Home Forums Hunting & Shooting Hunting Rifles Weatherby Accumark 30-378 **Your Thoughts Please**

I have known some guys that pack some fairly heavy rifles(10#) up some kick-azz Central Idaho elk mountains and they do just fine.
That being said, I am liking the lighter rifles myself these days, especially on backpack hunts.
As far as the Accumark goes, although I haven't owned one chambered to 30-378, I did a fair amount of work with one in 338-378,and it was a PITA to get to shoot any game bullet worth a hoot.
My 340(also an Accumark) is a much less finicky beast and is a keeper IME.

I do have a "30-378" though, in the form of a 300RUM in a M700LSS, shoots 200gr partitions @3200 under 1 MOA.
I love that rifle!!!

With a horse.....I've taken elk off mountains without them....not anymore. 1Minute,if you wanna lug a 10 pound rifle around,be my guest!

I wouldn't even consider buying an Accumark in 30-378 since it has no real world advantage over many other .308 (mag)on the market but step up to the 338/378 and you are now in the big boys league. You can shoot the same bullets coming out a Lupua with even more power, maybe with a tad less accuracy.

Dino: You write the check...and Denver and I will haul the rifle and help find the elk ....Keep it at 8 pounds or so...smarter guys than us figured that out awhile back

Get the rifle and get a draft horse. LOL

Well just from the standpoint of the recoil, I'd love to watch some heroic type burn through a couple of boxes on a bench just to watch him getting the crap beat out of him. but then, I like watching Ultimate Fighting too.
As for me, you'd have to threaten to cook and eat my dog to get me to fire one only once and I'd only do that standing.

But, to each his own. Enjoy!

I really like mine.I've packed it for many miles in an eberlestock pack, using the rifle scabbard. The weight dont bother me too much, the length is my biggest complaint! Its always in the damn tree's! That said if I am going on a extended back pack hunt, it aint the rifle I take.

I see you've decided against getting it, but if your curios, I posted some targets and load's in the LR forum under "587 muley" on about page 5.

Had one of those big Tactical Models for a T&E. It was very accurate but IIRC I summed it up as great for a shooter who didn't have to move around much.

Only thing I killed with it was a crow at about 200 yards. Deadest damn crow ever I did see. Eat right up to the bullet hole too.

Sent it back with few regrets. Now the extry light .308 Weatherby I had I still regret deeply not taking into permanent custody. Extremely accurate. Killed a slickhead and missed a coyote with it. Deer was deader than the crow for sure.

My 300 RUM with 95grs of Retumbo produced 3200 with 200gr Accubond. Guy with 30-378 needed 106grs to produce 75 FPS more. Oh goody

You have to understand that companies that create data are scared of the 30-378. As the manuels get newer the velocities gets slower. Theres no doubt that the 30-378 can push bullet faster that the 300 RUM. I believe it can push a 180gr bullet over 3500fps. Its going to take a plenora of testing to do so and they wont publish those loads to the public. For example I just bought the new Barnes and Nosler manuel last night. They have the 7mm RUM running 3000fps with a 175gr bullet! Im pushing a 180gr bullet in my 7mm-300wsm at that same speed.

Ive got a Accumark in 30-378 with a VX3 4.5-14x40. With the lowest reduced loads in the book ive got it to shoot under 1" at 100yds and with more tweaks it should go lower.

Yes, what you're saying makes perfect sense. I've read similar comments before about overbore magnums....especially the 7mm RUM. One of those cases where I didn't think before I posted those numbers

The Barnes book is producing faster speeds probably from the bullet design. I have the new barnes book also.

I know how that is, my 300 WBY needs 85grs of 7828 to get the 200g Accubond out at 3128. Guy with the 300 RUM needs 95grs of Retumbo to produce 75fps more. Oh Goody

Good point I was wondering if somebody would bring that up. Obviously bigger cartridges are less efficient. We all know that.

And the 300 win only needs 79grs to get 3020, And the Norma only needs...and the 30'06 only needs....oh goody!

(sorry lazier, this wasnt meant for you)

Why worry about a few grains. What would that cost be 8 cents /reload more????

Kind of silly isn't it, I have a couple of wildcats based on the RUM cases that burn around a 100grs a pop. My 338 Allen does sting the wallet a little at 142grs a pop though.

The 30-378 is the baddest of the bad in 30 caliber. It's not about efficiency or anything resembling the 'middle of the road.' People who stick with this caliber want absolute top performance regardless the costs. Along with being the most powerful, flattest shooting 30 caliber rifle, it is also the loudest, hardest recoiling, and most expensive to shoot. You have to want it. I had one for a while but sold it. Of course I wish I still had it, but I don't really need it, and unfortunately need is creeping into the equation more and more these days.

Something I have mentioned here on other occasions, but bears repeating, is that Weatherby ammunition in this caliber is definitely on the hot side! At least the box I bought was. They were loaded with 200 grain Nosler partitions IIRC. I suspect the factory ammo is taylored for Weatherby rifles with freebore. It was definitely too hot in my Sako. I fired only 2 or 3 then disassembled the rest and loaded them myself. The cases I fired as loaded by the factory had to be discarded as they would not hold a primer (they would fall out). Head expansion was 0.005".

I loaded 180 grain TSXs over 110 grains of Retumbo. The data I had indicated a maximum of 113 grains, but I got pressure signs beginning at 112 grains so I backed down to 110. Accuracy at 110 grains was stellar so I left it there.

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