Loading .223REM with 77gr Hornady

[bigbuck007]

Dear all,

Greetings from sunny Munich.

This weekend i made new rounds for my WW-15 AR.
I was pretty shocked that most of the bullets had different over all length. My load date for N140 mentioned OAL 2.260 which my first 5 rounds did, but the rest showed OAL between 2.254 to 2.275. The later wont fit in the magazin as well.

I assume that my bullet stamp pushes allways on the same ogive so at least the inner volume in the brass is always identical. Is this a correct assumption?

How do you deal with this subject if you start making batches of 100-200 rounds?

Horrido
bigbuck

 

[Walkalong]

I assume that my bullet stamp pushes allways on the same ogive so at least the inner volume in the brass is always identical. Is this a correct assumption?

Should be close, but you are on the right path.

The position of the ogive is more important than small variations in the OAL from differing bullet lengths. Bullet lengths do vary, in factory ammo as well. Don't worry about it.

 

[bigbuck007]

Hy Walkalong

I am fan of: " bullets close to the rifling" If in a batch of 100 bullets lets say 10% are longer than the rest, then i will ruin my optimum close to the rifling, for 90% of my bullets. This makes me sad...

br
bigbuck

 

[Walkalong]

Longer doesn't matter and doesn't affect the distance to the lands for the ogive if the ogive is consistent.

Over and out.