300blk brass thickness question

[Guns4545]

Will FC or FC 11 NICKEL BRASS work for 300blk? I have a bunch I'd like to convert. Also have some speer. If anyone has a chart for the brass that works that would be great as well. Thanks for the help.

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[Benny]

I don’t have copy and paste or link identification capability for a couple of days. I’m sure someone will do it before I can.

In general a wall thickness of .013” is real close to being a problem.
Usually .014” is too thick, .012” is fine.
Problematically with a couple of manufacturers their brass may be made in differing locations, having differing wall thicknesses, Federal is one of them.

[Guns4545]

I don’t have copy and paste or link identification capability for a couple of days. I’m sure someone will do it before I can.

In general a wall thickness of .013” is real close to being a problem.
Usually .014” is too thick, .012” is fine.
Problematically with a couple of manufacturers their brass may be made in differing locations, having differing wall thicknesses, Federal is one of them.

Few people I've talked to said federal is fine. I will make a dummy round and test it out. I have a Sheridan case gage to verify the case. I also do have Speer brass. I'll post how it works out. Just waiting on the Jig should have it next week.

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[Benny]

It is reputed the “newer” Federal brass “may” be thicker.
Based on the picture, it appears you have both the old and new on hand, cut and chamfer/debur each of those and see.

I have no reports on the Speer.