303 / 308??

OK dump it Yoda will.

Thanks for the advice fellas,it is only one round and it does look a bit funny,though not real obvious.
I wasn't paying enough attention when I grabbed a box of 150 grains to load one 308 that had strayed.Brain was not sufficiently engaged at that moment.As soon as I loaded it,I knew it wasn't right.

I will pull it..and there will be no You Tube video of "Hold my beer,watch THIS!"Sorry...but again,thanks for affirming what I already know.

As a lazy man,I might have fired it.And I might have gotten away with it.

BTW,I stand up for my M305 reliability and quality too.If not,I would have dumped it.
 
I once had a box of Hornady 150 grain spire point interlock bullets for my .308 Winchester.
One got stuck in the die when I was seating the bullet. I pulled it, and measured, and it was a .312" bullet meant for the .303 Brit! They look identical, but one somehow got in the wrong box at the factory. This was from a new, sealed box of .308's, and I have never bought Hornady .312 bullets so the mix up did not occur at home. I wrote Hornady and gave them a "heads up" so they could check their QC on that lot number. They wrote back and said thanks, they make xx,000 bullets per day and some mistakes are bound to happen. No other explanation or promise to do better, etc. THAT didn't inspire confidence at all. So, I don't buy Hornady bullets any more if I can help it because such a mix up while loading a maximum load cartridge could be very bad for the shooter.
 
As said above, pull it and do not fire it--the problem is not in the bullet diameter in the bore which may slightly elevate pressures--the more serious issue is whether or not there would be sufficient clearance at the neck in the chamber--this is where the pressure spike could get more serious.

Basic handloading rule is if it isn't right--don't shoot it.

44Bore
 
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