Need Input - Think I May Have Made A Big Mistake

[Critter1955]

Ok, I guess I did my biggest screwed up in years reloading. I didn't even realize I got the wrong dies and I resized 6.5 creedmoor cases with 6mm die are they junk? I measure and it appears they are not really different except for the neck being pushed back. They all fit my Wilson case gauge but are a hair below the minimum level on the gauge. If they are junk this is a costly mistake I'll not do again!
Thanks for any input. ASAP would be great as I was going to load these cases, and they are brand new Starline.
Would annealing help for the fire forming? I planned on using a 35.3 charge of H4350 and a Speer 140 Hot Core FB bullet.

 

[mcfred]

Assuming the heaspace isn't too different, you can anneal the necks and get/make a tapered expander mandrel and neck them back up to 6.5mm. Once you do that I'd anneal them again for good measure and check the trim-length just in case. It's not a lot of work done to the necks but you didn't help their service life. You should be fine.

If the heaspace is significantly different, then you can make the tapered mandel oversized so you end up with a false shoulder when you tun them through the proper dies then fire-form them back to where they need to be for your rifle. No big deal.

Another thing is maybe you could sell them to someone who shoots 6mm Seymoor and purchase new brass with the proceeds. It might be worth the price in components and barrel life to fireform it all back to where it needs to be. (I wouldn't use H4350 to fireform there are cheaper powders to do that).

 

[Critter1955]

Thanks that's relief! I did run them through a neck expander and only messed one up. I will anneal them and see what happens.

 

[El Cid 92]

They'll be fine... when there was a brass shortage. I would take 6 Creed brass - anneal - expand neck to 6.5. They worked fine.

Andrew

 

[bschneiderheinze]

Just shoot them with 6mm bullets the necks will expand. Just joking my son did send a 6xc down a 6.5 creedmoor at the range one day and still hit the target but I wouldn’t recommend it. You reload long enough your going to make some mistakes the bad ones are the ones you don’t catch like significantly overcharging.

 

[918v]

Just shoot them with 6mm bullets the necks will expand. Just joking my son did send a 6xc down a 6.5 creedmoor at the range one day and still hit the target but I wouldn’t recommend it. You reload long enough your going to make some mistakes the bad ones are the ones you don’t catch like significantly overcharging.

+1

 

[Critter1955]

After carefully running the cases through a 6.5mm expander die, the dimension went back to .2625 I.D. Think I should be ok. I annealed all the cases to help. My new Bench Source annealer is the cats butt, but (no pun intended) I need to get at least a 5lb. propane tank. Didn't really want a regular 15lb. tank but the 5lb. are more expensive for just an empty tank than the larger ones already filled (at least here in PA.
Anyway, thanks for the thoughts on my cases.

 

[Milo 2.5]

Just shoot them with 6mm bullets the necks will expand. Just joking my son did send a 6xc down a 6.5 creedmoor at the range one day and still hit the target but I wouldn’t recommend it. You reload long enough your going to make some mistakes the bad ones are the ones you don’t catch like significantly overcharging.

How far away was the target? Does not seem feasible that the bullet would travel too far.