I was just wondering if someone here would be able to tell me what's different about these two chamberings. I assume that the Palma chamber would be shorter overall to fit the 155gr bullet specifically? Anything else different? Same dimensions otherwise? Thanks for your help....ol blue
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.308 win. match chamber vs. .308 Palma chamber
- Thread starter ol blue
- Start date
George Stringer
Staff Alumnus
Ol Blue, I haven't seen anything on the chamber dimensions but I'm sure that you're correct about the shorter throat. I did read where they had special ordered their barrels with a 1 in 13 twist. They have a web site. I don't know what info they might be willing to share but you could ask them. http://www.palma.org/ George
Thanks George. I used the link you referred to and was indeed able to find a friendly guy named Grant over there that had the answers to my questions. For others who might be curious about this as I was, basically, the Palma chamber will be tighter bodied, shorter throat, tighter straighter neck, with a shallower lead angle on the bullet....ol blue
'Sounds like a way to get a chamber closer to the minimum side of SAAMI's tolerances. I was not aware of a "Palma" chamber.
A friend of mine had a 700V built in 7mm-08 with a "tight neck". What a pain in the arse. A SAMMI minimum chamber would be more practical, not withstanding the occasional commercial brass that might need some sizing for the first firing.
I guess you might need a custom sizing die to take advantage of a SAAMI minimum or Palma chamber?
A friend of mine had a 700V built in 7mm-08 with a "tight neck". What a pain in the arse. A SAMMI minimum chamber would be more practical, not withstanding the occasional commercial brass that might need some sizing for the first firing.
I guess you might need a custom sizing die to take advantage of a SAAMI minimum or Palma chamber?
Sensop, I don't really know for certain,so don't take this as me knowing what I'm talking about, but I don't think special dies are needed. I know some people are using it to acheive a shorter throat in rifles where it is hard to get anywhere near the lands. That's one advantage of the Palma chamber. There may be disadvantages as well. The shallower lead angle is specifically for the 155gr Palma bullets, as I understand it. So don't know how it works with other bullet shapes. Maybe someone else knows some more about it...ol blue