Retumbo

[HKMark23]

CGN's that are using Retumbo, what specific round/rifle are you using it in? Comments?

 

[dan belisle]

7 STW, 300 Wby, 270 Wby, works ok so far. I've gotten better velocities with RL25, but Retumbo is more accurate in the 270. - dan

 

[Ultramag]

7 STW .300 Rum .338 RUM

 

[dusty61]

30-378 WBY Mag, 338-378 WBY Mag, 338-378 KT.

 

[Andy]

8mm ARP

Suitable in "overbore" cartridges like all of those suggested. I too have achieved higher velocity with both RL22 and RL25, but have witnessed better temperature consistency with Retumbo (and H1000). I intentionally do up my max loads in the heat of summer because of the wild variations in pressure you can see with powders between -30 and +30 C.

 

[growler]

300RUM, 243 105gr Amax

Growler

 

[River Rat]

300 RUM, 338 RUM good acuracy and velocity

 

[catnthehatt]

6.5WSM 140 grain bullets .
Cat

 

[Miner1]

I use it for the 300 Rum and the 338 Tomahawk ( 338 Rum IMP ) H-1000 will give close to same velocities as will RL 25 but I find Retumbo gives a more accurate load with less pressure signs

 

[Andy]

I'm looking forward to trying the new Hodgdon "US869". http://www.hodgdon.com/data/US869data-01-11-2006.pdf

Can't think of any cartridge that wouldn't use a full case. Moderate pressures with Med-High velocities and claimed to be very consistent with temperature changes.

Gonna buy a pound and try it out once the thaw hits.

 

[todbartell]

I used it in my 7saum with 175 gr. Noslers

I might even try it in my 6.5 Panther with 142's (if I can fit enough of it in! - RL25 worked good in my last 260 with 140's)
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[Cappy]

270WSM with 140gr and 150gr, works good for me

 

[HKMark23]

Thanx for the feedback guys. I'd planned on using Retumbo when I work up loads for my TRG-42 .338LM. From what I've read here it seems like a reasonable choice. I had heard that because it is so slow, I may have secondary pressure concerns with the TRG's longish barrel. We'll see.

 

[dusty61]

Retumbo works well in my 338-378 with a 30" barrel. No secondary pressure concerns as you say.

 

[catnthehatt]

225 grain bullets work well with H100 in the 338Lapua, and Retumbo is not that much slower, so you should be okay.
Cat

 

[Long Range Canuck]

anyone try it in a .300 win mag and compare it to h4831sc?