.30-378 Weatherby Shooter

[LazzInc]

Orion ,,,,,

I know that you like the braggin rights associated with the velocities you are stating here, but please back off a bit, you are shooting in the 80,000 - 90,000 PSI range, and that is getting beyond even manufacturer proof pressures ,,,,,,,

if the slightest thing goes wrong, you may need a face shield ,,,,,,

 

[Orion2010]

Iam not shooting 10,000 rds a year .

A Barrel every 10-12 years not a issue or 2 reloads on a brass case .
Buy a 308 if you are into cost for a 30 cal.
Long range hunting is the wrong forum for cheap and barrel life.

 

[J E Custom]

Iam not shooting 10,000 rds a year .

A Barrel every 10-12 years not a issue or 2 reloads on a brass case .
Buy a 308 if you are into cost for a 30 cal.
Long range hunting is the wrong forum for cheap and barrel life.

Barrel life and brass life is not an issue with most long range shooters, But safety is a big issue.

LazzInk gave you some good advice and even though the Mark 5 Weatherby is a tremendously
strong action 65,000 to 70,000 psi should be the limit.

I build lots of rifles on the Mark 5 action because it is such a strong action but you are exceeding
the design pressures and encroaching on the safety limits of the Mark 5 design.

Roy Weatherby exceeded 5100 ft/sec with the 30/378 while testing for the military and determined that it wasn't worth the problems that he encountered just to get that much velocity.

I would recommend checking your chroney for accuracy against another chronograph just to verify
the velocity (These velocities seem excessive).

Have fun, but be safe.

J E CUSTOM

 

[HARPERC]

I've never seen an indication either of these gentlemen giving advice are cheap or capricious.

LRH or not you haven't discovered lightning in a bottle. Not only would I not shoot your loads I wouldn't remain on the line with the information provided at this point.

Best wishes, and luck.

 

[Orion2010]

I have had 2 chronographs and a guy at a range said the same thing I shot over his same readings. Yes I have hit 4600 fps with baby bullets but not real only for a reading.
I can be done it sorry , ball powder , drop tube , VV nice as well as H870 .
I nickel plate the brass after full processing as well on hunting loads, helps life to 3 -4 pending , accuracy and pressure.
Mark V is amazing action that can take a lot.
No data for 30-378 improved or regular or no real testing of powders. I have shot 10 s of 1,000 of rounds out of Weatherby since 1976. I had them all and wildcatted them .
No magic its physics , powder burn rate , capacity , bbl length, primer types 215M .
I have killed at long range on 100s of animals since then as well before range finder BS and spotters . CMP great but you know the distance so a 308 works , if you don't know exact distance you need to be flat , but then its guessing after 600 yds somewhat. I have taught what I learned but the best is to go to a 1500 yd plus area walk around and pick out an object not knowing distance and just play. You figure it out, no Benchrest range for animals.
The best kill round in North America Game is a 378 Weatherby , 250 Barnes X bullet at 3550 fps . Barnes works at excessive velocity and 100 to 1000 yds , sierra doesn't work at all under extreme velocity.
I have played a ton with this not my first rodeo .

 

[4xforfun]

Must all be safe and true, because I am reading it on the internet!!

Tod

 

[ridge rider]

One less in the gene pool mightn't be bad

 

[Orion2010]

There are doers and there are internet BS , What to wager 10K on it ?
You can claim BS.
I have nothing to prove and don't BS . Only want people to reload and realize the potential of reloading. They are reloading manuals /guides they are not cook books. explore the limits , there is good data for 223 and 308 but not the wildcats at all.
I like when someone claims a 308 is great but a 30-06 isn't , or a 300 win mag or a 300 weatherby . Physics 150 gr 30 cal in each does what? one kills and the other doesn't? No speed kills . A 200 mph car needs at least 600 HP why?
17 Remington goes 4000 fps but does you now good , its a bad P dog gun why? stop reading magazines and cook books.
Do you chip your Diesel truck? The manufacture could but didn't why? more fuel over a time period and more turbo boost are you stupid ? Is it BS ?
Internet ? can you type into your chrono display any speed ? Come on .

 

[4xforfun]

MORON!!

You keep saying "just physics"!!

You want physics........ Dump X amount of your powder into your case that creates WXYZ velocity (your velocity) and you get 80000 to 90000 pounds of PSI. It is unsafe, and it is what we are are trying to tell you!!

You are right......it is just physics..and it is fricken DANGERIOUS.

Let me help you out here...you can skip the whole drop tube thing and just use three grains less of Tightwad, HP38, or H110!! Should fit fine.

Then POOF, you will get way more physics!!!

 

[Orion2010]

Buy factory Ammo and enjoy , Mo.

 

[B23]

You almost seem to be the alter ego of a former poster that used to preach A LOT of the same stuff. You didn't happen to be a "rocket scientist" in a former life by chance or do a little out of state hunting and get in a bit of trouble, did you???

I'm sure I am not on your level because I haven't been doing this for 32 years so indulge me if you don't mind but are you only interested in how fast you can shoot lighter weight bullets with zero concern for over pressure and or safety??

It was stated earlier you were loading/shooting in the 80,000-90,000 PSI range. I think those numbers were actually quite conservative because with the speeds you're talking and 130+ grains of H870 with the 185's, you're likely well above that.

Your whole approach seems reckless at best but as long as you don't hurt anyone else in the process, go for it! Here's a thought, since over pressure and or safety is of no real concern to you, maybe try a powder that's quite a bit faster burning. You'll get more loads per pound and they won't have to be quite so compressed. Just think how fast you could get those babies cooking with a big ole charge of Unique and you'd certainly get more rounds loaded per pound.

 

[Orion2010]

Never did I state a pressure number or load data .
You assssume all of the numbers , I showed a chrono reading and a 30-378 improved case .
Amazing Mo
Step out of the box , you'll be ok.
Explore your own comfort levels with reloading and learn there is more than guns and ammo magazine or sierra reloading guide . Methods .
How many turn case necks , but you think a drop tube is a pipe bomb method .
That is one option. Speed limiter on your car and 100 hp Prius work for some people.
I could care less about the chrono reading only performance on impact and lights out on an animal. typically at long range that means speed to be successful .
yours truly
Mo

 

[HARPERC]

........Your whole approach seems reckless at best but as long as you don't hurt anyone else in the process, go for it!..............

Really the only reason I posted earlier, is hopefully by some of us indicating you're off your meds, some one with less experience doesn't stumble onto your practice, and proceed as indicated.

It's apparent this has turned into a "tar baby" type of experience, better to cut it loose, and wash up early.

At any rate now that we've revived a 4 year old thread that's drifted farther I'm sure than the OP intended, I'm done with it.

 

[J E Custom]

Really the only reason I posted earlier, is hopefully by some of us indicating you're off your meds, some one with less experience doesn't stumble onto your practice, and proceed as indicated.

It's apparent this has turned into a "tar baby" type of experience, better to cut it loose, and wash up early.

At any rate now that we've revived a 4 year old thread that's drifted farther I'm sure than the OP intended, I'm done with it.

+1

We are not piling on, just trying to save you some grief. Most people want to help and with the right approach will share there experiences, good or bad.

There are people that have more experience than me (I have 50 plus years of reloading) and have tried the hi pressure loading route and came to the conclusion that it was not worth the risk, and would pass on there experience and recommended safety practices to prevent someone from finding out the hard way.

I am also done with this thread because I can no longer contribute.

Good luck

J E CUSTOM