Re-Sizing .311 Projectiles for .300 Whisper...

[Just Call Me...G]

Howdy Gents,

So, I am sitting at my loading bench today sizing a batch of lead boolits to .309 and putting gas checks on and I notice some .311 Speer jacketed projectiles I have. They are there as a reminder to load up some rounds for my SMLE.

I started wondering...can I run these through my sizing die and make them .309 projos that would work for my Whisper???

Anyway, I finished up the lead and thought I would post on here and see if any of you have done anything like this.

I have had a heck of a time finding regular .308-type jacketed projectiles since the "Great Panic of 2013", as I am sure some (or all) of you have had.

I dug out my SMLE because, well...it's a great gun to shoot!
Seriously, the one thing that I have noticed is that there are still p-l-e-n-t-y of .311 bullets to be had.

Just another 'what if?' kind of scenario.

I may just go ahead and re-size a handful and then check them to specs.
I have both a (true) Whisper rifle as well as a 300 BLK SBR.

Food for thought...


Keep The High Ground,


G

[Hoser]

You need to get a bullet resizing die to size them down. I have a CH4D die. Be warned, it actually takes a lot of oomph to push a jacketed .311 bullet through a .3085 die. I did a couple thousand ZMax bullets a while back and it was painfully boring. I would just do a little each day, they eventually got done.

[Just Call Me...G]

Thanks, Hoser.

I have a Lee 308 resizing die and might decide to do this...once I finish up all of the other reloading projects on my bench.

I also found a similar post on the 300BLK forum:
http://www.300blktalk.com/forum/view...t=.311#p740449


Keep The High Ground,


G

[sten668]

How does the Ruger Mini 30, with a .308 barrel handle .311 ammo without problems?

[Garrett]

I just ran a hundred85 gr. .312 XTPs through a Lee .308 sizing die to try in the Whisper. They sized down just fine - seem consistent. I'll try loading them over some Trailboss and see how they do. Hopefully I'll get to try them out in a day or two.

[MMA10mm]

Different bullets will react differently to this. I once sized down some .323" 8mm bullets to load in a .318"-barrelled Mauser. The core became loose from the jacket. Turns out the jacket will spring back a bit while the lead core stays smaller, creating looseness. The solution, IF this happens to you (doesn't always), is to size a couple thousandths smaller than your desired final diameter, and then run the bullet through a bump-die to re-expand the whole thing to final diameter. Then, the core and jacket stay firmly swaged together.