BIG 8mm?

[Rich Coyle]

My .com friends,

I'm thinking about building a big 8mm. The bullet I chose is the Hammer Hunter 198 grain bullet. If I use the big Lapua case in a 28" barrel what velocity do you guys think is achievable?

Thanks.

 

[CA48]

Standard Lapua 3350-3400
Improved Lapua 3500-3550

Either way is pretty lethal

 

[8x68s]

oo-oo-oof, you've got a tougher shoulder than me! 8 Rem mag is my limit... I have a blank Benchmark MTU in a 10 twist and 28" (26" finish??). I'll make you bargain!

 

[Rich Coyle]

Thanks, CA48.

8x68s, Everything I have, except .22 LR, has a brake.

 

[8x68s]

Me, too, for the cannons. If you're interested in the barrel, I'm in need of a 6.5 not-so-heavy... if not, then 2/3's of the going price.

 

[Frank in the Laurels]

...it's waiting fer' ya....the 8mm rem mag, a bigthumper that sorry to say most have never heard of or shot...another brilliant cartridge sabotaged by BigGreen...

 

[Calvin45]

My .com friends,

I'm thinking about building a big 8mm. The bullet I chose is the Hammer Hunter 198 grain bullet. If I use the big Lapua case in a 28" barrel what velocity do you guys think is achievable?

Thanks.

Not big enough .

Peterson makes brass for a cartridge called a 33XC, designed by David Tubb, like a 338 lapua if it was another .400 or so of an inch longer, total case length 3.087" or a hair over 78mm. Same .580 head diameter.

Not that far of a neck down to 8mm, would be more "efficient" than the 30'cal I want to build off that case haha.

If you're gonna go big go really big. If not just do an 8mm rem mag as the easy button.

8mm RUM could be fun too, more practical and economical than my idiotic monstrosity haha.

 

[std7mag]

I wasn't aware there was a small 8mm....

 

[Calvin45]

I wasn't aware there was a small 8mm....

I have it, an old husqvarna 8x57 haha

 

[JiggyIi]

...it's waiting fer' ya....the 8mm rem mag, a bigthumper that sorry to say most have never heard of or shot...another brilliant cartridge sabotaged by BigGreen...

A totally butt kicking wonder Cartridge spawned the 7STW

 

[JiggyIi]

Not big enough .

Peterson makes brass for a cartridge called a 33XC, designed by David Tubb, like a 338 lapua if it was another .400 or so of an inch longer, total case length 3.087" or a hair over 78mm. Same .580 head diameter.

Not that far of a neck down to 8mm, would be more "efficient" than the 30'cal I want to build off that case haha.

If you're gonna go big go really big. If not just do an 8mm rem mag as the easy button.

8mm RUM could be fun too, more practical and economical than my idiotic monstrosity haha.

Then go 8mm/378 or neck down the 338/378

 

[Calvin45]

Then go 8mm/378 or neck down the 338/378

Nah. First off neither lapua, adg, nor Peterson makes brass for the .378 fam. Strike one (for me)

Secondly, the XC is actually bigger than the 378 case…between the greater volume and much better brass the xc smokes the wby here.

Of course neither option makes much sense but if you're gonna do something ridiculous commit to it fully

 

[std7mag]

I have it, an old husqvarna 8x57 haha

A tried & true cartridge.
What's not to love?

 

[codyadams]

I wasn't aware there was a small 8mm....

My father built an 8mm-06 off a german 98 Mauser, used the military stepped 8mm mauser barrel and just reamed it with an 06' reamer and throated it appropriately. Instantly made the German rifle better after having an American cartridge shoved up it's rear end! Ha ha. 180's at 2900+, and an abundance of brass (30-06). Fantastic timber elk rifle.

I think an 8mm-.338 Norma or NAI would be a sweet cartridge as well, but wouldn't quite perform with a Lapua or LAI. I have a soft spot for the Norma though, I have put together two, and really enjoy the cartridge. Super easy to tune.