The next custom an Oberndorf M98: What to chamber it in?

[1899]

Don't forget that the .275 H&H uses a .287" vs the standard .284" bullet.

Still think the .300 H&H is a fantastic choice. You can get ~2900 fps with a 200gr Partition. At 4000' elevation that would give you a 290 yard PBT on a 6" target. That covers the goats. You also could do worse on bigger stuff as those 200gr Partitions just plain work!

Far, far less traditional but an itch I just had to scratch is the 7mm Weatherby Magnum. Nice, long case neck, high quality brass, high SAAMI pressure and mild recoil seem to be a good combo. I am just working up some loads on mine - according to Norma's data the 160gr Partition should be around 3200 fps when using MRP powder. That puts your PBR at almost 320 yards.


Edit:
I should also mention that the .270 and 150gr Partition with RL26 is a fantastic combination. My wife's 22" barreled T3 Superlight does just under 3000 fps with this setup. I was at the range about a month ago to make sure everything is ok and shot a sub 1" group with it at 200m (219 yards).

 

[Ardent]

All good points, and I’d make mine a .284” version of it if I went that way.

 

[1899]

All good points, and I’d make mine a .284” version of it if I went that way.

But then its not a real .275 H&H...

 

[Ardent]

It’s better, most of the later ones were .284s anyhow. Got the Rigby peep coming.

 

[hoytcanon]

All good points, and I’d make mine a .284” version of it if I went that way.

Most definitely...

 

[Ardent]

Well things are taking an unexpected and intriguing twist as they usually do when Scotch is involved. Found an option that fits my allowable components list, no new bullet diameters, and I own two blanks therefor. However it will require wildcatting and stock reinforcement. This isn’t 100% a go yet, no reamer ordered, but I should probably get on that with sobriety rearing its ugly head. Got my sight too.

 

[Slimbo]

Is that a 470 ultra mag?

 

[9.3mauser]

Where did you source that Rigby peep?

 

[Andy]

Well things are taking an unexpected and intriguing twist as they usually do when Scotch is involved. Found an option that fits my allowable components list, no new bullet diameters, and I own two blanks therefor. However it will require wildcatting and stock reinforcement. This isn’t 100% a go yet, no reamer ordered, but I should probably get on that with sobriety rearing its ugly head. Got my sight too.

Looks like a beltless 458X2, perhaps based on a 375 Ruger case.

 

[hoytcanon]

Looks like, too much booze, and the delirium that comes with pervasive solitude... call home.

 

[Boomer]

Looks like a beltless 458X2, perhaps based on a 375 Ruger case.

It has a rebated rim, so probably a .284 Winchester case opened up, and slightly tapered to .458. Maybe its time to ask, what's it for?

 

[Ardent]

Where did you source that Rigby peep?

Message inbound Tim.

Is that a 470 ultra mag?

Closest yet, either here or instagram.

It’s a hash up of a .577-500 Jeffery, which I’ll call .577 Morrison. I have .577 components on the bench, and two barrel blanks for it. Realised a few fingers in a .500 Jeff will run into the .577 Nitro die and end up a straight wall .577 that will fit in an M98. The utter maximum that possibly can, headspaces off the case mouth. Stranger still is it will center feed from x57 / standard width feed rails, being just too fat to pop through and presents nicely slightly nose up to the chamber, greatly simplifying feed work.

Extremely high likelihood I’ll back it down to a .500 Jeffery after experimenting at .577. Which really isn’t a bad retreat or way out.

Looks like, too much booze, and the delirium that comes with pervasive solitude... call home.

Ok Ok...

 

[hoytcanon]

A fatter 12.7×70mm Schuler

8000 ft/lb of hurt on both ends...

 

[Boomer]

Message inbound Tim.



Closest yet, either here or instagram.

It’s a hash up of a .577-500 Jeffery, which I’ll call .577 Morrison. I have .577 components on the bench, and two barrel blanks for it. Realised a few fingers in a .500 Jeff will run into the .577 Nitro die and end up a straight wall .577 that will fit in an M98. The utter maximum that possibly can, headspaces off the case mouth. Stranger still is it will center feed from x57 / standard width feed rails, being just too fat to pop through and presents nicely slightly nose up to the chamber, greatly simplifying feed work.

Extremely high likelihood I’ll back it down to a .500 Jeffery after experimenting at .577. Which really isn’t a bad retreat or way out.



Ok Ok...

I guess that answers what its for. It'll get pulled out when one of those know it all, can't tell them anything gun experts starts bragging about all the big guns they've shot. Remember to mount the scope 3" behind the cocking piece.

 

[Ardent]

That, and a hunter’s take on mortification of the flesh.

 

[Slimbo]

That’s gonna wake you up in the morning

 

[hoytcanon]

That’s gonna wake you up in the morning

And put you to sleep at night...

 

[SHELL SHUCKER]

Thank you.

This rifle be sweet, but could use a nice set of iron sights to make 'er complete. I'd love one like that in .458 Win.

 

[Ardent]

Barnes 750gr .577 and a .375 H&H case for scale. 9.3 Mauser kindly sold me brass for the project, thank you.

 

[Evanguy]

Omg and i thought my 460 weatherby im building on a mauser was big. That bullet its crazy large.