Reaming a chamber for the first time; I have a good question about it.

exseparatist

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Hello there,

Soon, I will ream my first barrel, a .22 LR match chamber, to realize an old personnal challenge.

My lathe set-up is ready and even I made my own floating reamer holder. I just need to order my reamer.

My question is:

Do I absolutely need a rougher reamer for the .22 LR or if I could only use the finishing match reamer ?

It is sure that the dial gauge will be installed, I will ream very slowly, I will often remove and clean chips and will use plenty of oïl.

I was wondering if the use of a rought reamer before the finishing reamer would be really needed only when we form a large centerfire chamber. The chamber of a .22 LR is only few .001'' over the bore diamerter.

Thank you in advance for your answers

Ex
 
You really only need a roughing reamer if you are reaming A LOT OF CHAMBERS. The "rougher" just saves wear and tear on the finisher reamer.
 
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