300 Blkout dies

[firewalkerd1]

I'm ready to make the plunge to a 300 BLK out bolt rifle. Ruger most likely. My question is die selection between FL sizing or FL small base sizing. If I understand the small base would be for mostly semi auto, pumps etc. Would it make a difference in a bolt or what would be the difference? My thought would get the small base just in case I reload for other than a bolt.

[Wayne Smith]

The force of a semiauto bolt is less than the force of a bolt action bolt and that is the original purpose of the small base dies. Since then it has been learned that the small base dies prevent some of the growing of the length of the cartridge. Thus they are used more commonly than originally. It is really up to you. If you think you will by a semi auto action then go ahead and get the small base dies.

[dragon813gt]

I use small base dies on an as needed basis. The less you work the brass the longer it will last. At this point I have only needed small base dies when initially forming cases, not 300 BLK. This is to allow easy chambering. After initial firing regular dies work just fine.

[firewalkerd1]

Thanks for the info.

[jmorris]

I have never bought small base dies but I don't own any rifles (or pistols) that have chambers that are too small to accept ammunition loaded to original specs.

[wordsmith]

I can only speak for Lee dies in the 300 BLK, but I've never had a problem with feeding using standard dies. This includes reloads used in a 9" AAC upper, 10.5" AR Stoner, 16" AR Stoner, 16" Remington 700 Bolt Action, and a couple of 300 BLK Handi Rifles.

I've solved many feeding problems using the Hornady Headspace Comparator to religiously measure fired brass and setting the die to produce an appropriate amount of shoulder setback. Can't recommend this tool strongly enough.

[MT Chambers]

2 words....Redding Deluxe Die set.

[dragon813gt]

2 words....Redding Deluxe Die set.

Common core math?

[rockshooter]

small base dies will help build your shoulder muscles
Loren

[Aunegl]

2 words....Redding Deluxe Die set.
3 types of people in the world. Those who can count and those who can't.

[jmorris]

It was late I think he just added too many spaces, Reddingdeluxe Dieset.

[bnelson06]

Good common core answer!

[Moonie]

Well, he did show his work...

[flyingrhino]

I reload for an AR15. I use the Lee die for case forming. I use the Forster for reloading. I had to lap several thousands off the base of the Lee die so it would push the shoulder back far enough for reloading. I've heard of several people having to do this. I also had trouble with the Lee bullet seating die. It had too much slop in it and didn't hold the bullet in alignment with the case mouth so I got non concentric cartridges. So, I retired the Lee bullet seating die. Use the sizing die for initial forming from 223 cases. Got the Forster sizing and micrometer seating die for reloading. Use the Lee crimp die. I can't say enough about the Forster seating die. I get perfectly concentric reloads and the micrometer is sweet for making exact changes in seating depth and for switching bullet types. Just write down the mic setting for the particular bullet style and resetting the die for a new bullet is as simple as dialing in the setting. Never had a need for a small base sizing die. They function perfectly in my AR.

[dudel]

No problems with the Hornady die set for either case forming or reloading. 100 free projectiles just sweetens the deal. My 300BO really likes the Hornady 150gr projectiles.