300 Blackout reloading question

[tankarian]

I just got my 300Blk reloading dies today. I cut some .223 brass to size, formed it in the sizing die, cleaned the burr, trimmed it to 1.364 in, and seated an 110 grain Nosler bullet to 2.195 inches (maximum overall length according to the manual is 2.260 inches).
I lightly crimped the bullet but the portion that was seated in the casing neck was too short and I snapped the bullet out just by pressing it sideways. I incrementally adjusted the seating die deeper and deeper until I couldn't remove the bullet by hand. I measured again and the cartridge overall length is now 2.115 inches.
My question for those who have more experience than I do in reloading rifle cartridges: is the cartridge overall length too short now? How short is too short?

[bigred1]

That seems long to me for a 110. My 125 Nosler BT are seated to 2.040 and my 150 FMJs are currently 2.140.
I've been seeing some weird COAL lately from books. Like Hornady said the COAL for the 150s was supposed to be 2.220 which I thought was rediculous.
My advice would be to check multiple sources.

[tankarian]

That seems long to me for a 110. My 125 Nosler BT are seated to 2.040 and my 150 FMJs are currently 2.140.
I've been seeing some weird COAL lately from books. Like Hornady said the COAL for the 150s was supposed to be 2.220 which I thought was rediculous.
My advice would be to check multiple sources.

So I should seat it even deeper?

[Witch Hunter]

Basic loading logic is a caliber's depth in the neck. So .308 of the bullet into the neck on yours. As long as your gun functions fine, don't worry. Sart low and work up, shorter creates more pressure.

[bigred1]

https://travis-furry.squarespace.com/300-aac-blackout

That's nosler's load data page they are showing 2.025 as tested length.

2.260 is max because it's magazine max. What reloading manual are you using. I have not been impressed with hornady at all. But COAL from Sierra and the powder companies seems more legit.

I also miss typed on my nosler 125s. Currently I'm loaded to nosler specs of 2.060 w/ 17.5gn win 296.

[tankarian]

https://travis-furry.squarespace.com/300-aac-blackout

That's nosler's load data page they are showing 2.025 as tested length.

2.260 is max because it's magazine max. What reloading manual are you using. I have not been impressed with hornady at all. But COAL from Sierra and the powder companies seems more legit.

I also miss typed on my nosler 125s. Currently I'm loaded to nosler specs of 2.060 w/ 17.5gn win 296.

I found all the needed info on 300 black talk forum: