300BlkTalk

I intend only for this magazine to be used for 300 BO, as it is separate in manufacturer from the others, so that I can have an easier time distinguishing them. If I have feeding issues, I’ll give the file trick a try.

I've put them on about 370f for about 15 minutes. Earlier, when I went for 20 I managed to warp and melt them, but one bad batch in my first time was not so bad. If you're melting lead at 370 then your oven is way off. Might want to get a thermometer to calibrate it so you can bake at the proper ti...

These are my results with the Lee 150, same profile, just a bit shorter. They fed, but they got scared up pretty good by the locking lugs. I never shot groups with them. I'm thankful there's at least one AR out there that can feed those flat nosed fellas. I'm not looking for long-ranged accuracy, j...

Hard to tell from the photo, but can you get the .250” portion of the nose on the rim? Might be a good place to start. https://i.imgur.com/0rcuhF0_d.jpg?maxwidth=640&shape=thumb&fidelity=medium I'm not entirely sure what you meant by that, sorry. One thing I did notice when I was seating my...

Those spots are likely due to voids in the powder coat. I had prepared my very first powder coating batch on aluminum foil, and that was a mistake. It left voids where it lay flat, and foil stuck to the projectiles. The powder coat is a proprietary mix called "Flame Red" mixed together by ...

The only 309 diameter I have handy is a Lee 170gn Flat nose projectile. I was loading 30-30 for a friend, and this mold was the one I used for him. I had powder coated them, then lubrisized and gas-checked them. From the look of it, when I had loaded the round, it's awfully short when lined up to th...

I had actually picked up that exact Hornady manual not to long ago. Seeing that the powder I happened to have a surplus of was quite absent froim that manual dampened my spirits a great deal, but I'm thankful for any data at all. I know that a variety of Hornady projectiles are available in .309 at ...

I may also add that the mold that I currently have available is a .309 diameter Lee 170gn Flat Point projectiles, originally bought for 30-30 Win. Given its relatively short length, I think it would work great in an AR magazine. Do others have experience with that mold in particular?

I'm going to get started reloading for 300 BO for a 16in AR Carbine. I'm looking to load 170-200gn projectiles. However, when it comes to powders, I've got a decent amount, but it's all stuff that I don't usually see being compatible with the cartridge. I have: IMR 4198 Hodgon CFE 223 Hodgon HP-38 (...