Rikky Lee: Everybody goes with 1 in 14, I decided to go with 1 in 13" just in case; it was available from Pac nor as a 3 grouves barrel as well, which is supposed to reduce initial peak pressure.
We will see the result when I shoot the gun.
For the moment I have stocked 350 gr and 400 gr Speer bullets.
redtazdog: 45/70 works well: into a single shot rifle with a falling block, or contender and encore or in a siamese Mauser.
It is a parallele wall case,with a straight column of powder, which is technicaly not as accurate as a short fat case with a shoulder (problem of alignement in the chamber, and consistency of powder burning), but that does not mean that a 45/70 can not perform well at 1000yards. Proof is in the good results that some guys get into their falling block rifles (with sometime a lot of tweaking!).
The 45/70 has too much powder capacity compared to the 458 socom, which can give inconsistency in powder placement in the case and variation in velocities when loaded subsonic. An alternative would be to use the 45 silhouette, which is a 45/70 case trimmed down to reduce its case capacity.
Also, there is another cartridge , the 458 1"1/2 that can have the same purpose, but with a magnum bolt face required and again ,it is a straight wall cartridge.
ND
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