9mm HP vs Round Nose Flat Point Bullet

[LiveLife]

If you look at below pictures of Glock and Lone Wolf barrels, you'll note long leades with gradual start of rifling which will accommodate longer OAL.

Glock

Lone Wolf

In comparison, Sig 1911 and M&P45 barrels have shorter leade (almost none) with sharper start of rifling.

Sig 1911

M&P45

 

[muncie21]

LM- thanks for sharing. Those are of the best pictures I've seen to show barrel rifling.

 

[Ruger 15151]

If you look at below pictures of Glock and Lone Wolf barrels, you'll note long leades with gradual start of rifling which will accommodate longer OAL.

BDS,

After comparing the pictures of your barrels and my Storm Lake, I can see that there is no ramping on the riffling. I measured the chambers in all 4 of my 9mm barrels including the Storm Lake. They are all between .759 - .760. It look like I need to have the Storm Lake chamber throat reamed to ramp the riffling slightly to accommodate the longer COL I am trying to achieve with that barrel.

As always, your thoughtful posts on this as well as other threads always provide a wealth of information for me. Thanks for sharing.