New to the Dillon 750...help.

[HammerliSP20]

I have the 650 for over a decade. I didn't load much with it compared to others. Close to 10k rounds but I always fear of primer detonation. But it's been functioning fine just a few rouge upsidedown primers. Maybe a few crushed ones and no detonation but I don't remember anymore. Too long ago. That said, I pay special attention if seating the primer feels 'off' but I still reload with ear muffs on.

I recently bought a750 so that I can have small and large primer presses setup at all times. It gives me a piece of mind now that I won't have to worry about full tube detonation. I did some dry runs with the primer system. Seems good to me except that when the tube is down to 1 or 2 primers, it will not always feed it. Don't know if that's normal but I doubt I'll let it get that low anyway when I'm reloading for real. Or maybe after a few hundred reloads, things will smooth out and break in properly.

UPDATE: I reloaded 30 rounds of 500 mag. Powder charger needed lots of tweaking. The rod that pulls it back down is bent in a wrong angle. Compared with a spare rod, the angle is off causing the powder arms to come in contact with the powder charger frame. It got hung up all over the place. Did lots of adjusting, lost the nylon square washer that sides the powder bar in and out. No idea where it went. The nylon square washer went missing for a bunch of rounds, causing even more binding and marred the powder charger frame by the time I caught it. H110 powder everywhere. lol! New starline brass incredibly hard to flare with powder funnel flare. Had to two hand the upstroke and hoping nothing gets destroyed. Gotta say, nothing bad happened. Tough machine. I thought 223 rounds were hard to resize and flare, but 500 mag is bad with the dillon powder funnel flare. The Lee flare is much better but unfortunately, unable to incorporate it. I experienced 2nd fired cases behaved much better. That said, powder got on the primer seating cup. Now I see small powder impressions on the face of the primer. Now, that's alot of force to seat the primer. Doubt that'll do anything overall, but it's annoying as heck when there is no way I can keep the 750 free of powder on its surfaces because of the sudden jolt when the case becomes free. Other than that, the primer feeding system works reliably until I get down to the last few. It may or may not grab a primer from the tube.

You'll have better luck with flaring brand new brass if you tumble it first in walnut or corn cob media. New brass tends to stick.

 

[john777]

You'll have better luck with flaring brand new brass if you tumble it first in walnut or corn cob media. New brass tends to stick.

Thanks for the advice. I read that too after the fact. Also reading around, reloaders rub a tiny bit of case lube on the powder funnel. I thought about doing it while I was having trouble but opted not to but it worked like a charm testing a few new starline cases. I was surprised I didn't tear apart the starline case. Popped out unharmed.

Man, the X750 had some major tweaking to do. It runs smooth now. It basically took the whole day wondering why the powder charger is operating so rough. It was getting hung up all over the place but still worked. I even lost that square nylon nut (bellcrank tube). I searched everywhere for an hour and decided to prefab my own. It works and then I found it stuck behind the powder charger metal swinging arms (whatever they are called). lol

 

[dearslayer]

So an update to my frustrations. I've been extremely busy dealing with life matters and I haven't had much time to play with my new toy the 750. It seems like I'm dealing with the same issue of either having too much flare on my case or not enough. If it's too much my cast boolits won't stand up straight and they just want to fall over resulting in me having to hold each and every boolit while it goes up into the seating die. If I have too little flare it ends up shaving my powder coated boolits. What are my options? I'm at the point where I'm not really enjoying this new press. I'm sure once I get the bugs worked out it will be an awesome machine but right now I'm just really frustrated

 

[Janeau]

You'll have better luck with flaring brand new brass if you tumble it first in walnut or corn cob media. New brass tends to stick.

Tumble it in clean media with some liquid wax added..that work like a charm for new or wet tumbled brass.
Flaring too much will also make the brass stick.

Special funnel exist for those - like me - who use a bullet feeder.( it come with it when you buy the bullet feeder) because case need to be flared more then. The funnel can be purchased separately also.

 

[fingers284]

So an update to my frustrations. I've been extremely busy dealing with life matters and I haven't had much time to play with my new toy the 750. It seems like I'm dealing with the same issue of either having too much flare on my case or not enough. If it's too much my cast boolits won't stand up straight and they just want to fall over resulting in me having to hold each and every boolit while it goes up into the seating die. If I have too little flare it ends up shaving my powder coated boolits. What are my options? I'm at the point where I'm not really enjoying this new press. I'm sure once I get the bugs worked out it will be an awesome machine but right now I'm just really frustrated

Only two things can cause that in a 650/750 either your powder measure isnt tightened down properly or your brass isnt uniform in length. On my 650 the locking collar on the flow thru die must be locked tight but the collar on the powder measure must be slightly loose so the measure can position itself centered with op rod travel.
If your brass isnt equal in length no mater how you set your die, the crimp will vary.