ORIGINAL: statjunk
ORIGINAL: #40Fan
Maximum case lengths and trim to lengths can vary from rifle to rifle depending on what you want to do with it. If you want to talor the load to your gun, then finding out chamber depth is a must. Setting your trim length back from that.
I tried to measure the oal of my rifle and found that my magazine severely limited the length that I could make the cartridge so would finding the chamber depth really help me?
I think I'm going to go with the Nosler book. I shoot Nosler bullets anyway.
Thanks
Tom
First you guys are talking about two different things. Trim lengths are a SAAMI standard. Don't matter which rifle or whatever. And yes Lymans has this in there, they just put it as a picture. Most of us trim .02" from max. Does not vary as 40 said.
Max OAL is different, and sometimes it is needed. For example I have a 7mm08 with a very short chamber. I could never load any bullet to 2.8" even though the magizine can. Furthest I can load is 2.74 touching the lands. Hodgdon calls out for 2.8", in this case it is wise to know the dimentions of your chamber. But most times, I can't reach my rifling if I wanted to. And its nice to know the jump you do have. Just for safety sake.
You can use a split case technique to find this. Stoney point is nice but not absolutely needed.