N555 in cartridges with no load data.

[std7mag]

So i bought the remainer of an 8lb jug of N555 from a fellow member.(thanks @Fuj)
7.5lb left.

Vihtavouri claims good for large capacity cases, with smaller bore.

Thought, "Great! Should be good in cartridges such as my 25-06, 25 WSSM, and 257 Roberts AI".

Alas, zero load data for ANY of the above mentioned cartridges.
And not listed on powders in QL.

Vihtavouri claims burn rate between N160 & N560.

What are your observations with it?

 

[TTE]

What powders are you currently using ?

 

[jepp2]

What are your observations with it?

I've use it in my 6.5CM. What I typically do with a powder like this (no load data for what I want to try it in), I pick a close powder of the same manufacturer and load some mild loads and adjust the Ba value in QL. I used N550 and found the adjustment was minor. I'm not suggesting my approach for all, but it works well for me.

 

[6MMsteve]

I just bought a jug also will go through compare burn rates and cipher something out... you can use the Vihta website it has cartridges on it

 

[6MMsteve]

Use the burn rate chart in conjunction with loads of similar powders and the 550 and 160 go between them, I just bought a jug also that's how I will do it, cipher it out then go max with a couple bullets then back off, shooting 2 shot groups they ain't touching they is no good sometimes

 

[Kurz]

And not listed on powders in QL.

You need version 3.9 which does have this powder listed.

 

[std7mag]

I just bought a jug also will go through compare burn rates and cipher something out... you can use the Vihta website it has cartridges on it

Not for the cartridges i'm shooting.

 

[karrarararararar]

Gordon's reloading tool

 

[6MMsteve]

Not for the cartridges i'm shooting.

work up a load with a heavy bullet the fastest way to find max

 

[std7mag]

What powders are you currently using ?

A lot of Alliant. RL17, RL19, RL23, RL26. IMR 4831, Ramshot Hunter, Norma MRP, H414, W760.

 

[barefooter56]

So i bought the remainer of an 8lb jug of N555 from a fellow member.(thanks @Fuj)
7.5lb left.

Vihtavouri claims good for large capacity cases, with smaller bore.

Thought, "Great! Should be good in cartridges such as my 25-06, 25 WSSM, and 257 Roberts AI".

Alas, zero load data for ANY of the above mentioned cartridges.
And not listed on powders in QL.

Vihtavouri claims burn rate between N160 & N560.

What are your observations with it?

Call our SUPPORT LINE 660-460-2802 from 8am to 4:30pm Eastern time MON thru FRI and we can help you with this. Thanks !

 

[dhagerty40]

N555 was added to QL in March 2020. attached is the list of data update changes up to June 2022: