N560 for 6.5 PRC / 7 SAUM

[jonnyviceroy]

Just wanted to share a little bit of my recent findings and testing with this powder. I couldn’t find a whole lot of information on it as it is not currently the most popular powder choice. I think a lot of that has to do with vitavhouri and not claiming it to be temperature stable. Anyways, I had been shooting H1000 out of my 6.5 PRC and a buddy shooting out of 7 SAUM. Both of us struggled with bad es and sd, and after playing a little bit on Gordon’s reloading tool determined that it’s probably too slow of a powder for our shorter barrels. According to the burn rates this powder was the sweet spot. My only concern was just how temperature sensitive it was. I looked high and low and only found one bit of solid information on it and temperature sensitivity on another forum. So I constructed my own little tests trying to simulate both the rifle and ammunition at different temperatures to determine muzzle velocity shifts due to temp. My results were quite in line with the ones I had found online. With the migration in velocity being less significant in my own personally realistic hunting temperatures 0- 60* F I think this will prove to be a great option. And while yes it’s not the most temp stable I think if it can be calculated or accounted for with most ballistic calculators now anyways then it’s not a worry for me. I know I didn’t go into great detail on my rifle specs or test method and would be happy to answer any questions but I just wanted to share my findings because I couldn’t find much out there on this. I think it’d prove to be a great option for lots of guys with shorter barreled magnums (6.5 prc, 7 SAUM etc) to get great velocity’s as well as much easier to find in stock.

 

[huntnful]

I've been shooting N560 with a 210M in my 6.5 PRC's with great results. It produces good velocities with bullets from 124-147gr with anywhere from a 60gr. charge for the lighter bullet, to a 55gr. charge with the heavier bullet. Currently shooting 56gr. behind a 140 berger to get the first firing on my brass and speed up the barrel. Had an ES of 20fps over 15 shots on new brass and new barrel. And it is definitely available more often!

 

[jonnyviceroy]

I've been shooting N560 with a 210M in my 6.5 PRC's with great results. It produces good velocities with bullets from 124-147gr with anywhere from a 60gr. charge for the lighter bullet, to a 55gr. charge with the heavier bullet. Currently shooting 56gr. behind a 140 berger to get the first firing on my brass and speed up the barrel. Had an ES of 20fps over 15 shots on new brass and new barrel. And it is definitely available more often!

Glad to hear man! I’m shooting it out of a 6.5 prc with adg brass, 210m, 53.5 gr N560 and 147 eldm on those tests. Being able to determine and calculate the temp sensitivity factor makes it a very legitimate option in my opinion.

 

[huntnful]

Glad to hear man! I’m shooting it out of a 6.5 prc with adg brass, 210m, 53.5 gr N560 and 147 eldm on those tests. Being able to determine and calculate the temp sensitivity factor makes it a very legitimate option in my opinion.

Definitely dude! I'm shooting peterson brass, so similar quality. I also have a pile of 4831SC but I got it after developing with N560 so I didn't feel like testing it out yet. Looks like it has great temp stability also.

 

[ID_Matt]

I have just started testing N560 with 162's in my 7 saum. Has been extremely accurate over several powder charges. Like you mentioned, in the typical hunting temperatures it does not appear to be an issue with sensitivity.

 

[huntnful]

I have just started testing N560 with 162's in my 7 saum. Has been extremely accurate over several powder charges. Like you mentioned, in the typical hunting temperatures it does not appear to be an issue with sensitivity.

Good to know! Good speeds and ES also?

 

[ID_Matt]

Good to know! Good speeds and ES also?

In a 22" tube it maxed out around 2935 FPS and shot well at 2775, 2825 and 2865. Have 25 loaded up at the 2865 mark (62 grains) and am going to test further. Initial testing cross the 3 powder charges were all under 0.5" for 5 shots. ES on the 2865 node was around 16 FPS I believe

 

[huntnful]

In a 22" tube it maxed out around 2935 FPS and shot well at 2775, 2825 and 2865. Have 25 loaded up at the 2865 mark (62 grains) and am going to test further. Initial testing cross the 3 powder charges were all under 0.5" for 5 shots. ES on the 2865 node was around 16 FPS I believe

That’s excellent!

 

[jonnyviceroy]

I have just started testing N560 with 162's in my 7 saum. Has been extremely accurate over several powder charges. Like you mentioned, in the typical hunting temperatures it does not appear to be an issue with sensitivity.

Absolutely! Especially in a regular temp range. But now that my data lined up with the other I came across I feel pretty confident too that any shift in velocity can be accounted for with all of our calculators and such. Makes me feel fully confident in it regardless of conditions forsure!