Jcmar15:
Add a 2nd ejector pin. Here's the deal:
Assuming your a RH shooter with a RH action, imagine being behind the rifle. Think about where the extractor is now in its clock position. Around 1:30 when the bolt is out of battery right? Now, look at the ejector pin. It's around 7 o'clock. The relationship between the two is important. During ejection, the case will pivot on the extractor claw. Where/how its pushed however can be influenced by adding a 2nd ejector pin. All you need to do is mirror the existing one above the centerline. You'll still be able to use a single common retaining pin this way. Bolt closure on a case will take more effort. Remove 4 coils from the bottom ejector spring and it'll come back to near normal.
What I will say about this in terms of procedure:
Blazing away with a HSS drill is not the best strategy here. Bold heads are tough and reasonably hard. Once you invade the cross drilled hole for the retention pin, the drill is going to want to take the path of least resistance. The way I do it is by starting with a center drill. I get a spot started first, then I chase with a 1/16" drill that breaks into the cross drilled hole. From here I follow with a .125" 4 flute endmill and plunge until its just below the cross pin hole. I finish by going back to a drill (#28) and plunging to the final depth. Last, we ream to .143"
The idea is to get a straight hole that's a few diameter's deep first, the endmill does this provided you pilot drill with the 1/16th first. Endmills don't drill worth a shit, but they do bore a hole well provided they have clearance on center prior. Once you have this, the drill is now supported on the walls and will plunge on center much better. -assuming its a quality screw length drill and not a jobber e from Harbor Freight that some gorilla has "sharpened" a half dozen times.
What this effectively does is alter the point of rotation of the case rim's interaction with the extractor claw. The case will now "punt" in a more horizontal trajectory. -just like the OEM extractor did. This avoids cases mouths bouncing off optics, getting bound up inside the rear bridge, etc. . .
-edit: On most magnum dia cases now we do the "M40" double radius ejection port cut to increase the clearance so that the case has zero obstruction when coming out of the port on ejection. It's certainly more work, but it ensures drama free operation.
Good luck.
C.
Here's an example completed prior to the extractor pocket being machined:
Completed:
.390" bolt face version:
DR ejection port:
