Home Forums Hunting & Shooting Ask The Gunwriters .30-378? Opinions

I did a search and didn't find this covered anywhere so I would love to hear what you guys think of this super 300.

I like the 300 RUM more, no belt or silly radised shoulder and cheaper brass to boot. About 100 FPS difference between the 2 cartridges with the edge in speed and powder capacity going to the Weatherby.

ear spliting da loud boomer !! most bullettss not suted for this speed. fun to play with. use ear plugs and muffs. stay farrrrrrr away from others at the range. have fun.

Its a fire breathin monster, couple it w/ heavyweight 30 cal. bullets and there aint much you cant do w/ it, so long as you put em' where they go.
200gn. huntin bullets @3300fps, or 220/240gn target bullets @3100/3200fps. will get it done waaaay out yonder LOL.

Gunner

It strikes me this way: If you have that kind of question about it, then you probably don't need it.

It's the prime example of the "Tim Allen" syndrome.

I've enjoyed mine..

Don't make assumptions.

My only issue with the .300 RUM is the rebated rim. I've never heard of one hanging up on extraction, but that would be a concern.

Also, I'm interested in the Weatherby wildcats.

A couple of years ago I was told by one of the main guys at Weatherby that the .30/.378 was now outselling the .300 Weatherby in their factory rufles, which seemed like an interesting statistic.

There is no doubt that the .30/.378 is the largest commercial .30 caliber out there. I have fooled around with a Mark V a little and it was very accurate with Weatherby factory ammo. It also had a muzzle brake, and was probably the loudest rifle I've ever fired, even with ear protection.

A few other guys and I were shooting the rifle from a set-up in the edge of some pines. The ground was covered with fallen pine needles and at every shot, half the needles within 10 feet of the shooter jumped up in the air and flipped over.

No doubt it will kill an elk.

Isn't the Weatherby rebated as well?

I have a feeling that line, and its derivatives ("No doubt it will kill a deer/groundhog/etc."), will become a Campfire classic.

My taxidermist's wife hunts elk with that cartridge. Because he switched to the .338/378 Weatherby. He says the kills are spectacular but I think those cartridges are overbore. The .300 and .340 Weatherby's almost do what the .30/378 and .338/378 do. And for my money I'll take the .300 and .338 Win mags.

No amigo, it's a full diameter rim.

This is one of those guns that I don't think I would have ever pursued, but opportunity can make a guy change his mind. And if I have one, then I can make the argument that a moose/brown bear hunt is clearly a necessity.

Honestly, the question of need is certainly an interesting one, and I can answer that with a "not really". But do I want it? Yes. I want one of every gun made because it's like meth.

And my drug of choice are the Weatherby's and like most addicts I can't give you good reason why.

Regarding the Weatherby sales, that is absolutely shocking. Not in a million years would I have thought that would be the case.

Not to my knowledge. I'd have to look at one at home, but almost positive it is a full size rim.

The Weatherby Accumark is a nice platform for this round. Just enough heft to settle in nicely for long shots but not too heavy to carry around. With the muzzle brake recoil resembles a 270 Win or less to me, but please do wear your hearing protection.

I just checked the cartridge drawings for it in a couple of manuals. The rim is 0.024" smaller than the belt.

I've got a .338 Win Mag and I like it a lot. There is no chance I'm going to jump into the Win Mag/Weatherby argument because you and I both know it's silly, but one of these days I'm going to own a .340 Weatherby because the thought of pushing 225 or 250 grains at those MV's with factory loads sounds like fantastic challenge.

His wife?

Touche, mathman.

I had always looked at the base versus the rim differential and it's .003. Quite a bit more than the .300 RUM, if you don't take the belt into consideration. But everything I've read (which isn't a ton), makes reference to the .30-378 as a full diameter.

The belt is the part of the case just ahead of the extraction groove, so it seems to be the appropriate thing to compare with the rim.

Mine was a Sako. It is quite a thing to shoot! Everybody takes notice. Recoil is brisk, report deafening. Weatherby factory loads were way too hot in the Sako. I fired just a few, then dismantled the rest to handload. The factory rounds I did fire could not be reloaded because new primers would not stay seated. The max load of a certain powder and bullet I found in published data was 117 grains. I started getting CHE at 112 so I backed down to 110 and stayed there. Accuracy was spectacular. I got a screamin' deal on the gun, so I came out ahead at trade-in. Wish I had kept it if for nothing else but the WOW! factor.

I still have my 300 RUM. It is a bit tamer than the 30-378, probably because the Remmy 700 BDL/SS has a tupperware stock and good R3 pad. It shoots really well, and will kill any animal I will ever encounter much farther than I will probably ever shoot at an animal. I have killed a few deer with it. They don't die any quicker than deer I kill with my smaller rifles. If I ever go elk hunting again, I'll pack the 300 RUM.

If you want to spend less money, find a good 300 RUM. But if you want the "baddest of the bad", and money's no object, Get a Weatherby 30-378. Both are good.