.375 Ruger recipes?
- Thread starter Curt
- Start date
- Location
- Somewhere on the Hudson Bay Coast
I've had difficulty getting the velocity I wanted from the 260 gr AB's. I would of been happy with 2700 fps, but never made it. Either I ran out of powder capacity (slow Powder) or I ran into pressure issues (faster powder). My testing was done at cold temperatures (-32) and my test powders included W-760, H-4350, and R-19. I've ordered some Hodgdon Hybrid 100V from Higginson's that I have high hopes for being the nearly perfect powder for this cartridge. The burning rate falls midway between H-4350 and H-4831, but it is a ball propellant so the loading density will be higher than with an extruded powder of equal weight, in other words, I shouldn't run out of capacity. Once the powder arrives I'll work up some loads and post the results.
In the meantime, the Hodgdon website has loading data for the .375 Ruger. The powder that did the best for us with the 260 gr AB was 80.0 grs of Winchester 760. Pressure signs were noted at 81.0 grs, and the Hodgdon site recommends 79.5 grs as maximum. No drop tube was necessary as was the case with R-19, but we had a maximum velocity of only 2600 fps from the 20" barrel. Undoubtedly the velocity was depressed due to the cold conditions, and our maximum load of 80.0 grs might prove to be too hot if used in warm conditions.
In the meantime, the Hodgdon website has loading data for the .375 Ruger. The powder that did the best for us with the 260 gr AB was 80.0 grs of Winchester 760. Pressure signs were noted at 81.0 grs, and the Hodgdon site recommends 79.5 grs as maximum. No drop tube was necessary as was the case with R-19, but we had a maximum velocity of only 2600 fps from the 20" barrel. Undoubtedly the velocity was depressed due to the cold conditions, and our maximum load of 80.0 grs might prove to be too hot if used in warm conditions.
ricciardelli
CGN Regular
- Location
- Montana, USA
Gatehouse,
Is your rifle the Ruger Alaskan? What kind of velocity did you get from the factory Hornady 270 gr SP's? The published velocity is 2840 fps from a 23" barrel. I thought that with the shorter barrel I would have been lucky to see the mid to high 2600's. I had an average of 2718 fps and was quite pleased. Your results with H4350 is faster than that. That is great performance in my opinion.
I really like that Alaskan, I just recently purchased one. Fits me nicely and I do love that Hogue overmoulded stock.
Can't wait to see the results of 4600 lb/ft of muzzle energy on moose this fall.
What did that bear square out to? Skull size? Nice bear BTW.
Curt
Is your rifle the Ruger Alaskan? What kind of velocity did you get from the factory Hornady 270 gr SP's? The published velocity is 2840 fps from a 23" barrel. I thought that with the shorter barrel I would have been lucky to see the mid to high 2600's. I had an average of 2718 fps and was quite pleased. Your results with H4350 is faster than that. That is great performance in my opinion.
I really like that Alaskan, I just recently purchased one. Fits me nicely and I do love that Hogue overmoulded stock.
Can't wait to see the results of 4600 lb/ft of muzzle energy on moose this fall.
What did that bear square out to? Skull size? Nice bear BTW.
Curt
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Thanks for the info Steve. I really like your site. I have found and used some of your data with success. What are the loads that are in bold or highlit? Shoot straight and shoot safe. Thanks for the info again.
Curt
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