Which 30 Cal Magnum for the new Berger 245grs?

[Broz]

I spent lots of powder with multiple 30-378's. That's was back when 210 was a big bullet. Brass was gone in 3 to 5 firings with velocity only 100 fps faster than a 300 win mag. I am not visiting that again for a while. I have had 338 LM's in Lapua brass ran at full throttle go 15 firings on brass. I don't see why I could not get close to that with a 30 cal version unless I ran it in "Oh Shit" mode.

Jeff

 

[Cody_W]

I spent lots of powder with multiple 30-378's. That's was back when 210 was a big bullet. Brass was gone in 3 to 5 firings with velocity only 100 fps faster than a 300 win mag. I am not visiting that again for a while. I have had 338 LM's in Lapua brass ran at full throttle go 15 firings on brass. I don't see why I could not get close to that with a 30 cal version unless I ran it in "Oh Shit" mode.

Jeff

Jeff,

Thank you for the input. I believe the Lapua family will be what I use.

 

[unclericco]

Resurrecting this old thread. Anyone heard any rumors on this projectile? I have a 28" Proof CF barrel 9 twist 300 Lapua riding the pine waiting for it. Hopefully 9 will stabilize them?

 

[Ryan Avery]

300 RUM +p
30 Lapua AI
300 Terminator

Whould be my choices at the moment.


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[unclericco]

Yeah i debated AI, hoping i can get the velo i need with what i have cause i don't want to shorten the barrel any!

 

[Ryan Avery]

Has to send them over 3000 FPS to worth it to me.


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[unclericco]

That's the magical number, thinking I'll be slightly below that tho

 

[bigbulls]

Might take a look at the 300 RBH

 

[Ryan Avery]

Might take a look at the 300 RBH

That’s off a Norma? Might as well go 30 Lapua imp if you are fire-forming anyways.


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[mtmuley]

The OP stated a no budget build. I'd call Kirby. He can make the big .30's move. mtmuley

 

[Ryan Avery]

The OP stated a no budget build. I'd call Kirby. He can make the big .30's move. mtmuley

And five years later he might get it

 

[mtmuley]

And five years later he might get it

I read where he's changing that. I believe he is moving more towards off the rack rifles he's already completed, and less full custom rifles. Had the privilege of meeting him and shooting his rifles a few years back. Still have a grin on my face. mtmuley

 

[ID-Muley]

30-338 Lapua Ackley imp. Great brass avail and plenty of go without being too much...

 

[sportsmans challenge]

30-338 Lapua Ackley imp. Great brass avail and plenty of go without being too much...

There is a chance this year we may see a factory 338 lapua imp as well as a 30-338 lapua imp, that or just neck down the 338 and go

 

[WRO]

Just make a 30xc..

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[Broz]

I have learned so much in the last few years about big 30's, .580" bolt faces, and what it takes to make one shoot well, shoot fast and actually keep a smooth function on 3X fired brass. I do have a plan. We shall see.

Jeff

 

[Hunterturbo]

I am running the 30-378. I have shot out another barrel so I went to a Lilja 30" #5 contour 3 groove with break making a 32.5" tube. I am running the 230 Hybrid Tactical at 3200 fps and getting great accuracy. Easily sub moa. I can push them to 3300 but starting to get pressure signs. I am looking forward to trying the 245's as well but am not sure as to how much advantage over the 230's I will obtain.
Best of luck on you choice.
Hunterturbo

 

[The Fish Box]

Now that some time has passed by what are guys thinking of their cartridge choices for these bullets?

 

[Cody_W]

I ended up building a long throated 300 RUM with a 30” CarbonSix barrel, I’m running 92.5gr N570 pushing a Berger 245gr at 3088fps with an ES of 9 without any signs of pressure shooting less than a half inch. I plan to push it harder after a few hunting trips this fall. If you plan to run a box mag go with a 300 Norma though. COAL is 3.935“ with my setup.

DO NOT start at this load. Every rifle is different and this could very well be over max for other rifles.

 

[Quicksilver]

I was going to say if length restrictions are going to be present a 300 norma mag improved is about the best setup you’re going to get. Could have defensive edge + P the throat and pickup some more velocity. Apples to oranges but most improved version run the 230 3030+FPS. +P and you should be equal with the 245. If length isn’t an issue then it opens up a few more options previously mentioned already.