Product Overview
This magnum, extruded powder was designed expressly for the really large overbored cartridges such as the 7mm Remington Ultra Magnum, 300 Remington Ultra Magnum, 30-378 Weatherby Magnum, etc. Retumbo adds 40-100 fps more velocity to these cartridges when compared to other normal magnum powders.
In addition, it is an Extreme Powder, making it perfect for big game hunting under all types of conditions.
Made in Australia
Available in 1 lb. and 8 lb. containers.
Reviews
15 Reviews
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5 Hodgdon Retumbo
Posted by Roy Pacini on Dec 24th 2021
Best powder for overbore magnums. Superb accuracy.
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5 One hole groups with multiple rifles
Posted by Kevin on Dec 17th 2021
Retumbo is the unicorn of powders, works well in several 28 Noslers, a 300 Win mag, and 6.5 SAUM I’ve built. 4 rifles that I own shoot one hole groups at great velocity with this powder.
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5 Retumbo
Posted by Willie on Oct 8th 2021
Super accurate in my 28 Nosler with 180 and 195 grain bullets. No pressure spikes in warmer weather or from different lot #'s.
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5 Retumbo
Posted by Matthew Hopf on Apr 28th 2021
Extremely consistent powder, from lot to lot, year to year. I’ve used the same load in my go-to hunting rifle for 15 years. No changes weatherby 30-378, 32” bbl,102.5 gr Retumbo
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5 powder
Posted by jed mcdaniels on Apr 25th 2021
Great product from a great company. Looking forward to many more experiences with them in the future
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5 Retumbo
Posted by Mike H on Dec 27th 2020
Temperature stable and gives low ES in all magnum loads tried with heavy bullets.
