30-378 Weatherby

Very high velocity in long barrels.

Requires a long barrel to get the highest velocities.
Brass is expensive.
Burns a lot of powder.
Wears barrels out quickly.
Is not the most accurate .30 caliber.
Not suited for a lot of actions.
 
My brother shoots one and likes it. it is a little costly to shoot. the Weatherby brass is expencive. If I were going to buy one it would be a 338-378 because i think there is better 338 long range bullet selection. but I would probably choose a 338LM over the 378 anyhow.
 
You will find that the 300RUM will do all you want in a big boomer and moderate length barrels.

Lots of horsepower and a smidge more pipe life.

Unless you really want a LR hammer, the super big 30's are not that effecient unless you go 30" or longer pipes. The 300WBY/STW can do some amazing work with 208/210gr VLD's which is great way the H3LL out there.

If all you want is a LR plinker, definitely think smaller cal.

Jerry
 
I'd agree with mysticplayer and go with a .300 RUM. I currently own a .30-.378 sako trg-s. As far as ballistics go the RUM is nearly the same, I haven't got a table in front of me but if I remember correctly it is within 100-150 fps. The big bonus's are the brass is alot cheaper, there is no belt and factory ammo is wayyyyyy cheaper.

Mine rifle has sat in the closet for almost 2 years now so I haven't done a run of reloads in a while. but the last time I did the I had "belt bulge" where the working of the brass in full length sizing (they were hunting rounds) creates an buldge just above the belt. This makes the round very hard to chamber if it is even possible. I had to take the whole lot of 40 to the range and chamber each round of the lot to see which had this problem. The RUM does not have this problem as it does not have a belt so brass life is much longer when full length sizing.

Barrel life, lots of burned powder and expensive hard to find actions are common problems with all the super mags so if you're set on one I wouldn't worry about it, as long as you know they are there.

If I had my time back I would have went with the .300 RUM, an almost identical cartridge with less drawbacks.

osborne
 
I just purchased one & have not shot it yet, I hope it's as fun as I figured it would be, Although it is for sure expensive to shoot, sometimes you just have to splurge.
 
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