Soon I will have a 5,6x57 for fox hunting.
And my next project should be something very hot in 22.
I have an M98 in 8x68S I could take for ma 22 project.
So my question are there any experiences in a 22 basing on the 8x68S.

Burkhard

quote:

a 22 basing on the 8x68S.

Burkhard

Sounds a bit "overbore" to me.

More than a bit. Way, way more.

gentlemen,

thank you for the replies. I was just a question from an amateur.

Burkhard

There isn't much further to go than your 5.6 x 57. That ought to push a varmint bullet as fast as it can go without disintegrating.

I agree with the others that the 8x68 would be overbore.

The large cases are best suited to heavy bullets, but even when using Richard Graves Wildcat 100 grain ULD, I don't believe that there would be a powder available that is slow enough to give close to 100% loading density at maximum pressure.

Coincidentally I am in the process of building another .224 Clark, (22/257 Roberts Imp) which is in reality a 5.6x57 improved without the thick neck. The capacity of the .224 Clark is about 63.8 grains, but I estimate that the 22/8x68S would be about 80 grains.

I have just ordered a Krieger 26 inch barrel with 1 in 6.5 twist to stabilise the Sierra 90 grain MK (1.160 in), and Wildcat 100 grain ULD(1.300 in) and 107 grain ULD (1.355 in).

The Wildcat 100 & 107 grain bullets are using a heavy 6mm jacket to withstand the effects of the high rpms produced by the fast twist.

The sectional density of the 100 grain bullet is .285 which is similar to that of a 160 grain 7mm bullet, (.283) so they should penetrate well, and theoritically be effective on medium game. Time will tell.

A recent test by someone using a 22/6mm AI with the 100 grain ULD produced 3,250 fps, so the .224 Clark should achieve a similar velocity, as it has a similar case capacity.

Maybe the above will give you something to dwell over. Brian.