• You might be confusing "feeding" with "chambering". Feeding is (loosely) the act of leaving the mag and going up the feed ramp. Chambering is (loosely) the ability to properly headspace in the chamber without issues from case dimensions (usually taper crimp on a 9), or bullet striking something (such as the rifling) due to OAL issues. IME all the Berry brand of 9mm RN bullets (115, 124, 130, 135 & 147gr) can generally be loaded at any reasonable OAL.
• IMHO when you reload 9x19 you're looking for 3 things: 1) good feeding, 2) good grasp of the bullet, and 3) room for powder.
1) On a modern firearm you're likely to get great feeding with any RN, as long as they stack in the mag without binding. The SAAMI max may be 1.169", but stick with a max of 1.160" and you'll always have that .009" clearance working for you. Besides, it's easier to read. Obviously, some lighter weight bullets are going to be better off loaded shorter.
2) If you have a 100gr or 115gr bullet all the way out at 1.169" then there's hardly any bullet inside the case. That means a) the bullet lets go with the slightest pressure and b) is more likely to be knocked womper-jawed going up the feed ramp. That is not so much of an issue with the 147gr since the bullet's body is so much longer. Still it's a good thing to check on any 9mm. Just my wild guess, but you probably want a minimum of .100" engagement, and much more like .120" or .130" if you can get it.
3) Whereas #2 is not an issue so much with 147gr, room for powder inside the case is always an issue. Put your measured powder into the case, then use the depth gauge portion of your caliper to measure from the case mouth down to the powder level. Your OAL minus case length minus bullet length will calculate how far down into the case the base of the bullet is seating. Compare the height of the powder to the seated depth.
Simple caliper measurements can really help you.
Hope this helps!
