Guesstimate on velocity

[dwhite]

I've been shooting a 180 grain lead truncated cone bullet using 3.3 grains of Clays powder with good accuracy. Book says this should be around 800 fps from my 4 inch barreled SW40VE.

I bought some 170 grain LSWC's and loaded a test batch using the same charge of Clays. I got one ragged hole for 5 shots at 15 yards. Accuracy was amazing. Recoil was very mild. Cases almost dropped at my feet. I like this load.

Any guess what velocity this is pushing? I don't have access to a chronograph.

All the best,
D White

 

[rcmodel]

I'm gonna guess 750 FPS.

rc

 

[Walkalong]

Must sound like popcorn when it goes off.

3.3 Grs Clays and a 158 Gr plated bullet gives me around 725+ FPS from a 6" .357. Very accurate, and very pleasant.

I say less than 750 FPS