Thread: Seriously underrated 6.5x47 Lapua

Originally Posted by Puffin

Wingman, please tell me a bit about your reamer: your freebore length and neck diameter (clearance) choice and perhaps your thinking that led to these dimensions? I think I would be right in saying that these are likely to be the two variables with everything else staying much the same at standard CIP - unless you also requested the leade angle be tweaked?

The rifle is predominantly a hunting rifle so this school of thought was always foremost on the build specs. Tight neck reamers and long freebores with crazy lead angles for secant or hybrid ogive bullets would limit the range of suitable hunting bullets and adds possible mechanical complications in the field which I wanted to avoid.
The reamer was ground to cut a .298" neck, my loaded non neck turned neck measures .290" and the free bore length set up for the 139gr Scenar at .235". This puts that bullet in 100% neck to bearing surface contact with 5 though jump and a 2.73" COAL.
The lead angle is std CIP.
The 130gr TMK is very much the same dimensions as the 139gr scenar with the same boat tail and ogive shape, other than the plastic tip they almost measure identical which has made for easy tuning of that load.
I look forward to testing some other bullets but early signs show its really not that fussy to load for.