N555 in 6.5 Creedmoor

[moe africa]

Hi all
I'm using N555 in my 6.5 creedmoor and I've gotten a load that gives me an avg speed of 2668 fps and a SD of 8.9 fps and a 0.6 moa 5 group at a 100m.
This rifle is for PRS
A few of my shooting buddies recommended that I switch to H4350 (which can become tricky to find) to get a little better efficiency or should I stick with N555 ( not very popular thus easy to source) I do have a few tins of it left

 

[TTE]

Your friends shoot what makes them happy ..... do the same

 

[mongo chicago]

Why change if there isn't any problem???

 

[WildBill3/75]

Don't listen to them. N555 is great stuff and you got a decent load.

 

[RegionRat]

Between N555 and H4350, your friends would have a hard time claiming one is vey much better than the other.

Nothing is cheap or easy to find these days. N555 is a modern powder that is well suited to your application. I don't know a compelling reason in terms of performance since N555 is also temp stable.

If you already have it, and a load that is working, that counts for more these days. You would end up spending more rounds to make the change, to end up in essentially the same place.

 

[whatsupdoc]

What barrel length, bullet weight and powder weight are you using?

 

[Fuj]

At 2668 fps, your a bit slow and have 2 more good nodes above
that. The little I worked with V-555 tells me its too bulky of a powder
for the Creedmoor. H4350 and Reloder 16 are the top 2 powders
for the 142 SMK. My top load was 42gr of R-16 with the 140 RDF
at 2780 fps in a 24" 8 twist Criterion barrel.

 

[bulaman]

Where do you find N555 easy to source?

 

[Bemoni]

Stay with the 555, it's a good powder and from what i have learned, here in the cold north, it is very tolerant for temperature changes.

It wasn't a winner in my old ( and rather short ) .260 rem barrel, but the LW i'm running now, are showing promising groups and velocities.

I am in the process of making the final load for the new barrel and the 555 looks like a worthy contender for the job.
More to follow.

 

[whatsupdoc]

While N555 seems to work fine if you can source N550 or H4350 you may get better
results using a bit less powder.

 

[jepp2]

The little I worked with V-555 tells me its too bulky of a powder
for the Creedmoor. H4350 and Reloder 16 are the top 2 powders

This ^^^^^