Hi all,
Need some advise about my 30" 7-270WSM Wildcat.
I bought this barrel from someone and is 200 shots old.
I use Norma 270WSM cases and necked them up to 7mm.
I have a .314 chamber so i neckturned them to .312 with a seated bullet.
All of that works just fine and normaly it should chamber just perfect.
When i tryed to chamber the case in the chamber the bolt would only close for 1/4 and i did not understand.
After a while of brainstorming i checked the case lenght and found that it should be in Saami spec of 2.100" and mine measured within this sizes.
Still it would not chamber and i dicided to trim the case a thou of a inch back and tryed to chamber again. evrytime i trimmed it a thou more back the bolt closes a bit more so i did this till the bolt closes all the way down.
At this point i measured 2.0855"
So this is what i call the 0 trim size.
Now my question to you guys.
How mutch further back should i trim the case from the point the bolt just close so it would not crash or split my necks after firing without losing accuracy?
Cheers.
Need some advise about my 30" 7-270WSM Wildcat.
I bought this barrel from someone and is 200 shots old.
I use Norma 270WSM cases and necked them up to 7mm.
I have a .314 chamber so i neckturned them to .312 with a seated bullet.
All of that works just fine and normaly it should chamber just perfect.
When i tryed to chamber the case in the chamber the bolt would only close for 1/4 and i did not understand.
After a while of brainstorming i checked the case lenght and found that it should be in Saami spec of 2.100" and mine measured within this sizes.
Still it would not chamber and i dicided to trim the case a thou of a inch back and tryed to chamber again. evrytime i trimmed it a thou more back the bolt closes a bit more so i did this till the bolt closes all the way down.
At this point i measured 2.0855"
So this is what i call the 0 trim size.
Now my question to you guys.
How mutch further back should i trim the case from the point the bolt just close so it would not crash or split my necks after firing without losing accuracy?
Cheers.
