Loading 6 dasher hydroformed brass?

[Pav67]

I’ve got some hydroformed bras I bought and am wanting to fireform them to my chamber.They are a snug fit on the shoulder now.Last 1/4 If bolt close is snug.Wondering if I should set shoulders back or leave.Looking for best results .All advice appreciated

 

[Damfino]

DJ's brass service hydroformed mine. Some were snug, so I set the shoulders back a couple of thousandths. Fired them first time last September in my first 600 yard F-Open match. They did well, 594/600. The 9s were the result of my poor wind reading skills, not the brass.

 

[Pav67]

Did you jam the bullets or jump after setting shoulders back?Or doesn’t it make a difference with hydroformed brass?Thanks

 

[moondog]

I loaded some VLDs with mine jammed .010 It shot lights out!
Next time I need Dasher brass, I'll definitely get DJs again

 

[Pav67]

Thanks.Any other tips or tricks?First time using hydroformed brass.planning on 29.5 grains varget with 105 hybrids

 

[Damfino]

For my Dasher, 205Ms, 32.0 grains of RL-15, with 108 grain BTs just off the lands. I thought this was a mild load, but man did it shoot. Been shooting F-TR for years and this was like shooting a laser beam.

 

[Pav67]

Damfino did you use a reduced charge first or right to 32 grains?

 

[Damfino]

It was 32 grains of RL-15 to begin with. After the initial firing it looks even more promising. I also turned the necks and the load held a very good waterline the entire match. Needless to say, I was impressed. I didn't think "fireforming" would produce such good results.

 

[ncboiler]

I loaded some VLDs with mine jammed .010 It shot lights out!
Next time I need Dasher brass, I'll definitely get DJs again

Did you lose any pieces after the first firing for splits? Just curious as I have just under 500 pieces to fire that I got back from DJ.

 

[moondog]

Did you lose any pieces after the first firing for splits? Just curious as I have just under 500 pieces to fire that I got back from DJ.

Not one from splits. I had a couple, three that had what I would call manufacture defects.

 

[comagutsa]

I'd already found a load as I had FF 100 rounds, i then hydro formed another 100 and yes you need to FL size them before you shoot them to push the shoulder back as hydro forming pushed it forward, but a snug fit is good.
I then used my full load I found of 32.4gr of varget in my freshly hydro formed cases and found no difference in accuracy between them and my fire formed loads

 

[Mastershot]

I’ve got some hydroformed bras I bought and am wanting to fireform them to my chamber.They are a snug fit on the shoulder now.Last 1/4 If bolt close is snug.Wondering if I should set shoulders back or leave.Looking for best results .All advice appreciated

I hydroform, then full length size them. Never had any problems, I shot several matches with just hydroform brass and wouldn’t even have known it from the results.

 

[ljmontano]

Whidden will tell you to bump the shoulder 10k, worked great for me

 

[DanSavage]

Whidden will tell you to bump the shoulder 10k, worked great for me

I'm guessing with .010 bump you ought to jam em.

 

[ljmontano]

I shot them just touching

 

[KenOath]

Whidden will tell you to bump the shoulder 10k, worked great for me[/QUOTE