6 Dasher range time

[cloverleaf]

So dumb question. I was watching some "Back fire" on you-tube this morning (shame on me..) and the guy was saying that the Dasher is an under appreciated cartridge for hunting. Does any body use it for Deer etc? Havent looked at the numbers but accuracy is obviously there....

 

[TexasLife]

I really want a 6dash or 6br(bra/brx) for an ar15 to have a small frame to go with my ar10 243win . Now I need to decide on which 22cal for the larger frame to companion the 5.56

 

[jimbires]

That is a cool story Jim. Is that Bobby Hart of Hart Custom Rifles? I have been itching to shoot the Dasher since last year, don't be surprised if I have a F Class Dasher built soon, but haven't decided yet. I love the tactical stocks such as the A5 McMillian that the Dasher is on currently. I have several calibers on the A5. Some people might think I'm strange having a 1.250" 30 inch barrel on an A5 which most people use 22-26 inch barrels. I'm competing with the F Class guys that are using flat fore end stocks like the Kestros, etc. So far I'm the only one there using a tactical rig. Can't wait till Monday to go do my 2nd range test. Hopefully get a tune I can rely on to fireform all my brass.

Mark , yes it is R W Hart and son gun shop in Nescopeck PA . there is also Hart rifle barrels in NY .

 

[TackDriver284]

Lots of brass and components is beneficial when you shoot F, for sure
600 Yard?

Yes Sir.

 

[TackDriver284]

Ran some seating depths from touching the lands out to .045" off the lands in .005" increments with the 31.6 grain powder charge, all groups are fantastic across the board with same POI, the last two groups was sighted in, the last group needed one more click to zero. I have 600 yard test practice on Wednesday morning. Winds was right to left around 20 mph late morning, it did not seem to bother that little bullet much. I settled , for now to fireform, at 31.6 grains Varget at 2880 fps. The 2nd group is .005" off the lands and I like that itty bitty group. I'm surprised that seating depths did not have any effect to change patterns that much. I am seeing slight ejector marks on the head of the brass, my guess is that its a minor headspace issue, since virgin brass differs from fired brass headspace by .007", so my guess is the brass is slamming back against the boltface causing this slight ejector mark. I am loading up 10 rounds at .005" off the lands and 10 rounds at .010" jam to try at 600 on Wednesday. I'm trying this jam to see if the ejector mark goes away, that would keep the brass head snugged up against the bolt face while firing. I still have 250 pieces of virgin brass left.
I ran the data on Quickload to make sure on the pressure and I am not at pressure at all, its a mere 52k psi pressure and max is 65k psi. Hopefully once all brass are fireformed, I'll increase the speed to around 2950 fps or so to around 32.5 grains Varget or less, its a wait and see if that will happen, and without ejector marks. That will help with wind at 600 yards, or 1000.

 

[RL338]

Seems the Hybrids aren’t affected much by seating depth in that barrel. That might pay off later down the road as erosion of the throat starts.

 

[DrMike]

Clearly, the firing system wants to work for you.

 

[TackDriver284]

Headed off to the club yesterday morning to try out the Dasher at 600 yards, I only had 10 rounds of .005" off the lands, and 10 jammed .010"
POI on the jammed bullets was different from the .005" off group , it was to the left and low, a few clicks and it was right of the bull, and one click left to center and I started the test with 7 rounds left, its not a bad group using virgin brass, is in a pretty consistent circle. Only thing I did not like was my 30 year old Protektor rear bag which has a leather bottom and it has a bulge on the bottom which causes it to rock a little causing little movement at 600. I'm checking with xphunter to see about those SEB rests. Prior to that I was eyeing the F Class Protektor rear bags, not shabby at all. Lower stock is 1 inch wide, so I need a 1 inch spacer or 1/8 inch narrower between the rabbit ears.

 

[JD338]

Nice shooting!

JD338