Fire Forming 6 Dasher

[500Stroker]

I am new at this.
I just had 100 Lapua 6BR brass Hydro formed to 6 Dasher and now I need to fire form them. Can I just load them up as regular target rounds using Varget and Berger 108 gr bullets? Or should I down load them with lighter powder load and/or lighter bullets?
I shoot a no turn Dasher, so I dont plan on doing anything with the necks. I do plan on running them thru a full size die before shooting them.
Any help would be appreciated, keep it simple please.

 

[jrm850]

I have no experience hydroforming so take this with a grain of salt. It's just an opinion for conversation's sake.

If your shoulder is fairly sharp and the shoulder is pushed forward to where you want, I would start working up loads now. My thinking is that every trip those 100 cases make through your chamber equals about 8% of your barrel life. You should still learn valuable info about seating depth, and I doubt that a powder charge that shoots well in the 95% formed case will be too far off from your final load.

I started with Dashers at the peak of the hoarding, so I ended up working up loads for 3 different powders and several different bullets depending on availability. My barrel was middle aged by the time I settled on a load and had fireformed my cases. Looking back, I wish I would have kept the first load that was a consistent .3ish with a low ES, paid for the overpriced components and shot matches until the bullets rattled down the tube. My wind reading skills needed way more work that that extra 100/1000 smaller groups.

 

[Terry]

Load & shoot them. Regular Loads.

 

[potatoe]

^^that's what I would do

 

[fultonbig9]

I hydro mine also,and yes i shoot my normal charge when i shoot next time to fully form. Joey

 

[DJSBRS]

Load them as they are as long as they fit your chamber. You may need to full length resize if they are a tight fit.

Hydro-formed brass with rounded radius on the shoulder should take a standard load if the brass fits your chamber.

DJ

DJ's Brass Service

 

[CaptainMal]

I would shoot them "regular" but ...

Compare the shoulder (headspace) size of a case fired in the chamber to one of those hydroformed ones. If it's good - go for it.