I read Ross Seyfried's data on this many years ago + was quite taken.Still have not built one due in large part to the case form die expense.The actual dies direct from RCBS are not that bad. I am thinking that this should be done on a single shot,#1,etc. Here is my next question. Why could one not use .338 Lapua instead of .416 Rigby as a parent case? Might save on case forming dies. Any comments?

I don't know the 30-416 case length but the 338 Lapua is about 1/6" shorter than the Rigby. Headsize is similar, "supermagnum" ~.590".

So is this like a beltless 30-378, similar to the 7.82 Lazzeroni Warbird?
Throats are said to melt away from the excessive powder. Surely an exaggeration, but maybe with a kernal of truth.

Just curious what do you actually gain except being different and bragging rights around the campfire?

Trust me I've built a good number of wildcats "just because" this I just see as a powder and barrel burner.

rr340,

that may be, but even if you shoot 500 rounds a year and need a new barrel every Christmas; you spent more money driving to the range to shoot it than the barrel cost.

About 1990-91 Dan Lilja, the Mt barrelmaker had one. He called his, iirc, the 30-416 Super Sniper.

Besides, in 1927 Grancel Fitz recorded the first NA Grand Slam using a sporterized 1917 with the original barrel in 30-06.

Is anything over that for power necessary? Not according to Phil Shoemaker, and he guides for Brown Bear in Alaska.

We all like to be different.

since the 378 weatherby cased is an improved 416 rigby+belt, it would be....

a 30-378... turn the belt off...

factory "identical" round

Several years ago I was in Fredericksburg for a "walkfest",don't ask. While we were there we went into an old Geerman gunshop + one my friends noticed a Kleingunther on the rack + was all exicted. The clerk says in broken English,I sink at klien iss a piss of chunck,my oncle Hans used one in the war und shot out the barrell after only 2 sousand rounds. (I'll bet oncle Hans was wearing a grey uniform as well). About the same time a curtain opened from the back + 2 old burger gunsmiths peered out (you know the look,bald,apron,glasses on end of nose,etc.) One says to the other,"Zis could get zerious.) We left.By the same token ,ever since the .264 Win. came out the story was the same as well as with the .220 Swift. Burn your barrell out after xxxx rounds. But realistically who fires that many rounds. Add to that that if you are that affluant I suppose you could afford a new barrell.

quote:

since the 378 weatherby cased is an improved 416 rigby+belt, it would be....a 30-378... turn the belt off...factory "identical" round

I fully understand that. I've always had trouble understanding the 30-378 as well. I simply see it as burning a LOT more powder for a small gain that nothing you shoot will ever know the difference.

I'm sure not saying don't build one if that is what you want. You should build and shoot what you want.

I've just never understood burning 36% more powder for a 4% velocity gain. In the real world does the 30-378 give you anything as to real range and/or killing ability. Or is it simply the big boy in camp.

Again not my cup of tea. To the OP sorry to take it off direction. Have fun with your project.

RR350,In response,I do not want to be different + I certainly do not deal with "bragging rights". I do this for my own interest.Just like photography as many people do. If I wanted to brag I could tell you that I usually use a Nikon F w/a 600mm telephoto + have more lens + filters than God created chinamen..... Thanks Jeff,although I am still intregued in Ross's design,just a hard head I suppose.I have toyed with wildcats over the years but everything I have envisioned was built by Parker at least 20 years before. No humility needed,I was happy for the knowledge.Thanks for the feedback guys.

Paul,your reply came in while I was writing mine. No offense on my part + I hope you feel the same,Best,R.

Well Damn I'm going to put you on ignore "JUST KIDDING"

Brag was probably too harsh a word. I'm old enough to remember when you ordered your new car the same size engine came with 4 or 5 HP options. I do remember paying extra to get say a 375HP engine because my buddy bought the same car but with only a 350hp. Both engines got the job done. Just like both a 300wmag and 30-378. But that darn 375HP did sound meaner.

After a point the extra capacity and velocity serves not real purpose. (MY opinion) I have also built a number of wildcats to see what I could push. (I will admit to more 06 based than 416 ). this tired old boy just doesn't care to touch off 110gr+ of powder. Heck I don't even like being on the range with them.

As I've said before being different is good and fun. Having the only one in camp is fun. Laying that 30-416 case out next to a guys 300wmag is cool. That's what US GUYS do. Doing it just because is a blast.

As I said yesterday bringing up my thoughts didn't belong on this thread. If I wanted a soap box I should have started my own. Sorry.

Too bad my kids moved from Austin I'd buy you a