surgdog

I have a lot of brass from rifle competition people don't pick up and started processing. I have prep tool head just like you and added the Swage It. I really like it.Since its new I have been checking my primer pockets with a gauge and it is giving excellent results as far as the gauge goes. The only problem is that the Lyman M die sometimes flares the mouth too much and I have to rerun it. It must happen with longer brass since it doesn't happen with everyone even though I have adjusted it several times. But at any rate the Swage It takes a whole separate step out by doing the swaging on the "prep" tool head.

Well after several attempts to get in touch with Taylor--the last time I thing they picked the phone up and hung up I found ZR Tactical Solutions. They promptly answered an email so I'm going to send my barrel and gas port to them to enlarge the gas port. They have it listed as a service on their site for $75, I guess Taylor has more business than he can handle to not even reply but good for him. ZR states they have a 2-3 day turn around. I'll let you know.

matrixarms.com They have been out of stock but recently got more. Still appear to have some as of just a minute ago. I just received a side charging upper from them last week.

Sumtoc, how did you get in touch with Taylor? I have emailed and tried to call to no avail. I want to send mine to him as well. Just don't know how. Thanks, mk

I certainly agree with your statement but I have used my recipe for my handguns and don't want to change or have a different load for just one gun. If I can accomplish that by opening the port a bit it would be worth it. As far as the OP original question about an opinion between the two its just my personal experience that as far as obtaining one of the two and going to shoot the CZ is a more competition ready platform IMO. I love the MPX. It is cool and a blast to shoot. It's just taking more tweaking than the CZ and for almost twice the money I would think it would shoot anything fed to it. But as you rightly point out it is a different operating system and as also pointed out in a different thread on here somewhere Sig probably didn't design it for competition. Once I get it going I can't wait to shoot it in completion with my handloads.

I have both that I have tried to set up for PCC competition. Both are pistols that I SBR'ed. I did make some modifications to the CZ with the HBI trigger spring kit and changed the right sided safety. The CZ has worked without a problem and will shoot any ammo fed to it. It is very accurate. Works with my reloads very well. I love the looks of the MPX but I have problems with FTE with my reloads (147 gr xtreme RN over 3.3 gr Titegroup). It fires commercial ammo without fail. Others have pointed out that the Gen 2 MPX which I have is "undergassed" but improves with a break in period of a few hundred rounds of commercial ammo and mine has gotten better but not 100% yet. I'm considering sending it to have the gas port enlarged which seems to correct the problem. You would think that a gun that costs significantly more than the CZ would work with all ammo. If I were to get only one at this point I would go with the CZ for cost, reliability and easy modification if felt necessary by you. Just my 2 cents. I'm sure others will have different opinions.

When I got back from shooting commercial ammo and cleaned it that gas valve and tappet where filthy and very stiff. After taking apart, cleaning and oiling they feel much looser so I'm hoping this will help. My production load--147 gr xtreme RN bullet over 3.3 Titegroup at 1.160 OAL was shooting better after commercial ammo so hopefully now after a good cleaning it will get even better. Happy New Year to all. mk

OK, here's an update. Got a chance to go to range and shot 250 rounds of 115 gr S&B commercial ammo. Ejected great and no problems. Then tried my reloads again and there was improvement in that I had no FTE. Ejected brass going a little further. Only minor problem is that not getting last round bolt hold back with the reloads. Going to go clean it well including the tappet and oil it up good. Will cont to take it out and shoot commercial until confident in its reliability before shooting in competition. Appreciate everyone's spot on advice. MK

Thanks for the replies. How far out does your gun eject the brass? My brass was hitting just to the right of my right foot. Makes me think not enough gas coming back to operate bolt. Will follow the recommendations above and shoot higher powered commercial ammo for several 100 rounds but don't see how this would improve my reloads ability to cycle gun. These are the same reloads I use for pistol competition and I'm basically lazy and don't want to do a separate 9 mm load for MPX. My CZ 75 and Scorpion work great with them. Have found this problem noted elsewhere but no definitive answer on how to beat it other than "breaking in". At this point with the cost of the gun and the now approved Form 1 have no choice but to continue on. May call Sig after 1st and see if they have any advice. Thanks everyone and Happy New Year. M

Got a Sig MPX and been waiting 200 days for the Form 1 so just took it out last weekend and had multiple FTE. Using my reloaded competition ammo 147 RN bullet over 3.3 gr Titegroup. Noticed cases landed within a foot of so from gun with ejection. Research implies that the gun is "under gassed" never heard that term before. Seems you have to do something with the gas return system but can't find details. Might just need a break in period with higher power ammo but you would think when paying well over $1000 for a gun it should work. I have a CZ Scorpion and it shoots everything. I was curious if anyone else on here was having similar problems and had a remedy? Searches didn't reveal anything. Thanks, MK

I bought a CMMG MK 9 as a pistol and Form 1'ed it to make an SBR. It is awesome and so much fun. Has been reliable and is awesome in PCC competition. Got 6 Metalform Colt style mags from Brownells but can also find at PSA for $20. Just be certain to buy the mag loader. They are a bear to load without it. The whole AR 9mm deal especially when you SBR it has reenergized me in competition shooting and also started me down a road of more PCCs. I recommend the CMMG highly. Happy to answer any questions you might have. MK

Bryan, Do you have one of these? Does it work well? I'm like Carmoney I have a PSA Glock lower awaiting the Form 1 to return and was going to order the PSA 7.5" complete upper for $400 but they have been out of stock for months. In the meantime been thinking about a side charging upper but this is $350 more than the PSA. Looks like you can buy each component at Joe Bob Outfitters except the barrel for less. Decisions, decisions. Thanks for pointing out this upper and hope you have some experience with it you can share. Mickey K

Hate to tell this on myself but that recently happened to me after being stable for years. I had put the wrong powder in. Only had to pull 300 cases. Don't be me. mk

Cropper, I have not noticed any elongation of the case after the M die and that is with caliper measurement of lenght. I'm not sophisticated enough in my reloading to check run-out--yet. Like I said I load competion ammo on a Forester coax single stage.

I haven't seen any mention of that in my reading. I got the idea from another member on this forum and so far I have just run plinking ammo that does well. For now I still reload competition ammo on a coax single stage and do all prep individually but that is far less volume than just fun shooting rounds. I do know that after the RT 1200 die and trim I can't easily get flat base bullets to seat without doing something to the neck so I adjust the M die to just barely allow me to get a flatbase bullet in with ease and after the M die the case still passes the case gauge without problem. You can overdo the M die and flare the neck too much but it won't then pass the case gauge. As you can see the case gauge in mandatory in my opinion to setting up my Dillon 650 "prep" toolhead. I have not noticed the M die stretching the case. Hope this helps.

I'm using a Lyman M die for this situation. You can set it to just barely expand the neck to seat the bullet. Also, cleans up the rim after trimming.

Thanks, Southwindva. To answer your question about the Lee die in station one in both toolheads is this. From what I have read the Dillon trimmer die is a full length resizing die that holds the case firmly for trimming with the Dillon 1200 trimmer. Other posts imply that using a full length resize in station one of the prep toolhead may make the case a little loose in the trimmer die and lead to inconsistency in the OAL. Many posts do as you do but only partially resize in station one to 75% or so to make sure the trimmer die holds the case firmly for trimming. The reason for a Lee die in station one of the loading toolhead is that I tumble between toolheads and the Lee removes any media from the premier hole. One thing I have learned from researching the topic is that there are many ways to reload 223 and most folks have worked out their method they are happy with. I do have some concerns about the Dillon trimmer die not being "tight" enough because I have had problems when single stage reloading 223 with rounds not chambering well in one or two of my ARs. I switched to a full length SB die and that corrected it. I haven't reloaded enough on the 650 to see if that will be a problem. Hope that explanation helps.

For the sake of completeness of this thread what I have done is to buy another 650 toolhead so I have one for prep and one for loading. I should now have room for all I want to do which is: Prep: Station 1--Lee Universal decapping Station 3--Trimmer Station 5--M die Load: Station 1--Lee Universal decapper Station 2--Powder Station 3--empty or powder check Station 4--Seater die Station 5--Crimp Thanks for everyone for your thoughts.

I thought about putting the M die in Station 1 in the 650 but my plan was to tumble the brass after prepping to remove lube and I had planned to use another Lee decapping die in Station 1 of the load toolhead to clear media from the flash hole. I got the idea for the M die from rjacobs on this forum who appears to be very experienced with 223 reloading but it may not be necessary. As I understand it the trimmer die makes the neck tight and the M die just barely flares it so the bullet will slip in without shaving and also cleans the neck up so additional chambering doesn't need to be done. From what I understand from reading all the topics and what is influencing my die set up plan is not to use a sizing die in prep toolhead because the trimmer die is a full resize and you want the case to be tight in the trimmer die for consistent trimming. I think to do what I want to I will need to use two 650 toolhead instead on the 550 for prep.

I thought about that after I posted. Probably a finishing nail placed to the correct depth and then bent would work. Thanks.

OK, guys I have read a lot on 223 reloading progressively and taking advice on this forum have decided on a two head set up on my 550 for decap and trim with RT1200 and then use Lyman M die for slight neck flare and clean up of trim followed by loading set up as usual on my 650. I wanted to set up the 550 for prep like this: Station 1) Lee universal decaying die Station 2) RT 1200 Station 3 or 4) Lyman M die Two problems occurred, first, the RT 1200 won't fit in station 2 with the decapping die in station 1. I even tried a regular sizing/decapping die. Not enough real estate. So I tried the trimmer in station 3 then I ran out of room again for the Lyman die in station 4. Second, even with the decapper in station 1 and trimmer in station 3 with nothing in station 2 or 4 when I try to attach vacuum to trimmer the pin that holds toolhead in place is in the way. I guess the practical answer is to do two 650 heads but my heart was set to use the 550 for prep and the 650 for loading. The way it is now I can't use the Lyman die on the 550 prep toolhead and I'm concerned about the toolhead pin not being in place and possibly messing with alignment. Any suggestions to my dilemma? Thanks, mk

I bought this bag at Lowe's for 14-16 bucks and made an insert like Brian above with a wood base and wooden dowels--18 dowels that I can stack loaded 38 super moon clips two deep. This also has inside pockets that I slightly modified to hold all my tools and extra parts. Outside pockets can hold extra moonclips and other paraphernalia we all tend to have. Inside there is room to fold up a brass bag so that everything is together. This gives me 36 loaded moonclips which is usually enough for most matches but if not everything is together to reload. This bag and a few extra rounds in a bag and I'm ready to go. Just wish I shot as well as I prepare:)

I make a solution of half mineral spirits and half Nu-Finish in a glass jar and keep next to tumbler. Shake and pour a little in every 3-4 times. I like to start tumbler and put solution in for a few minutes before adding cases so it distributes evenly throughout media. Nu Finish by itself is like glue.

I have thought about alternatives I have seen in discussions about this including one from McMasters-Carr but I will still need the bolt for it which I hope comes with new blades from Dillon.

OK, will order one when I get a trim die. Thanks all. mk