Help specing a reamer

[SteveOak]

I am having an upper built and need help specing the reamer. It is an AR-15 and I need to load magazine length, 2.25". The cartridge will be 6mm ARC, Berger 6mm 105 hybrid bullets.

Is the freebore on this reamer appropriate for that bullet loaded to mag length?

6mm Arc – 267 Neck .094 Freebore​

I picked the bullet as they are supposed to be jump tolerant.

This reamer is a PT&G and is in stock. I have a few months and may be able to custom order a reamer.

Thanks!

 

[DaveTooley]

That's a tight neck reamer. You'll have to neck turn brass.

 

[LVLAaron]

6MM ARC | Manson Precision Reamers

mansonreamers.com