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So I started playing with retumbo this spring in my 7mm rem mag and I have found any bullet in the 150-154 range will shoot tiny little groups! Anyone have similar results with it?


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It is all I use in the 300 RUM. I have about 10 pounds in reserve, which should last me a few barrels. Although at 96gr per pop, I guess it will drain quickly...
 

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Geez! I hope I didn't pick the wrong powder... Just got a used Tikka 7 mm mag. Loading 160 Nosler Accubonds, I got Hodgdon 100v Hybrid powder. It meters well, I started out at about 85% of max. We'll see I guess.
 

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Can anyone give specifics on this powder in the old 300 win mag? Curious to know.
 

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Works great with any large capacity case with heavy bullets. I used it in 300 Win Mag with 200 grain bullets, now I use it in 7mm RM with 175 grain bullets and 25-06 with 115 grain bullets. Super accurate.
 

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Case: Winchester Twist: 1:10" Primer: Winchester LRM, Large Rifle Magnum Barrel Length: 24" Trim Length: 2.610" Bullet Weight200 GR. NOS AB Starting Loads Maximum Loads Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure Hodgdon Retumbo .308" 3.340" 73.0 2,703 44,600 CUP 78.0C 2,872 52,100 CUP Bullet Weight200 GR. NOS PART Starting Loads Maximum Loads Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure Hodgdon Retumbo .308" 3.340" 79.0 2,798 45,700 CUP 84.0C 2,962 52,300 CUP Bullet Weight208 GR. HDY A-MAX Starting Loads Maximum Loads Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure Hodgdon Retumbo .308" 3.420" 74.5 2,717 50,300 PSI 81.0C 2,915 61,300 PSI Bullet Weight220 GR. SIE RN Starting Loads Maximum Loads Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure Hodgdon Retumbo .308" 3.340" 76.0 2,646 44,400 CUP 81.0C 2,810 52,400 CUP Bullet Weight230 GR. BER TACT Starting Loads Maximum Loads Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure Hodgdon Retumbo .308" 3.395" 71.6 2,520 44,700 PSI 77.0C 2,714 55,200 PSI
 

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So where are you guys getting it? I haven't seen any for 3 years. You must have bought a train load of it before the shortages happened. My 300 ultra and 7stw will chew through a keg in a year if I shoot them at all.
 

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Must be nice. The local gunshops up here in Hicksville don't carry squat. Only one with a good selection is gander mountain they think by there prices they have gold and lately are sold out of everything as fast as they put it on the shelf.
 
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