6mm Dasher

[alan98]

Figured I'd post this to see if anyone on here uses the 6 Dasher. What reamer works best? I plan on using 105-108 grain bullets. I know there are a few different ones, and I have a lot of reading to do yet. Turn neck vs. no turn neck, etc. Barrel twist? Thanks for any help.

Alan

 

[Sonic Crack]

Lots of good info here 6mmBR Cartridge Guide

 

[bward]

.104 freebore and .272 neck. 8 twist barrel will work fine.

 

[JRWALLSIII]

^^^^
Perfect reamer specs

 

[6brshooter]

.272" was the old dia for no turn nk with the old cardboard boxed lapua brass. The new blue box brass is .265-.266 loaded nk dia. I believe that .269" is the reamer nk for blue box. I had a br rifle built during the brass change and mine is a no turn .272, unfortunately all my brass is the new blue box. No real accuracy lost just have to size brass more. Dave Kiff at ptg would be the guy to call, might want to pick up some boxes of brass and verify nk thickness.

 

[bward]

Blue box can still be as thick as .268 loaded (thats what the lot I have now is). There's no reason to make a field rifle have any less clearance than .003'' at the minimum.

 

[6brshooter]

Have to measure mine, got a couple different lots of blue box. I know several boxes measured .265" loaded. My other br's are on savage actions with prefits, not sure what nk they are, more than likely 272". To the OP, why a dasher, the speed? I can get 2925 with a straight br case and 105 hybrids. Easy peasy, no fireform or other garbage. From the box to the seater die and done. Feeds from an ai mag alot better then the dasher.

 

[wnroscoe]

For Berger 105 VLD's my no turn neck reamer for the older paper box brass was .103" freebore .272" Nk. The Blue box brass changed a couple of times. I believe the reamer to get now is still .103"/.104" but with a .269" neck. Check with Dave Kiff at PTG as he has a ton of current info from numerous smiths.

I'd spin up a FF barrel too and save wear on your match barrel while making brass.

 

[alan98]

Have to measure mine, got a couple different lots of blue box. I know several boxes measured .265" loaded. My other br's are on savage actions with prefits, not sure what nk they are, more than likely 272". To the OP, why a dasher, the speed? I can get 2925 with a straight br case and 105 hybrids. Easy peasy, no fireform or other garbage. From the box to the seater die and done. Feeds from an ai mag alot better then the dasher.

I figured the Dasher would have a little more for shooting at 1k. Not real reason though, I guess just that I don't mind fireforming the brass, and from what I've read, the Dasher still has excellent barrel and brass life also so I figured why not go with it. It's just confusing as I've read so many different recommendations as to FB length for the heavier bullets, and NK size. I don't mind turning the necks if anything is to be gained by going that route. Still have some reading to do.

Alan

 

[JGorski]

Like Jason says, that's why i figured the 6 Creed would be good, it shoots under an inch at 300yds.
You don't need a gun that can shoot .1" groups at 100 yards to be competitive at 1000 yards. Long VLD bullets often do not shine until 300yds since they may not fully stabilize inside 100 yards. The 300 yard-line is where you can assess whether a gun has what it takes to do well at 1000. If you can group at or under 1" at 300 yards, you'll be in the running at 1000 yards. But to reach this level, you need ultra-consistent ammo, proper shooting technique, and a rifle that shoots straight. Very, very straight.

 

[bward]

Who said anything about a Creedmoor? Didn't you get beat by the BR based cases in all of your matches this year? There's a reason that's what everyone uses.

 

[JGorski]

Who said anything about a Creedmoor? Didn't you get beat by the BR based cases in all of your matches this year? There's a reason that's what everyone uses.

Why, because Alan asked me about the creedmoor. Not everybody with a 6BR beat me the last match.

 

[bward]

Must not have been in this thread so why would you bring it up like everyone knows what you are talking about. Not everyone with a 6BR or variant may have beat you, but from what I remember a lot of them did...

 

[JGorski]

Must not have been in this thread so why would you bring it up like everyone knows what you are talking about. Not everyone with a 6BR or variant may have beat you, but from what I remember a lot of them did...

Only the guys that had the fullblown BR rigs that have been shooting 600BR for the past umpteen years. This was my 1st full year with my rifle. 8th place isnt too bad, I guess. There's always next year.

 

[bward]

I wish you the best of luck next year, but it gets old that you can't let one thread about a 6mm anything go by without writing something about your Creedmoor, even if it doesn't apply at all. The BR cases will always be the standard for long range BR. There's a reason for that.

 

[Jig Stick]

Call Dave Bruno Precision Rifles in Dayton PA. One of his 6 Dashers just set the 1000yd benchrest world record, shooting an agg score around 3inches. He's an awesome gunsmith and great to work with.