250gr TTSx and RL-17

[Bootsanall]

Good day ladies and gents.
I have the above available at the moment. Has anybody done any load development with this combination in the 375h&h? I could not find any info online.
Thank you.

 

[jwp475]

A case full of CFE223 seems like a good c starting point. Maybe even Power Pro Varmint

 

[jwp475]

80.5 grains of CFE223 under a 270 TSX chronographs 2806 out of my 375 H&H

 

[Mark A Ouellette]

I checked Loaddata.com and found loads for 250 gr bullets of several brands for RL-15 and a few for RL-19.
Nothing for any 250 gr bullet with RL-17.

 

[Bob Nelson 35Whelen]

80.5 grains of CFE223 under a 270 TSX chronographs 2806 out of my 375 H&H

@jwp475
That's fair hauling ass.

 

[jwp475]

@jwp475
That's fair hauling ass.

 

[C.W. Richter]

If we were closer, I'd trade you the RL15 or 19 for the 17 (originally designed for use in the short mag cartridges, where it works quite well!) You can e-mail Alliant and ask them. https://www.alliantpowder.com/products/powder/reloder17.aspx
Found the following, which may be of some assistance: Good luck!

300 Sierra SPBT

​

Alliant/Herc Reloder-17​

​

68.0​

​

2,380​

300 Barnes

​

Alliant/Herc Reloder-15​

​

64.5​

​

2,387​

235 Speer

​

Alliant/Herc Reloder-15​

​

76.0​

​

2,934​

Similar burn speed to IMR 4350.

 

[Bob Nelson 35Whelen]

If we were closer, I'd trade you the RL15 or 19 for the 17 (originally designed for use in the short mag cartridges, where it works quite well!) You can e-mail Alliant and ask them. https://www.alliantpowder.com/products/powder/reloder17.aspx
Found the following, which may be of some assistance: Good luck!

300 Sierra SPBT

​

Alliant/Herc Reloder-17​

​

68.0​

​

2,380​

300 Barnes

​

Alliant/Herc Reloder-15​

​

64.5​

​

2,387​

235 Speer

​

Alliant/Herc Reloder-15​

​

76.0​

​

2,934​

Similar burn speed to IMR 4350.

@C.W.RICHTER
The 375H&H should do better than that
35 Whelen 63 grains of 2209/H4350 and 310gn Woodleigh RNSP

 

[C.W. Richter]

Those aren't my loads. 'Just found 'em on a reloading forum. (they were probably trying to duplicate factory ammo performance.) I always used 270 TSXs for combined PG/DG hunts (no re-sighting) and 350s for DG-only. Yes. I got the 338-06 to do 2440 w/ original Barnes SPs. But, for African DG hunting, 2350-2450 fps is just fine w/ the 350s. No reason to push it any more. RL15 or 19 would be the powder to do it with. I no longer own a 375. Gave it to my son and got a 416.

 

[SRvet]

I just ran an incremental charge test with my 375 H&H using the 250g TTSX and Reloader 17 sold to me as its identical twin Reload Swiss RS60. I got velocities up to 2889fps when the primer flattened and I called it quits. I will check the charge weights in the morning