tmauto769

Same here, got mine all sent in, and that will be it for me.

From what I have found about Concave base or "hollow base" bullets is that to get the weight with the cavity the bullets need to be made longer, therefore you should be reducing the charge a little from the typical charge weights for flat based bullets. There really isn't a whole lot of load info out there on concave base bullets. I bought 4k of FMJ RN concave base 115gr bullets a couple of months ago and have been liking them. I worked up to 6gr of power pistol with them which seems to be a bit hot. So I backed it back down to 5.7gr of PP and they have been great other than the massive fireball that comes with using PP.

Also starting out, I don't think you should be using titegroup, while it is a great powder it doesn't have a wide range between min and max loads.  Maybe try using power pistol, although it does suck for the flash it produces, it has a huge range between min and max. so there is more room for error. I also use a shop vac for powder without issue.

July 13th

I picked one up at buds, and I am not impressed with it. Numerous FTE with 4 different kinds of ammo. I am hoping the thing just needs to break in but so far kind of disappointing. I need to clarify the FTE as well, it will cycle, but for some reason the empty comes out of the chamber but doesn't eject, then it is in the way of the new round getting stripped off the magazine. So as you can already guess this makes for a pain in the ass to clear.

Thanks all, I appreciate it.

My understanding of this is yes, as long as you keep an upper in the caliber/barrel length you got the stamp for. I am not wanting to keep a short barreled upper in .223 around if I am not going to use it.

I want to swap it to a .300 blk, vs .223. The reason I am asking about the letter is so I don't have to keep a .223 upper around "just in case". The stamp has 5.56 on it, and I didn't want any grief if I were asked to see the stamp by someone who matters. This particular lower says .223/5.56 and not "multi".

Is there a form for doing this, if not how do you go about notifying the atf that you want to permanently change the caliber on an already tax paid sbr?

Does hornady even make the bullet feeder for rifle? I thought I read in my manual for the lnl ap that was for only pistol. I have a bullet feed die for 9mm and could never get it to feed consistently, although it isn't without is problems, the case feeder works good enough though. I would recommend tumbling over a sonic cleaner just for times sake. You either have to let it dry quite a long time or oven dry it and that is another step that you are trying to avoid. I haven't used mine to clean brass in awhile, but it does an excellent job of cleaning bolts though.    Edit: I guess they do make one just googled it. don't know that I would fool with it personally though if it works like the pistol one I have.

Had one wish I wouldn't have got rid of it now. I think I am going to put another one together. As stated spend a little more on a better barrel. I had a daniel defense barrel on mine and it was a great shooter. I personally could never get the 6.8 to feed right out of any of my 5.56 mags, be it gi or polymer. PSA had some cheap 6.8 mags the other day.

Good idea, they may very well do that. I think they learned the error of their ways with the first one. If you don't mind reply back with their answer, as that may sway my decision on getting one now. When I get mine it will be going in the night stand, I just picked up a rami the other day, so I will be carrying that.

This is the gun I am looking at as a host as well. You got one of the older ones with the lower sights, the newest ones on their website have the taller suppressor sights. That is the very reason I have held off on buying one myself. I am waiting for the taller sights. I had 2 P07's and they really are great guns, although a little thick, but the P09 isn't really something that I personally wouldn't  be carrying anyway.

If you can meet me in knoxville this week, I can give you a 3lb coffee can full of mixed .45 brass. I have enough. If you want it send me a message and I will give you my phone number. edit: they are not cleaned, and are just range pick ups.

I got the Thompson Machine Thirty, (actually I don't have it yet, waiting for the stamp) from tennessee silencer. I don't think they do layaway though.

I was under the assumption that it had to be done before it was assembled as an sbr. I had my engraving done while I was waiting for the stamp. It sat in pistol form until I got the stamp.   edit: n/m i just seen where it said it wasn't a lower. 

If it is a 75B, you might not like it if you did feel the trigger. I put $260 into my matte stainless 75, to get a really good trigger. The stock one had way to long of a reset and was a too heavy a pull for my tastes. The cajun gun works short reset 2 system helped that a bunch, along with a cz customs hammer, main spring, which then requires an extended firing pin with a lighter spring, and an adjustable sear. It was a lot more than I bargained for but that is one sweet shooting gun now. ;)

https://cajungunworks.com/

I have lowers as cheap as andersons all the way up to a billet seekins. they all work and work well no problems with any of them. But with that being said the seekins has a lot tighter tolerances. For example when I pulled my timney trigger out of a spikes lower and dropped it in the seekins, at first I didn't think it was going to fit, it slid in without forcing it but it has to drop straight in. In the spikes you could just throw it in there. As far as comparing an anderson to a spikes, no difference what so ever other than the logos and serial #. I have the spikes upper on the seekins right now and it is a different shade as someone said above. On a low to mid range gun it wouldn't bother me so much, but this one I have a lot invested in it so I am going to have to fork out some more $ for the seekins upper. I think you are better off spending more of your money on good barrel vs. more money on a more expensive lower. Like a seekins match, ultra match, or Rainer. I had a 6.8spc Daniel Defense barrel that was a really good shooter as well.

I have big hands, and I have often thought the same thing about CZ's comfort. I have the Tactical sports model and that one is quite a bit bigger than the 75's, but both feel great and shoot very well for me.

I had an ultra carry II for a short time. I wouldn't trust my life to it for sure. To many ftf, that gun was picky about the ammo you put in it. Just shooting it though, it was accurate when it wasn't having issues with the ammo.

I prefer a hammer fired gun as well. Polymer or metal framed doesn't really matter so much to me though. Even though I carry a striker fired gun, just shooting for fun I don't really like the feel of the striker fired guns trigger. I know plenty of people that feel the opposite. I have CZ's, sigs, and beretta's, I have to say that I prefer the cz's over the rest.

Just out of curiosity how long is that barnes bullet you are using? 

You might be forcing the bullet into the lands just a bit and on retrieval it is sticking and pulling it back out of the case. I have the same rifle and it indeed has a shorter throat than normal. I have the Hornady COL gauge and the special case for it, and I found I was getting irregular measurements even with that until I inserted in easy. With a 175gr BTHP from rocky mountain I was getting a 2.750" oal, and a 2.193" oal @ the ogive IF I am reading my notes correct. With that being said, I don't have a lot of time with this rifle yet, and the only time I took it out, I was having some scope issues, so I didn't waste anymore time fooling with it that day. You may try to resize the case so the bullet has a tighter fit allowing it to stay put, just a thought.

I have been wondering this exact thing since this 41p deal has come up. I thought when I sent in my form(whatever) to the atf they did a background check. Do they not?