Newbie Reloader With Case Length Question...

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J

jambie

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Hi All,
Just getting started in reloading, for obvious reasons when shooting my .416 Rigby. I've got some once-fired Hornady brass, and the Hornady manual specs 2.90" for max case length. All the once-fired brass is measuring 2.9000 to as much as 2.907". What are the allowable tolerances? I didn't think I'd have to trim the cases after each round...

Cheers,
Tom
 
Your manual should say:
Max case length = 2.900"

"Trim too" length = 2.890".

At least that's what mine says.

What it means is, you trim them once to 2.890", then trim them the next time any of them get longer then 2.900".

However with that said, if you are case crimping the bullet in the seating die, you will need to trim more often to keep them all the same for a consistent bullet crimp.

Not sure if Lee makes a FCD in .416 Rigby, but if they do, it would be a good way to crimp and avoid case trimming all the time.

On the otherhand, if recoil isn't battering the bullets back in the case in the magazine, there is really no reason you need to crimp for a bolt-action rifle.

rc
 
Thanks for the response. Mine quotes the "trim to" length as 2.89 as well. I'll be ordering a Forster classic trimmer tomorrow. I've heard it's a good one by all the reviews.

Also, I've read that the .416 round should be crimped (as are the Hornady factory rounds) due to the significant recoil. The whole crimping process using the seater die sounds pretty mysterious. I'll have to get some hands-on guidance for that, me thinks...

Cheers,
Tom
 
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