Hi all,
Firstly, I freely admit that I am a noob at this sort of stuff so please ignore any incorrect terminology etc
I've got a bit of a project going and I have been reading lately about the suggested differences in hardness between the bolt face and barrel to reduce/eliminate galling.
Now I understand that ideally there is at least 5 points of difference between the two but my question is - how big a difference is 5 points in real life?
I have had my barrel/reciever (it's a Blaser R8) tested and it's apparently 36. The material I'm looking at using (17-4 ph) is about 41. Is the 5 points a massive difference or would I be better to get someone to anneal it down to 36ish before commencing the machine work?
Also, I assume that the bolt is usually harder?
Thanks in advance.
Firstly, I freely admit that I am a noob at this sort of stuff so please ignore any incorrect terminology etc
I've got a bit of a project going and I have been reading lately about the suggested differences in hardness between the bolt face and barrel to reduce/eliminate galling.
Now I understand that ideally there is at least 5 points of difference between the two but my question is - how big a difference is 5 points in real life?
I have had my barrel/reciever (it's a Blaser R8) tested and it's apparently 36. The material I'm looking at using (17-4 ph) is about 41. Is the 5 points a massive difference or would I be better to get someone to anneal it down to 36ish before commencing the machine work?
Also, I assume that the bolt is usually harder?
Thanks in advance.