20 dasher 40vmax

[chuckshooter]

I'm thinking of building a 20 dasher (norma brass dasher). Not because I want or need more speed but, I've got a couple of 6 dashers sitting here doing nothing and thought, why not. I just got back from shooting prairie dogs with my 20br and love the gun. I will definitely build another 20br, but I want to find a way to use this dasher brass. I only want to shoot the 40vmax with these because I have sooo many on hand. Most of the info posted on this site focuses on 55gr berger. Is anyone else shooting a 20br or 20 dasher with 40vmax? The 20br is already at 4200 fps and With the 20 dasher I might end up with more speed than I need or want, which could mean less barrel life. I appreciate any thoughts on this. thanks

 

[Scooby-93]

What are the specs of your 20BR?

 

[MDT6BRA]

I can’t imagine a barrel lasting long enough to use up much brass with those speeds.

 

[chuckshooter]

What are the specs of your 20BR?

MY load is 29.5 benchmark cci450, 40grvmax , Lapua brass, I'll look up my reamer specs

 

[17VLD]

My friend Doug from Montana and I were talking with Greg Tannel in his shop about the idea of building a 20 Dasher and we both decided to each build one so he ordered a reamer.I went with a 9 twist to shoot the 55s and Doug went with an eleven twist to shoot the 40 Vmax a bit faster than the 20br. We shot some rockchucks on a ski slope in Montana in the summer and Doug remarked on how upset the tree huggers would be if they knew what we had done to their cute little varmints. His Dasher with 40 vmaxes was very effective out past 500 yards . To be totally honest I don't remember how fast Doug loaded his 40s but he was fairly conservative and the load you have in your 20br sounds about what he was shooting at varmints.
Depending on the twist you choose I'm sure you can get up to 4300/4400fps. I'm sure a twelve would work at Dasher speeds and the accuracy would be very good too. Definitely a fun one to build,may not be the most practical but definitely will destroy a chuck like nobody's business.
Matt