JimTom wrote:G’day Gents.
Looking to convert some .222 and .223 brass to 300AAC.
Just thought I would throw it out to the brains trust to see if anyone had any hot tips for me. Have watched a few YouTube clips but would prefer advice from someone from here.
Any tips on the following appreciated:
Cutting brass
Type of lube used on cases
Any techniques used
Any sign of “spring back”
Or anything else you may think is useful.
Thanks in advance folk. Sincerely appreciated.
SCJ429 wrote:I would use Imperial sizing wax to lube the neck. It is a lot of sizing up from 224 to 308. Do it in as many stages as you can. The brass can form thin spots as it is expanded and you are including part of the shoulder into the neck. You will need to neck turn and anneal your cases. Practice on some throw away cases first before you try your Lapua or Norma cases.
Strikey wrote:SCJ429 wrote:I would use Imperial sizing wax to lube the neck. It is a lot of sizing up from 224 to 308. Do it in as many stages as you can. The brass can form thin spots as it is expanded and you are including part of the shoulder into the neck. You will need to neck turn and anneal your cases. Practice on some throw away cases first before you try your Lapua or Norma cases.
You might be on the wrong track there,223 cases are cut below the shoulder and the body necked down to 30cal to form the Blackout case not necking the 223 up to 30cal which would make it the 30 Apache I think. Winchester brass apparently forms alright to Blackout without neck turning but apparently ADI 223 brass is thick and needs to be turned to be able to form the neck.
JimTom wrote:The only reason I am bothering is that i have a heap of old .222 and .223 cases that I thought I would use one last time as 300AAC.
Given that good 300AAC brass is only $65/100 (ADI) I am wondering if it is worth the effort.
in2anity wrote:JimTom wrote:The only reason I am bothering is that i have a heap of old .222 and .223 cases that I thought I would use one last time as 300AAC.
Given that good 300AAC brass is only $65/100 (ADI) I am wondering if it is worth the effort.
Mate on a side note, how are are you finding your RARR? What projectile are you using? Any issues with feeding? Any issues with neck tension? I feel mine paired with the shorter 125 gr spitzers feeds up at a steeper than designed angle, and tends to want to knock the projectile down a little (when feeding from the factory magazine )- this is part of the reason I feel tight necks are particularly important with that gun+projectile.... just curious about your take on it JimTom.
SCJ429 wrote:Give it a go JT, it is good fun and you learn a lot about drawing brass. Even if they all end up in the bin.
JimTom wrote:Converting .223 brass to 300AAC obviously a much easier task as previously stated as it’s an exercising of necking down as opposed to necking up with a .222 case.
bladeracer wrote:JimTom wrote:Converting .223 brass to 300AAC obviously a much easier task as previously stated as it’s an exercising of necking down as opposed to necking up with a .222 case.
What do you mean by necking down instead of up? .222Rem and .223Rem are the same neck diameter - .224". you neck both up to .308" for 300BLK.
in2anity wrote:JT do you feel there is any advantage/disadvantage in using 222 brass?