N565 - 300 RUM and 300 Win Mag

[cb4128]

Does anyone have experience loading N565 in a 300 RUM and 300 Win Mag? I have some that I haven't tried yet, and it seems like it's the correct burn rate for these sized cases - similar to Retumbo, H1000, etc.

I'm trying to find a starting point for both rifles with the following bullets:

300 RUM - 230gr Berger OTM's

300 Win Mag - 215gr Berger Hybrids

Thanks for any help!

 

[cb4128]

Ttt

 

[Recon$$]

I do in the 300 PRC with 212's, little bit slower then Retumbo but close.

 

[cb4128]

Ok cool, how do your loads compare to Retumbo as far as grain weights?

 

[Recon$$]

I'm getting a little more Retumbo in, there's plenty of volume left for more, no compressed loads. I didn't push it on either powder just shot until slight pressure signs which were book max. My most accurate load with 565 was 76 gr @ 2840. Retumbo in that velocity node shot a very similar group though I'm still trying to tweak a load at 78.5 gr which gets me 2950 that showed potential. Let me check my notes this evening on where I got pressure signs with 565. I know I did with 79.0 gr of Retumbo. I want to say it was 77.5 with 565 but let me check later. 24" tube