FX FX Maverick 30

Did you have any problems with feeding when shooting pellets? Of not than i don't think you have a problem with your probe. Maybe you can take a picture of the breech and probe. Might be something off.

To be honest though. I think you really are stretching the capabilities of the Maverick when trying to shoot 55gr slugs with it.

I don't know for sure. But maybe the liner doesn't like slugs. FX makes their dedicated slug liners. You could take out the liner to see witch one you have. You Tube is your best friend when figuring out how to do this

The difference between FX liners, standard vs heavy should only be twist rates. No change in liner wall thickness or breech size. Should not have any effect on if slug of right caliber feeds. 30 caliber slugs can vary though, .300-.303 depending on manufacture for specific barrels. FX liners are .300 so anything bigger would be tough. Are you single feeding? With pin probe that can be an issue. Pin probe has very small surface area pushing slug, so if it’s not perfectly inline, it will push it to one side or the other and grab on side of breech of liner. Feeding from magazine usually solves the issue or pushing slug in to breech by hand.

If your pellets are feeding and shooting fine, then your pin probe isn’t bent and your liner is fine. Most likely culprit is how the slug is being fed or slug diameter.

In my experience with fx maverick .30 sniper and slugs is that the cheek rest is keeping the magazine from fully seating to it's home position. Take the cheek rest off of the gun and start shooting that way. If that solves the slug jamming problem, then it's a crappy cheek rest that needs to have a lot of material sanded off of it so that it NEVER touches the magazine in any way ever again.

stovepipe

"I'm wondering if the mag is closing trying reload the next pellet. Before the probe is all the way in." Not understanding that at all. Mag can't rotate until you've pulled the cocking lever & probe back from the previous shot. Don't know what you mean about mag "closing" & trying to reload.

Dump the pin probe. It sounds like the previous owner wanted to shoot slugs and didn’t do a complete job of putting all the stuff together correctly.
I have 4 FX slug guns and there is not a pin probe in any of them. The velocity gain is minimal and common sense should tell you that the larger surface area of the stock probe is going to be more stable and provide a better seating than some tiny pin that is prone to bending and not being perfectly aligned with the path of the projectile into the breech.
I rant about FX and the attendant snake oil that has soured many a shooter on FX. Somewhere the lie that all that crap is necessary for an FX to shoot well got started and has been fertilized with the frustration of people doing DIY upgrades that they do not wholly understand and therefore do not successfully install.
If you doubt me just enter FX tungsten hammer and read all the posts about how “it aint working like I thought it should.”

Have you tried single loading the slugs ? Should narrow down if the problem is with he slug or mag ?

This is the adjustable pin probe from FX. Its a great bit of kit. But when replacing the original with this one, it requires some adjustments. Your probe is sticking out to much. You have to adjust the probe backwards. This can be done in two ways. By adjusting the pin in the probe or by moving the cocking rod in the cocking handle

I think the previous owner tried to modify this rifle to shoot slugs and got frustrated with it and sold it. FX rifles come from the factory set up to shoot pellets and they do that well. Slugs are a different animal requiring boosting power to shoot slugs at a higher velocity (not always), different barrel twists rate, probes, and other power boosting mods. You will likely have to experiment with slugs of various weights, diameters, and manufacturers to find the right one. In essence, it’s a different gun. Why? Some think they are more accurate, better killers or? Pellets shoot well up to 100 yards. I tried them in a number of my rifles and was never really satisfied with any of them except my HM1000x in .177 caliber that I had custom built for that purpose. I suggest returning your rifle back to its original configuration and enjoy shooting it with pellets. Or, if you enjoy tinkering, have fun.

Hi Mrclean4ya. The pin probe you are using has a freakishly long section of bevel between the "pin" diameter of it and the "full .30" diameter of it. That could explain what you are saying about the magazine trying to advance while the slug is being pushed into the breech. So your pin probe looks problematic to me. I would not use a pin probe like that. Although pin probes can be more efficient with air and give you a bit more power, the use of them is more complicated than I think you are ready to mess with. They need to be matched to the slug you are using in terms of the shape of the base of the slug. Like others have recommended -- I also recommend that you just switch to using the stock pellet probe, since it will work for slugs and pellets. Leave the use of pin probes for later when you better understand the maverick.

Once you switch to a pellet probe, your slugs might still have snagging problems going into the breech. This can be caused by a magazine that has a loose screw. Look at the back of the mag at the hex nut and make sure the machine screw is threaded all the way into the nut and it should be flush with the nut.
Another COMMON problem is like I said in my previous post -- your cheek rest could easily be blocking the magazines from seating fully into their home position. From the picture I see, it looks like someone did a little sanding on the cheek rest to try to eliminate the mis-alignment problem with magazines. There is a good chance that they really did not remove enough materal from the cheek rest to guarantee that it will never touch a magazine again -- ever.

Good luck.

stovepipe

CoyoteGod said:

The difference between FX liners, standard vs heavy should only be twist rates. No change in line wall thickness or breech size. Should not have any effect on if slug of right caliber feeds. 30 caliber slugs can vary though, .301-.303 depending on manufacture for specific barrels. FX liners are .300 so anything bigger would be tough. Are you single feeding? With pin probe that can be an issue. Pin probe has very small surface area pushing slug, so if it’s not perfectly inline, it will push it to one side or the other and grab on side of breech of liner. Feeding from magazine usually solves the issue or pushing slug in to breech by hand.

If your pellets are feeding and shooting fine, then your pin probe isn’t bent and your liner is fine. Most likely culprit is how the slug is being fed or slug diameter.

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Thanks for the info. I didn’t realize the heavy slug barrels were only different in twist rate.