Artillery Barrel Specs???

[sheepherder]

Originally Posted by Hawkeye 5

Great Job Traxx, I mean Postino. have you shot it yet?
Hawkeye

Only one "x" in Trax, Hawk...

No, all my 9mm is reloaded "hot" for my S&W 659 longslide...I need to get some 124gr FMJ and reload some for this & my S/42...

[PhilOhio]

Postino,

Fantastic job, all the way around. One thing I noticed is that you ramped the barrel almost exactly as I would do, the maximum amount without leaving any of the thinner part of the case web unsupported, and also the correct angle...at least what I would consider correct.

Last week I was comparing my newly acquired 1937 S/42 and my 1917 DWM Artillery. I was surprised to see that, although most values appeared identical, there was a big difference between the two feed ramps. The 1917 was ramped about like you have done, but the S/42 had very little ramping. I would consider it inadequate. But still, it feeds even my lead RN bullets flawlessly, even though they are over .050" below max OAL length. Why that works so well, I have no clue.

But I still think all handgun barrels should be ramped as you have done.

[sheepherder]

Originally Posted by PhilOhio

But I still think all handgun barrels should be ramped as you have done.

PhilOhio -

I tried to get the barrel ramp angle as close to the frame ramp angle as possible. It's not as unsupported as it looks; it is almost exactly the same as my Lahti barrel/frame ramp, and much less than my .45 Colt auto. I've had good results with matching the barrel/frame ramps on those pistols, over the years, with no problems (knock on wood)...In any event, I don't plan on shooting any Luger with a full load; I'll load 10% less than whatever Speer recommends.

I just measured (as best I could) my barrel ramp vs my commercial & S/42 Lugers. Mine is ~.012" deeper than those two, it just looks deeper in the pics.