GunCat

If you are using a mag tube clamp here's a helpful hint for reassembling the gun to avoid undue barrel pressure from the clamp (All the non-clampers can skip the rest and proceed with your day): Remove the mag tube extension from the coupling nut (or at least unscrew it about half way). Assemble the gun and screw the coupling nut on tight against the forearm. Screw the mag tube extension into place until it stops, then back it off about 1/8 turn (the goal is to allow the mag tube extension to have just a little movement). Install the clamp and tighten the screws (reasonably tight is good enough, no need to get heavy handed and crank too hard). Install the follower, spring and mag tube end cap. Again, the goal is to allow the mag tube extension to have just a little movement so any pressure the clamp exerts moves the tube, not the barrel.

White, powdery residue? Looks like the remnants from bluing salts that did not get cleaned out. Clean it out once, drench the area in oil and it should never be a problem again.

The Practiscore emails (from the Pro registration) indicated that squadding opens in late May.

Just in case someone missed the M1 Garand and 1917 in the gear breakdown above. Everyone's favorite SGM (Ret) is the coolest guy you can shoot with! https://flic.kr/p/SXWrx6 https://flic.kr/p/SVukcA

Did the issue happen before the inertia spring change? Is the bolt fully closing, then bouncing back open when cycling at full speed? Hand cycle a few rounds to make sure the bolt is fully closing (watch the extractor position to know if the bolt rotates into battery when you cycle by hand)

I would add a few drops of blue Loctite (after cleaning off both threaded areas) for insurance. Hand tightening might keep it in place, but nothing good comes from a loose mag tube,

Related question...http://forums.brianenos.com/index.php?/topic/144292-why-do-we-have-to-weld-up-lifters/#comment-1619886

You better! We hope to see you, she, the little fellows, and the white van back here soon! Best of luck in your new position!

That is more extra length than I've noticed with the C-Rums modified carriers I have used. You mentioned the loading port being opened...Is the follower being stopped at the end of the magazine tube/receiver - or is the follower coming out of the mag tube and being stopped by the shell latch as the last shell is being cycled?

Well that didn't take long! I've not missed a Pro Am yet and I'm looking forward to seeing what the new MD has in store for us.

How much “extra” length does the follower or carrier have? If its just a little (maybe 1/16” or so) then grind just a little length (aka “just enough”) off the end of the carrier/lifter so it just clears the follower. I've had to do this on a few 930s when installing extended lifters.

Generally that is a sign that the shell catch needs tuning (or un-tuning if its been tinkered with)... or replacement.

From what I remember there may have been issues with the trigger adjustment coming loose (or being tinkered with too much)

This is my understanding of the Super X triggers: 1st style grooved face, adjustable, dual hammer springs 2nd style grooved face, adjustable, single hammer spring 3rd style smooth face, not adjustable (The 1st and 2nd style triggers are the same, just a change in the hammer spring design)

Maybe some help here: http://www.ar15.com/forums/t_6_1/305257_INSTALL--Dave-s-Metal-Works-Easyloader---Remington-1100-12ga--56k-BEWARE--.html

Is the pin hollow or a solid pin? All the left hand guns I've seen had a solid pin with a retaining clip. Don't push the pin up from outside the receiver (as you've noted it cannot go very far). Push the pin down from inside the receiver - but first remove the clip in that groove in the side of the receiver. Next with a small hooked wire (or better yet, a dental pick) push the pin down from inside the receiver. Link to a related picture

Unscrew the factory bead (righty tighty, lefty loosey) then install your favorite bead with a 3-56 threaded shank or screw. The Hi-Viz Comp or Tri Comp is very popular. (The Benelli bead is actually a metric size thread, the more common 3-56 thread size will fit right in the hole in the rib)

Notice how the barrel diameter decreases behind the choke tube? If you cut off the barrel you may not be able to retread it, definitely not for the original choke tubes. I would contact Benelli again. The 1st response noted above would be unacceptable to me.

If the gun is all original it is a .300 H&H Magnum. As noted the .300 Winchester Magnum did not come out until 1963. (Does your rifle still have its original barrel? Has it been re-chambered at some time? Those questions may change the answer to you question)

Given that the first 16 rounds cycled your trigger group installation sounds OK. Check for debris (gravel, piece of shot, etc) inside the mag tube causing the follower/spring to hang up. also check the area between the shell latch and the inside of the receiver. Another place to check that can hamper feeding is the junction of the factory mag tube and the extension. Is there a gap or ledge than can let the mag tube spring hang up? This issue can stop or limit the amount of force with which shell come out of the mag tube

You can send one of those Comp lifters to Jeff at C-Rums and he will make it look just like the longer lifter in my picture above.

The VersaMax Competition lifter is the black one in this photo. It is the same overall length as the standard lifter but with the end groove filled in.

A stronger mag tube spring (assuming the lifter is OK) will generally fix this problem. What type of lifter is in your gun?

Has this ever actually caused a jam in use - or only in theory? The shell coming out of the Matchsaverz and into the receiver port is no different than any port load with the bolt locked back. Experimenting with my M2 I can cause a shell to move under chamber area if I point the gun down and manipulate the shell just so, but pressing the bolt release still lets the carrier's movement kick the shell up and into the chamber. Never had the issue come up in use (and then the gun is generally held parallel at the shoulder when the Matchsaverz shell is slipped into the port anyway).