JJ -
Howdy !
Been away from the site for a bit, so am replying later than I had hoped to.
Everybody and their grandmother shoots Dashers, BRs, 'Creeds XC's - 47L's and such.
And I understand there's some really good reasons why.
Another route -
New wildcat chamberings can be had by running an existing reamer in "short".
For example:
A .22-6mm Remington ( " .224 Texas Trophy Hunter " ) can be run-in short for a
nominal .466" base diam. * NO custom chamber reamer to $$$ .
The wildcat uses 7 X 64 Brenneke as the parent brass.
7 X 64 is .308 bolt face compatible rimless. Quality brass is available from Norma, and RWS ( there are others that supply the case in a loaded cartridge ).
The case can be formed using stock 6.5 X55 Swedish FL die w/ its internals removed, as the initial case forming die.
Final steps include use of a stock 6mm Remington die and then a .22-6mm die fro caliber redux to .224" final. *** NO custom forming dies needed for these steps. **
This wildcat has a neck lg of .301", and an easy-to-form 26* shoulder angle; so the powder combustion " turbulence point " remains within the neck.
Sample case I formed has capacity of 50.4gr H20. Cases are very robust, as they are formed from the lower-portion of the 7 X64 brass; so upper case side walls and shoulder area are a tad thicker than what is typically seen in other cases.
After cut-off to final case oal desired, cases are given an inside neck ream and outside neck turn to final caliber desired.
I form and shoot a predecessor 6mm version of this wildcat, which I call " DEEP 6 ".
It has case capacity of 51.2gr H2O, and neck lg of something like .333" ( same as that of 6mm Remington ).
Load / Re-load using stock 6mm Rem dies, equipped w/ .224" cal seater plug and 6mm Rem case holding sleeves (example: Hornady dies ).
With regards,
357Mag