N555 or H4350 in 6.5?

[DngBat7]

Have not shot my 6.5 in a while. I run 6.5 140 Berger hybrids. Always used h4350 in the past with good results, but now that n555 has been out for a few years I was just wondering how it compared? Velocity, consistency, etc…..

Thank you

 

[prone.life]

My experience with the two was N555 required 2-3 more grains to achieve same velocities as H4350 using 136 Lapuas. I chose N550 for higher velocity with less powder than N555. I switched back to H4350 after N550 was exhausted bc I had a lot of H4350 and it works for my loads. Here's some sample velocity data with N555, N550 and Varget.

 

[Bill Norris]

VV-N555 does well in my 260AI and as opposed to the H-4831 loads it seems to be about equal in charge weight.

 

[DngBat7]

My experience with the two was N555 required 2-3 more grains to achieve same velocities as H4350 using 136 Lapuas. I chose N550 for higher velocity with less powder than N555. I switched back to H4350 after N550 was exhausted bc I had a lot of H4350 and it works for my loads. Here's some sample velocity data with N555, N550 and Varget.

View attachment 1671561

Thanks for the info

 

[SeabeeKen]

Test both and let the target decide

 

[JMayo]

Aren't the 555 powders very corrosive ?