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G Dog

Hi All,

This is more aimed at Nathan but anyone can chime in if they want too :)

Nathan - as you know I've got an early ruger in 7x57. The throat on the rifle is massive! The 162 amax has a COAL of 86.40 and the 154sst has one of 84.94mm. Now If I seat the projectile 7mm in the case (very close to neck/shoulder junction) it gives me a coal of 80.94 for the amax and 80.52mm for the sst. So the the jump to lands is 5.46mm/215 thou for the amax and 4.42mm/175thou for the sst.

After re reading the cartridges book of yours, my coals are exceeding what you've wrote by quite a lot, and you've factored in long throats already in your figures.

Should I be concerned? I'll say this now before I forget and no doubt you'll ask - magazine length isn't an issue here.

I've spoken to my gunsmith already about it and he's come up with some really good/interesting points - i.e bearing surface plays a big role and barrel quality(throat area). But I'm always keen to hear your thoughts/suggesttions.

Thanks Nathan (and others)

Grant