30 carbine loads

[massgun]

Haven't done any reloading for about 20 years, but due to availability and price of 30 carbine ammo and because a neighbor wants to shoot his carbine also, I'm digging out the equipment again. From my number 12 Speer reloading manual and scribbled notes I seem to have used 13.8-14 grains of H110. I found some powder, primers, projectiles and cases in my stash of stuff and would like to hear any opinions/advice on new loads or if I'm fine to just stay with my old recipe. I appreciate all replies.

 

[JuergenG]

14 grs is the starting load for a 110 grs bullet, you probably need to go up to 14.5 grs of H110.

 

[massgun]

14 grs is the starting load for a 110 grs bullet, you probably need to go up to 14.5 grs of H110.

This is why I'm asking for updated info, my 1994 Speer manual shows 14.0 grains as a maximum load for 110 grain projo and 14.5 gr for the 100 grain projo. Do more recent manuals show higher max loads and would that apply to my 20+ year old powder or for a more recent batch of powder?

 

[milktree]

 

[jakeroub]

1. Have you seen that the CMP has surplus carbine ammo available? Not exactly cheap, but wanted to point it out.

2. Don’t trust load data from the internet.

3. It is very important the carbine ammo be trimmed to the proper length- don’t forget that.

 

[massgun]

1. Have you seen that the CMP has surplus carbine ammo available? Not exactly cheap, but wanted to point it out.

2. Don’t trust load data from the internet.

3. It is very important the carbine ammo be trimmed to the proper length- don’t forget that.

1. Haven't looked because I haven't bought anything from them in years, would probably need to update paperwork.

2. I don't, that's why I'm asking here.

3. After reading a couple things about the necessity of that, I have the cheap Lee trimmer setup and would feel better making sure the cases ( especially if new) are trimmed below max.

 

[milktree]

2. Don’t trust load data from the internet.

Even data published by the powder manufacturers? I’d think that would be equivalent to a book.

3. It is very important the carbine ammo be trimmed to the proper length

Why is it so critical? Neck tension, or headspace?

 

[DW357]

I run 14.5ish gr of H110 under a 110 grainer

 

[Uzi2]

 

[jakeroub]

Even data published by the powder manufacturers? I’d think that would be equivalent to a book.



Why is it so critical? Neck tension, or headspace?

Long case can lead to an OOB detonation, which can happen if the bolt is forward but not fully rotated. This is a known issue in carbines.

 

[45collector]

I've been using 14.0 H110 with the 110gr FMJ for as long as I've been loading that cartridge. Yes definitely check case length on every piece. Years back i did a batch of 50 that I had forgot to trim and the gun (Underwood) failed to go to full battery on several rounds until I realized my mistake.

 

[whacko]

1. Have you seen that the CMP has surplus carbine ammo available? Not exactly cheap, but wanted to point it out.

2. Don’t trust load data from the internet.

3. It is very important the carbine ammo be trimmed to the proper length- don’t forget that.

The load data from powder manufacturers websites are perfectly fine.

 

[whacko]

Even data published by the powder manufacturers? I’d think that would be equivalent to a book.



Why is it so critical? Neck tension, or headspace?

The m1 carbine headspaces on the case mouth....out of battery detonation is a concern with stretched cases.