6mm Dasher

[giumau1]

1. What neck tension is everyone running?

.2k here

2. can I just mandrel and load virgin alpha? If so what mandrel or neck tension.

I use SAC, see below

3. Should I go full size die with bushing, or no bushing + mandrel, or both like SAC.

As I said, sac alpha dasher

4. What size bushing for the die if I do go that route? Or is it best to measure this via loaded bullet diameter?

As per SAC advice being dasher short necked, .264
I start usually with .264 annealing every firing the I move to .263 after ten firing or so
.241 mandrel.
Loaded round is .269 for almost anybody here including myself.

 

[its_sean]

.2k here

I use SAC, see below

As I said, sac alpha dasher

As per SAC advice being dasher short necked, .264
I start usually with .264 annealing every firing the I move to .263 after ten firing or so
.241 mandrel.
Loaded round is .269 for almost anybody here including myself.

Thank you!! Very helpful.

I have a few more for everyone.

1. How far do you seat primers? Going to get the primal rights seater.

2. Seems like we don’t have to trim 6 dasher brass all that often. Do you all chamfer/deburr after every firing still? I’m trying to see if I invest in giraud or if a hand chamfer/deburr tool is good enough.

3. Does using a hand tool to chamfer deburr affect accuracy, seems like there is a lot of variation that can happen.

 

[Baron85]

I seat primers on a Hornady LNL progressive. I seat them hard. I don’t see a need for ultra precise seating depth.

I trim with a giraurd every firing because it’s fast and easy and re chamfers.

I used to chamfer by hand and then did with a RCBS power chamfer. Once again I doubt there is a big difference or noticeable difference on targets.

 

[giumau1]

Thank you!! Very helpful.

I have a few more for everyone.

1. How far do you seat primers? Going to get the primal rights seater.

I would recommend the primer precision gauge from bullettipping.com first. With that you can measure everything and find what you rifle likes. I prime with the 21st century hand priming tool a couple of thou below case head

2. Seems like we don’t have to trim 6 dasher brass all that often. Do you all chamfer/deburr after every firing still? I’m trying to see if I invest in giraud or if a hand chamfer/deburr tool is good enough.

Still doing it every time I am saving for a Henderson Prec gen3…

 

[MxTexas]

Guys with both Dasher and BR/BRA, do you find the "chambering a round" process (when you run the bolt and push the cartridge to seats it into the chamber) to be less smooth on the Dasher being a 40 degree shoulder?

 

[Baron85]

No, I couldn’t tell the difference between my BR’s and my dashers

 

[MxTexas]

No, I couldn’t tell the difference between my BR’s and my dashers

Thanks for letting me know.

 

[Sheldon N]

Guys with both Dasher and BR/BRA, do you find the "chambering a round" process (when you run the bolt and push the cartridge to seats it into the chamber) to be less smooth on the Dasher being a 40 degree shoulder?

No difference between my BRA and Dashers. Both are 40 degree shoulders.

 

[Lawnboi]

Anyone shoot n140?

Iv got a bunch, along with 105hybrids and alpha brass.

Was thinking of starting around 30 grains.

 

[giumau1]

Anyone shoot n140?

Iv got a bunch, along with 105hybrids and alpha brass.

Was thinking of starting around 30 grains.

I tried it with alpha and 105 hybrids but pressure came before acceptable speed. I hit it around 30.5 and 2720 mv, and sd was meh. N150 was way better in my guns. YMMV