230 gr berger in a 30-378 with Retumbo

[PaLuke]

I'm getting some 230 gr Bergers shipped to me and they should be here next week. If anyone has any load data for me with Retumbo or Re 25 I'd really appreciate it. It's a stock Accumark. Thank you for your replies. PaLuke

 

[Fotis]

 

[Fotis]

 

[PaLuke]

Thanks for the reply. Do you think H50 BMG is a better power for the 230's? It's a factory 26" barrel. I don't have a Berger manual. What would be the starting load with the Retumbo. Thanks again. PaLuke

 

[Fotis]

My load with 50 BMG is not max. That I do know. I can go higher but that group is under one half inch. If you're wanting to use retumbo I would start at 98 gr and work up to maybe 102 or 103???

My rifle is a Sako trg-s with also a 26" barrel

 

[PaLuke]

Thanks again for the reply, The only reason for Retumbo is that I'm having a hard time finding every powder except retumbo and I have probably 5 lbs.. When I find some H50BMG I'll pick some up and try it. Thanks again. PaLuke

 

[cwinner]

I tried this combo in my stock accumark 30-378 and found that my max load was 105.0 gr of Retumbo with fed 215M primers...I would start well below and work up cause i have blown a few $3 cases along the way! I forget the velocity but it was well over 3k fps but I was not happy with the accuracy from my rifle, the best I could do was slightly over 1MOA.... I love the 230OTM in my 300Win mag and get sub MOA groups but I had it throated for them when I re-baralled the rifle.

Good luck, they will be a wind busting combination if they shoot good from your rifle, please post your results........

 

[philsummers21]

Updates on this. Working up a 230 load for the 30-378 as we speak. Have H50BMG but would buy Retumbo if better. H50BMG works well with 212 ELD-X. POPs pictures do not show up so no idea what he posted

 

[barefooter56]

Updates on this. Working up a 230 load for the 30-378 as we speak. Have H50BMG but would buy Retumbo if better. H50BMG works well with 212 ELD-X. POPs pictures do not show up so no idea what he posted

philsummers21,
Based on a COAL of 3.648 inches:
RETUMBO - 230 GRAIN BERGER BULLET - 30/378 WBY MAG
START = 94.0
MAX = 99.0
APPROX VELOCITIES = 2748 to 2875 FPS
APPROX FILL RATIO = 91%
These loads are base on the COAL listed and are conservative due to bullet length.
I suggest you start your seating depth testing at .015 off the lands using the lowest powder charge listed above. Once the seating depth accuracy node is found . Work the load back up slowly checking for pressure signs and accuracy until your highest velocity accuracy node is found.
If you have any questions you can contact us here or at [email protected]
Thanks for using our bullets!

 

[philsummers21]

Thanks. Ended up at 110.6 grains of H50BMG with a COAL of 3.700 @ 2938 fps with a ES of 18 for 5 shots. At about .6group. Good enough for this years hunting trip. Will see how these bergers do on an elk and deer. Plan on shooting a deer less then 100 yards just to see if they can handle the task