I have been loading up some .30 carbine from a mixed assortment of headstamps, all only once fired. I noticed that some of the cases are too long after being sized, and will not chamber. This has caused me to have to use a caliper on every case after it has been sized, to make sure it is under 1.290", otherwise it won't chamber. Is this common for this cartridge, and does this mean I have to buy a case length guage and trim them all?
.30 Carbine Cases too long
- Thread starter Ghostsaww
- Start date
If some of your cases are over max case length I'd trim them all back to minimum. At least then they would all be consistant.
With my 30 carbine brass, which is a mix of winchester, federal, and remington, I trimmed them after the first firing and I haven't touched them since.
How many times have you reloaded this brass?
With my 30 carbine brass, which is a mix of winchester, federal, and remington, I trimmed them after the first firing and I haven't touched them since.
How many times have you reloaded this brass?
1.290" is the max case length. Like wobbles99 says, trim 'em all to 1.286" and chamfer and deburr. Can't say as I've ever had to trim my carbine brass(Winchester mostly), but it needs to start at all the same length.
"...buy a case length guage..." You have a calipre. Set it to the minimum, lock it there and use it as your guage.
"...buy a case length guage..." You have a calipre. Set it to the minimum, lock it there and use it as your guage.
Johnn Peterson
CGN Ultra frequent flyer
- Location
- Chemainus B.C.
I think in a lot of instances, the suggestion is to trim to the maximum case length minus 0.010". Personally, when trimming is required, I usually go half that amount, 0.005", and trim to that after full length or even neck resizing. I may be wrong but I feel it helps keeps down on the start of case mouth cracks.
Anything over the maximum case length and you're asking for preasure related problems.
Anything over the maximum case length and you're asking for preasure related problems.
