180 bergers in 7 ultra

[harfman99]

hello

I am building a 7 ultra with a 31" tube would anyone know how fast i would be able to push the 180's? I have a whole bunch of 168's in 7mm but was wondering if i would gain much with the 180's.

Thanks

Chris

 

[MontanaRifleman]

My guess would be in excess of 3200 fps. I'm expecting 3050 - 3100 out of a 7mm Dakota with a 27" barrel.

 

[MagMan]

I clocked 3350 with 100.3 grains of US869 and a 30" pipe with the 180's and that was an abolute max load.

 

[davewilson]

only tried 872 powder and ran around 3250 with a 30" barrel.