Someone explain this free bore thing? Please
Ok,I sent for Matthews book on the paper jacket....I am not too impressed with it,but thats just me....Anyhow...He mentions this free bore alot..I think it is a space between the chamber and the start of the rifleing if it is anything like a WEATHERBY rifle is....Anyhow,he says that this is the cause of why some will shoot the bore diameter PP Bullets and some will not..I do not believe my Pedersoli to have this feature..
Some some of you with more experince,please explain this to me..Cause if this have any truth to do,AM I just blowing smoke for nothing? I know one fellow on here mentioned the rifle just maight not do it ???
I did however try a few yesterday of the groove diameter PP bullets and they weren't to bad at 200...Damn I hate to keep asking you guys all this,but I gots to know and my grandson would say... Just added this...Even with Remington brass and a tight-snug PP bullet fit--Still getting this damn blow by...??
Free-Bore.......What Free-Bore?
Quote:
Originally Posted by
montana_charlie
It might.
The chamber used by Pedersoli is said to have changed recently. I don't know how to define 'recent' in this regard,......................
What is unknown is ...
How long ago did this change occur?
and ...
What is the configuration of the new chamber?
Alternatively (and this is a good idea for other reasons), you can make a casting of your chamber with Cerrosafe ... or make an impact impression with some soft lead.
That will definitively answer your current question, and will probably prove useful for later wonderings, as well.
CM
What MC has mentioned, is true.
Here's a pic of the chamber from my Ped RB 45-70, made in the early 80's. You'll notice that there is NO Free bore in this chamber. Best to do a chamber cast and save yourself a whole lot of trouble.
RRR