30-378 Wby Mag & 300 Win Mag Loads Needed

[drenner43]

Hey guys I had some loads and misplaced them. I need loads for the listed calumets using H-1000 & H50BMG with Berger 210 Hunting VLD's and 200 Accubond's. I need loads using only these components. They are what I have at the moment and will be using. Thanks

 

[Broz]

Start with 96 gr of H-1000 and work up wth the 30-378. Watch for an accuracy node about 98 gr. For the 300 win start at 74 gr and work up. If you dont see pressure first watch for a node about 77 gr. Start low and work up. I have seen more than one 300 win go hot before 77 gr. Both of the above loads are for 210 Bergers and a Fed 215 primer or a CCI 250.

Jeff

 

[drenner43]

Jeff,

Thanksso much I was really hoping you'd chime in. I knew you had sone good recipes. I had gotten them from you before and lost them. Should these work for the Berger and accubond?? Thanks again

Daniel

 

[Broz]

Jeff,

Should these work for the Berger and accubond?? Thanks again

Daniel

Not sure about that. I use them with 210 Bergers.

Jeff

 

[drenner43]

Jeff,

I'm assuming all of these are compressed loads and that isn't a problem? Thanks

Daniel

 

[Broz]

Jeff,

I'm assuming all of these are compressed loads and that isn't a problem? Thanks

Daniel

No not in my brass, I use wby brass for the 30-378's.

In the 300 win I am using Lapua brass which is no longer produced. I think if you get to 77 gr safely in the 300 with WW or RP brass you will still have a little room depending on seating depth for your rifle. But if you use RWS brass you will probably see pressure at 75 gr due to the lower case capacity.

If you use RWS brass and have a short throated rifle or short mag box, then you may see a compressed load for the 300.

I would start about .020" off the lans and get the charge then fine tune with depths.

Jeff

 

[drenner43]

I've got them all loaded now. The wby loads were not compressed, however, all of the 300's were compressed. I am using RWS brass with a case length of 2.61 and an overall length of 3.37 which was max length for my magazine. I started at 74 grains and went up in .5 grain increments to 75.5. Do you think I'll have any problems with all of these loads being compressed?

 

[Broz]

I started at 74 grains and went up in .5 grain increments to 75.5. Do you think I'll have any problems with all of these loads being compressed?

Opps, detachable mag box? That could be hot depending on your chamber dimentions. I would load a few up at 72, 72.5, 73 and 73.5 one of each to shoot first. That way you can work up to the 74 if all is good.

Sorry, never loaded them that short in RWS. But better safe than sorry

Jeff

 

[drenner43]

Thanks Jeff, I ended up not shooting the 300 loads, I'm gonna reload them like you suggested. Both 300's (mine & dads) are Rugers. What COAL do you normally load your 300's with the 210. With the COAL i'm going to have to use, is that going to work with the 210's seated that deep? Or would I be better off going to a different bullet?

What speeds are you seeing out of your 300 and 30-378 loads?

Thanks

 

[Broz]

That load in a 30-378 with a 26" tube will be about 3050. The 30" tbe I shot it in was 3120.

The 300 load , depending where you end up will be 2850 to 2900 or a bit over.

The 300's we are shooting now are custom chambered with a longer throat. So my coal will not apply. I would just shoot some and see how they do. All the Rem Senderos I have shot them in shot them very well.

Jeff

 

[drenner43]

Thanks Jeff. What is your COAL on your 30-378 loads? Are you shooting out of a factory Weatherby Accumark anymore? Thanks

Daniel

 

[Broz]

Thanks Jeff. What is your COAL on your 30-378 loads? Are you shooting out of a factory Weatherby Accumark anymore? Thanks

Daniel

I sold both my 30-378 Accumark and the 30-378 30" custom. I now shoot the 300 win custom with 210 Bergers.

The base to tip OAL of the 30-378 for both of them was 3.800" That was .020" shorter than the mag box.

Jeff

 

[drenner43]

Great, thanks for the help and info!

 

[Stevewix]

.300 Win loads-
FWIW My rifle with H1000, Hornady 208 and 225 BTHPs liked 79 grains for the 208s and 78 grains for the 225s, respectively. This was done with a PTG .300 Win Match chamber, Rock Creek 10" twist barrel, R-P Brass and FGMM Primers. 225's going 2887 out of 26" barrel with SD of 7. Slight flattening of primer and ZERO ejector mark.

Previously I used 73.5 RL22 under 200 Accubonds in a different rifle, 2823 FPS.