US869/ 300 RUM ?
- Thread starter Shubey
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Calvin45
Well-Known Member
You'll run out of case volume before you hit pressure or realize full 300 RUM performance with 180s. 230-250 grainers would be more appropriate for such a slow burner.
Calvin45
Well-Known Member
Yup! I was just looking at hodgdons data…the do indeed have data for 180s with 869, it's not that it can't be done but the velocity tops out at 3070 or so with 107 grains of the stuff packed in there if I recall correctly, I'm just thinking why use up barrel life and components and generate all that blast and recoil just to match boring old 300 win mag performance?
The other four you list here should all be great, and of them my moneys on rl25 yielding the highest muzzle velocity and overall performance.
Rl22 may be a tad on the fast side for the RUM case but I suspect would still make more sense than 869 on the other end.
Start at 100grs. And might get as much as 110. All guns are different.
May see 3200.^^^^^^^^^
May see 3200.^^^^^^^^^
hesse
Well-Known Member
Lot of people use retumbo
MagnumManiac
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I used it in my 338 Edge, but I had to extrapolate and confirm with QL and the Pressure Trace. Have none left and never got a chance to try it in my 300RUM, it would be ok with 220g+ bullets.
Retumbo is the perfect powder and H50BMG works quite well also.
I run 200g-210g bullets in mine or 180g TTSX.
Cheers.
Retumbo is the perfect powder and H50BMG works quite well also.
I run 200g-210g bullets in mine or 180g TTSX.
Cheers.
Aussie Hunter Steve
Well-Known Member
Me too…. And they're still around .5 MOA at 1000yds on a good day
Lefty7mmstw
Well-Known Member
It's right on the edge of a bit slow to work, but it gets to pressure.
Bullet: 180 GR. BAR TTSX-BT
Diameter: 0.308"
Case: Remington
Primer: Remington 9 1/2M, Large Rifle Magnum
| Starting Load | Maximum Load | Availability | ||||||||||
| Manufacturer | Powder | C.O.L. | Grs. | Vel. (ft/s) | Pressure | Grs. | Vel. (ft/s) | Pressure | ||||
| Hodgdon | US 869 | 3.600" | 98.0 | 2,861 | 47,000 PSI | 107.0 | 3,155 | 58,700 PSI |
from the Hodgdon site with a 24" bbl. rifle... you do need a rather sticky 180 like the Barnes to make it work. In a 26" bbl. this would be north of 3200 fps.
I'm a bit surprised they can only get 107 gr in the 300rum though, but I guess every powder has its own density. I've gotten quite a few grains more aa8700 or wc872 in a 300 rum with 180's before...
180 what? For instance, if it's 180 EH, contact Berger's Tech Support, who will provide a load recommendation list similar to the one below.
meatyrem
Well-Known Member
Retumbo is #1 for this round. The other you mentioned will work but not as well as Retumbo
