220 russian or short 22 ppc?

[j mckinnie]

I am planning a 22 calibre barrel for the Aussie 9# sporter class.The reason being a hot 6ppc load in a 9# gun is fairly lively.What are the velocity and pressure comparisons for the 2 calibres.Their capacities are very much similar and if a bit of time making cases makes a difference then it will be done.I assume the short ppc gets better velocities (higher) than the straight russian due to shoulder and side angles.any info is much appreciated.
thanks jim

 

[MarkR]

You might want to check out the 220 Beggs. It's a 220 Russian with the neck/shoulder radius changed to eliminate stretching.

 

[eggman]

Ditto on the 220 Beggs.

 

[j mckinnie]

Ok

what are the differences in pressure velocity etc. between a Beggs and a short ppc.There must be a reason people do the work involved to make short ppc cases over shooting the straight russian?

 

[abintx]

jm ...

There must be a reason people do the work involved to make short ppc cases over shooting the straight russian?

Some folks love working with brass more than others. Nothing can be easier than the no-turn neck 220 Beggs. If you like just a little more work, try the light-turn neck. I found that the light-turn 6mm Beggs was very easy too.

 

[Charles E]

I don't know velocity/pressure differences, if you search ."220 Beggs" you can probably get them for that round.

There is a long-standing prejudice against cases with a fair bit of body taper and shallow neck angles. They are suppose to stretch more. Days gone by, they were suppose to be less accurate, and give shorter barrel life.

The accuracy/barrel life claims have mostly been debunked. There were other reasons, for example, that the .243 Winchester gives short barrel life.

But old wives tales die hard. You can still find these claims as gospel both on the internet and in shooting magazines.

What Gene Beggs discovered was that if you kept the radius to .062 on the neck/shoulder and shoulder/body junctions, the case didn't stretch excessively, either. A part of the Beggs system is a reamer made to his specifications, and a set of dies. I don't believe there are any export restrictions on these.

In the FWIW department, George Kelbly (the senior of the Kelbly clan) shot a pain-Jane .220 Russian for years. Maybe he still does.