Heavier bullets for 30-378

buckrub30-378

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Joined
Jan 8, 2018
Messages
36
Had a local gunsmith mount a Leupold Mark 5 on my Weatherby he asked what bullet weight I was using, I told him I was shooting Barnes X in 180 grain, he said that I should think about going to a heavier bullet but I told him I tried a couple of loads and couldn't get them to shoot as well as the 180's, I'll admit I didn't give it much of an effort because my 180's were performing well enough for my needs, I'm willing to give it another go but would appreciate some help with bullet and powder selection, what's working for those of you with this caliber
 

Dosh

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Joined
Aug 6, 2013
Messages
3,862
Location
Arizona
Rub, my 30-378 shoots the Berger 215 Hybrid very accurately. It shot the 210 VLD very well also. Check out the "Broz" loads in the forum search. The 215 was much easier to find the most accurate load than the 210. Haven't killed anything with the 215, but the 210 has put elk in the freezer many times. Good luck
 

jpd676

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Oct 28, 2010
Messages
517
Location
Jackson Hole, WY
I don't have a 30-378 but shoot a 300 rum. I'm pushing the 225 Hornady ELD-M at 2970 with good accuracy. I shot a 10.5" group last week at 1450, using Retumbo. The Berger is a good option too.
 

Zman99

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Joined
Jul 25, 2016
Messages
84
That is a big cartridge! I run the 208 eldm in my 300 wby with good accuracy but if I had that horsepower I would run the 230 Berger hybrids or the 225 eldm
 

J E Custom

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Joined
Jul 29, 2004
Messages
10,723
Location
Texas
If you want to work your self up to bigger/heaver bullets start with the tried and true 200 grain Nosler partition. It has a very long bullet body
that is not effected by all that free bore.

With the powder capacity of the 378 case, 180s don't take advantage of
the cartridge. In mine, 200 to 220 grain bullets seem to be optimum. I tried the 240 grain bullets, and they shoot well but gave up to much for shots under 1000 yards.

J E CUSTOM
 

buckrub30-378

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Jan 8, 2018
Messages
36
Appreciate the feedback twist rate is 1-10 going to try 215 Berger hybrids and the hornady 212's with some h1000, reloader 33 with federal 215, and Remington 9 1/2 primers
 

gohring3006

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Mar 17, 2014
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4,051
Location
Ohio
The 215 is definitely worth looking at. What elevation are you at? I’ve seen stability problems arise when temps get lower in lower elevations with the 215 in 10 twist rifles.
That’s why I switched to the 225 ELD in 300 Weatherby. Some say the plastic tip theory isn’t relevant in calculating stability, but I think Hornady seen thru Doppler that it is relevant. That’s why the 225 shows a good enough SG for a 10 twist.
 

buckrub30-378

Active Member
Joined
Jan 8, 2018
Messages
36
The 215 is definitely worth looking at. What elevation are you at? I’ve seen stability problems arise when temps get lower in lower elevations with the 215 in 10 twist rifles.
That’s why I switched to the 225 ELD in 300 Weatherby. Some say the plastic tip theory isn’t relevant in calculating stability, but I think Hornady seen thru Doppler that it is relevant. That’s why the 225 shows a good enough SG for a 10 twist.


Hunting elevation will be 3000' - 6000'
 

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