSM and I get 3000fps with the 185 Juggernaut in a 21” barrel using RL26. Expect 80-100 fps less with “temp stable” powders.


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[B23]

With a BAT short action or similar that's cut to accept UM's detachable mag systems they have a SA mag that allows an OAL of up to 3.150 which should work with a 300 WSM and Berger 215's. I'm using a SA BAT Igniter w/UM's detachable setup with their Short XL mags in my 25 SAUM build for the long 130's class bullets.