N555 powder in the 6.5 CM

I always wanted to try it, but heard it was slower than H4350. 555 is popular for the competition folks, usually with higher capacity calibers than the 6.5cm.
 
I used it with 140gr ELDm in my 20" Tikka CTR 6.5cm, 43.9grs N555 did 2690 fps & 42.7grs did 2613 fps (2.87" OAL / .112 jump / Alpha brass / F210M)

To compare, I usually use H4350 41.1grs which gives 2560 fps
 
Sako S20, Peterson SRP, Lapua 139gr Scenar (GB458), 45.0gr N555, Federal Match Small Rifle Primer
About 0.003 jump, so loaded longer OAL than the book value, yields ~2800 fps muzzle velocity and shoots about 3/4 MOA (verified at 500m)

Both mag length and freebore allows for OAL noticeably longer than the book value, so that definitely helps
 
I use N555 in my GF Creedmoor, shooting 140gr Hybrid, Lapua SRP, CCI450. Get SD of 3-4 for a 10 shots group. 1/2-3/4 moa
 
Just started working with N555, but I'm having some excellent preliminary results in my T3x (24" CTR stainless barrel) with Hornady 147gr ELD-Ms.
It's getting me an average of 2671 fps with 42.5gr of N555.
 
You must log in or register to reply here.
Back
Top Bottom