How to make a pellet sizing block

[fisherdude]

I have seen a desctiption on how to build a pellet sizing block using different size holes.  My question is "How do I drill different size holes .177, .182, .185, etc. ?"  Are there drill bits in these sizes?  How do I make these holes?

[kiwi]

Hi.. drill the  hole undersize then use a small tappered reamer to make holes of diffrent Dia's.
The deeper you drill though with the reamer the bigger the holes will become.
You can also get a set of number drills these a scaled in hole area not Dia as standard drills are.
I use to have a set for drilling carb jets, I don't think the set I had would have gone up that
big but you should be able to to get a set in the size range you require.

[SDale]

You can get drills the same size or pretty darn close from Machinery & Tool suppliers like Enco.
If you've got a set of calipers, take a quick measurment of the pellet and go to the drill index.  

This is where I get my Drill Bits: http://www.use-enco.com/CGI/INSRAR?PMSECT=0000000618

[kiwi]

Hi..The drills link in SDale's post are number drills.....looks like you would be looking at the  #10  #11  #12  #13 & 3/16

[melloroadman]

Mine starts at# 60 or.040 and ends at 1 or .228 Marvin

[RCnMo]

Harbor freight usually runs that 60 piece set for about $10. They're decent bits as long as you're not drilling anything tougher than mild steel.

[fisherdude]

Looks llike I need to get me some new drill bits and maybe a tapered reamer.
Thanks, I will be getting on this.