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In my IP with an Underwood 2-43 barrel I shoot 110 grain Hornady bullet (.3075 diameter, NOT .308), 13.7 grains H110, assorted GI brass and any small rifle primer. This ammo/gun combo will shoot a sub 6" group at 200 (yes, 200) yds all day long as long as I do my part.
Jon
there's a lot of good reloading information on the CMP website.
go to "cmp forum" and click on the "m1 carbine" section. then click on the "cmp help: stock cleaning / ammo / mag id & accuracy" sticky.
No offense to anyone but, I would either go to a manufactures website,ie. IMR. or buy a reloading manual. It is not a good idea to get reloading information from a forum. You never know for sure just what kind of people respond to your request.
Just my opinion.
the Civilian Marksmanship Program is a pretty reputable source of information.
they do back up their reloading data by refering to the powder manufacturer's specifications.
lots of good stuff there. they go into detail about cartridge length, trimming cases, trouble shooting mifires, sighting in, etc.
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Here's my favorite data. There are MANY other sources, but I use Sierra most of the time! Good Luck with it and HAVE FUN!! $auto$ Thomas
I would never use the FM for load data. I believe the powder weight given are for information purposes only. Each lot of powder is/was tested and the loading adjusted to give the spec velocity.