[Gdbyrd]

Hey guys, I'm trying to reload a couple of these rounds. I used some 223 brass that is once fired. Anyhow. Cut it, formed it, trimmed it, and chamfered it. I'm loading Nosler 125 BT. I am trying to load them at 2.08 COL. When I tried to go to a 2.06 as suggested on the Hodgon website the bullets would not stay at that depth. They'd kind of fall through and be at a 2.03 size.

I ordered a Lee Factory Crimp, I set it up to do a light crimp, but I was still seeing a lot of bullets falling through. Even at the 2.08 length. So I moved to a heavier crimp. For the most part it helped. But I'm still having issues where the bullets sometimes "fall."

I only have about 10-15 brass right now. One of the gentlemen on this site offered to send me some more so ill be setup a little better soon. Can't be thankful enough for that! Meantime I'd like to get as many of these function as possible. Really wanted to get it sighted in and take a doe with it this weekend.

I'm loading 17.8 grains 296, for reference. CCI 400s.

[oldpapps]

I've loaded a bunch of 300 BlackOuts and never used any crimp.

Is there a set reason for the COL of 2.09/2.06/2.03?
I always set my depth visually so the ogdive of the bullet flowed into the case mouth. Depending upon the bullet, I've ran from 2 inches even for 110G V-Max to 2.185 inches for 125G OTMs.
Just keep in mind seating deeper reduces the powder space and tends to push up the velocity.
Example: 110G V-Max, H110, the same powder charge gave me 2302FPS with COL of 2.000 inch and 2267FPS with COL of 2.065 inch. (These are averages of not less than 15 test shots each.)

[cfullgraf]

I seat my 300 BLK so the ogive of the bullet just clears the internal rib inside the magazine. So, different bullets will have different overall length. I get the cartridge as long as possible.

The neck tension on properly formed brass should be more than enough to hold the bullet. If the bullet is seated too deep, you will lose neck tension and no amount of crimp will help.

[Boostedtwo]

I try and seat all mine to 2.1. I have loaded a decent amount of 300 blackout, my only suggestion is shoot a few out of your rifle before loading a bunch, I had to pull around 40 bullets, because I didnt quite have my necks long enough.

[Walkalong]

I am loading the 125 Gr TNT bullet in .300 BLK with no crimp and seat it at 2.050. That gets pretty much all the full diameter part in the case mouth. No problems with neck tension. I am loading the 110 Gr V-Max to the same OAL, no crimp, no problems.

[eam3clm@att.net]

What is causing the bullet to slide into the case? Is it jamming into the rifling, and pushing the bullet back, or is the bullet getting set back when handling or chambering. If the bullet is not being engraved by the rifling, causing it to set back, my first guess is that you dont have enough neck tension to hold the bullet. Your 223 brass may be springing back going from a case body to a case neck. If you have a micrometer measure the expander ball. If not try sizing the case twice. If the expander ball is correct and sizing twice doesnt help, you may have to anneal the brass.