2022年2月15日 · I have used both in my 300WM with good success. Using 210 and 215 Berger’s, Generally running 2890-2910 with 76gr H1000 and 2960-2980 with 79gr Retumbo, both max, <.5MOA/<20ES. I have found similar relationship between the two powders in my 6.5x284’s, but using proportionately{by about 20gr), lower charge weights.

2021年2月10日 · 57.0gr of Retumbo and a Berger 156 EOL shot under 1/2 moa at 400 yards in my 23.5" Proof barreled rifle. FWIW, I was using Hornady cases and Fed 210M primers. Bullets were loaded .056" off the rifling.

2011年1月22日 · Retumbo is exceptionally accurate and a great powder for this caliber when using the 140 VLDs. With it I have taken a couple of dozen deer, antelope , and coyotes between 600 and 1100 yards with this load, My magnums have been collecting dust.

2024年9月17日 · I think it was around 74.0. The Hodgdon site calculates starting at 70.7 as the start, and 76.4 as the max. I found that start to be WAY low, and the max to be overly conservative. I shoot 77.4 of Retumbo, and routinely hit a 1-mile target out of my Barrett MRAD and MPA-BA ... both rifles love this load. No pressure signs, just great results.

2008年2月24日 · I use Retumbo in my 300 WM and get excellent results. My load is 79gr of Retumbo, Fed215, 210 Berger Hunting VLD's, .010" off the lands , Norma brass. I get 2902FPS and ES of 8FPS out of my 26" barrel. I have gotten good accuracy with the Berger 185's using 82 gr of Retumbo but did not measure the velocity. I would expect it to be 3050-3100.

2012年2月1日 · I have read on a few sites that the 25-06 is easy to load for and will take many diffrent powders well. I also found many to say that the H4831sc was a great powder for the 25-06 however many felt it worked best pushing bullets under 100gr and that Retumbo was a better choice for the heavier bullets of 100gr and larger. What say yal? Thank's, Brad

2012年8月9日 · The ES's are generally pretty wide and with H1000 (which is my number one choice) I can usually get very close to or the same velocity as Retumbo. With H1000 it seems much easier to get low ES. Retumbo has the infamous pressure spike at or near max load that can suddenly send your velocity up 75-100 fps.

2008年11月28日 · I just started working on a load for the 160 gr ab and retumbo. I havent finished working on it due to a closure of my range for winter but so far 68.5 gr retumbo and a federal gm215m primer seated at 15 thou off lands and grooves gives me average velocity of 2920 fps. the gun is a rem 700 pss with a 24 inch factory barrel. groups at about 3/4 ...

2018年12月28日 · I just reloaded some cartridges for 300 win mag with retumbo powder. I followed the hodgdon website recommendations for the load. 220 gr HPBT Sierra MatchKing is the projectile. Winchester large rifle magnum primers. I used a charge of 77 gr and had a couple primers blow out. I backed down to 76 gr but the primer still showed cratering.

2003年3月18日 · I worked up a load with retumbo for .338LM using the 300MK's. I'll tell you my H1000 numbers for comparison. best accuracy loads H1000 92.0g 2780fps 26inch barrel Retumbo 91.9g 2800fps 26inch barrel seated on the rifling. With H1000 the bolt is just slightly sticky. With retumbo less pressure signs.