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Everything posted by gunfun

  1. gunfun

    Short Barrel Conversion Advice

    1) 8", threaded for rem chokes. Keep the design of the gun simple. Don't add 10lbs of junk to it. Have a stock that is inline with a decently large footprint. Reliable is mostly a function of whether they moved the gas system properly. If they do it right, it will run any ammo above a certain energy threshold, which will be toward the hotter end of cheap trap loads and up. 2) Tromix, evlutions llc, lone star arms... 3) Get a trust, no exceptions. Just get a trust and get started. It isn't hard or scary. I do these as a pro, and you are a fool to do it without a trust. Sooner you start, the sooner you finish. Don't do a DIY trust or some random form your gunshop has on the counter. You aren't a lawyer, and neither is Jimbob at the shop. Some of the online ones are OKAY, but there are good reasons to have one made to order by someone who knows your situation, the law in your state, and does them all the time. If you get the gun before your stamp clears, some dealers with ranges will let you play with it at their range while you are waiting for the crown's permission to take it home. After you do your first stamp, you will realize that it was a nuisance to pay and weight, but it isn't as big a deal as most people think. 4) I would keep it and get an SBS. As for whether to commission or purchase- that's a question of cost and what's available at the time, and how specific you want your setup to be. Can't hurt to ask for quotes, and wait times. I see tromix builds show up surprisingly frequently from people with more money than attention span. They buy an expensive custom, shoot it a couple times, chuck it in the closet for a year or two, then get the itch for something new and hawk it for 1/3 of what it cost to get built. I would kind of expect that any builds with the red jacket label on them go for a discount now. Quality varied. Pretty good before show, not as consistent after. As with the answer on #3, sooner you start the sooner you finish. Custom orders often take a while, but that can be about even with the tax stamp wait time, so not as big a deal as you might think.
  2. gunfun

    80% ??

    And the right grade of steel, and the ability to precisely heat treat. ARs are easy to make because all the pressure bearing components are non serialized in USA. Those are the hard bits to make safely at home. Europe doesn't care about receivers for that reason, they care about barrels, bolts, trunions, etc. Hence serials on those parts in EU guns. Import AKs tend to have serials on both parts as a compromise to the US system. The S12 and derrivatives got approved using the system from Europe, without any thought towards making them easy to clone or remake. There's no money in that for the manufacturer, and no surplus market, since it was never a mass issued gun to turn into parts kits. Further, all the pockets in an 80% Ar receiver are vertical plunge operations. Everything tricky has already been done. An AK trunion has a lot of complex geometry that isn't just going to happen with a drill press. It would be pretty hard to measure without custom jigs, let alone make. Part of why ARs are clever, is that he borrowed johnson's clever thinking about how to make easier to machine precise lugs, then made it in two pieces, so that it is a single broaching operation which can be cleaned up on a lathe, then joined to the barrel, then heat treated as a unit.
  3. * enriched soil. I'll take all of your lead.
  4. Yeah. That's great. I wish I was there with you. Have an awesome hunt.
  5. gunfun

    A trick for reloading buckshot

    Thanks. I still want some kind of auto counter or dispenser that does it with a pull of a lever, like a powder measure drum.
  6. I made this video and review for another website, but it occurs to me that a few of the people here might appreciate it. I've been doing this method since about 2013 and it works really well: This is by far the fastest most reliable way I have tried to get the right number of pellets in the right place.
  7. I usually go with this one, but I have used the berger calculator to double check too. https://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi A lot of 1-10 precision guns use the FGMM 168 match king as their recommended load for factory bench marks. i.e. the LWRC REPR that I was playing with a few years ago. Arguably 168s are "over stabilized" in 1-10, but they seem to shoot well out of pretty much every 308, which is why they are so popular as a standard. I don't pretend to expertise, but I think of 165-170 in 308 /30-06 as the overlap load which is likely to give good results in a gun chosen at random, since they are right in the middle of the overlap between what the common twist rates are good at. I don't pretend to be a good precision shooter, though I am working to improve. My take on this topic is that for 308, if you are wanting the ability to shoot cheap ball, and also do some precision shooting, potentially using some of the ELD bullets, 1-10 will work well with the long range precision loads (& heavier hunting bullets), and well enough with the cheap stuff too.
  8. Wouldn't a 1-10 be better for that range? I thought 1-12 was more suited for 150-168grn
  9. Put a chunk of plastic pic rail on top of a baseball cap bill. Maybe a counterweight at the back.
  10. gunfun

    Slide fire?

    So a guy reading the article from TFB which basically recaps what I said months ago. It's a straight up ultra-vires action.
  11. Tulips are good once they get going. Look kinda crummy most of the year though, after the flowers are gone. Also you will need to know if your area freezes hard enough to kill the bulbs. Some places you can leave them out, other places you have to dig them up and stick them in the cellar for the winter.
  12. I always thought that using combination features would be a good idea. I.e. the berm would be the mound for a sweeper turn on a dirt bike track. The interior of the dirt bike track would be paintball course, with a fair amount of the jumps doing double duty as cover. The pond idea is nice, and would cut down on the area you need to brush hog. Unless you are in mosquito country. Perhaps some butterfly bushes to make it smell nice? I could also see wind break trees being a good idea. Also shade trees for wherever your bench/ firing line is. I agree with evl, that you don't want to add future ongoing chores, so only put in stuff that basically takes care of itself.
  13. gunfun


    I think that would be helpful. They aren't infallible, as what happens is the spammers will have a human teach their bots the answer, but they do weed out the less sophisticated spambots. Suggestion: What end of this picture is facing you? 1) muzzle 2) butt
  14. gunfun

    Knockdown power and pattern?

    1, "knock down power" is a very subjective and debatable thing. 2 for steel plates, there's muzzle velocity, shot weight, and pattern density. If any of those is lower, the plate is less likely to fall. If any is higher, then more likely. 3 a 19.5" barrel is going to be maybe 300 FPS lower than a 26" barrel with most light ammo. That's just a gunpowder thing. The action doesn't use enough gas to make a difference in velocity, and the shell is shucked after the shot is out of the barrel, so it also doesn't affect velocity there either. If you want more velocity, choose a spicier shell. It's that easy. You may prefer more mass though, so keep reading. 4. Chokes aren't all the same. Pattern yours https://www.chuckhawks.com/pattern_shotgun.htm You might have a wider pattern, and it might be offset from where you think you are aiming. Only way to know is to do the work and know. You haven't said what choke you are using, but there are a few adapters out there that let you have an assortment of either rem chokes or winchokes. I like the DPH choke adapter with full winchoke, but your application might want something tighter or looser. It's the combo of specific ammo and specific choke at the range you plan to shoot. 5. Easy fix is to try a couple of chokes that give you a reasonably dense pattern at the ranges you plan to shoot. Then chose a load with a little more pellets at about the same velocity. If you use 1 1 /4 oz loads at 1200 FPS, you will have a pretty good smack, and still less recoil than a lot of the other semi autos, and way less than the pumpers.
  15. If the bolt was upside down and /or grit held the firing pin in the forward position, it could have either slam fired on chambering, or fired without the lugs engaged?
  16. gunfun

    Howitzer70 brake

    First I have heard of it. I can say from the pictures that it isn't optimized for 12 Ga, but would probably do a little bit. If you look at the brake testing done by me, by Fitty, and Vadim, and T&N.... You notice that nearly all the gas vectoring stuff happens in the first inch past the muzzle. Lots of gills close together does the most After that inch, everything is working with so little gas pressure that it may as well not be there.
  17. The AK market is smaller: It used to be the tightwads, and those who had a mythical idealized view of Russian simplicity/durability/reliability. That latter group is very traditional, and posts stupid "nyet rifle is fine..." at EVERY improvement. Now ARs are way cheaper than AKs, and so the tightwads are gone. That leaves the traditionalists. You don't wow that crowd, you sell them old ideas done as conventionally as possible. (Or convince them that the Romy M10 with tapco furniture is the traditional formula because they don't know better.) The AK-103 has been around long enough to be "traditional", but is still seen as "High end". That justifies the higher cost of an american made AK.
  18. I was referring to CMMG's radial delayed AR bolt patent for PCC.
  19. There is a small difference. Blue printing is making the whole receiver precisely conform to the dimensions as claimed in the drawings. Since you can't add material, this is generally at the small end of the dimensional tolerance allowed. Truing would be a part of that, but not necessarily the whole thing. Generally truing means getting something straight or square. In the case of rifle truing, that's generally getting the barrel on axis with the reciever, and making sure it is fully supported by contact with all the bearing surfaces, which are also either concentric or perpendicular to the line of the bore. Usually also the bolt face and lugs. So you could get the areas that matter, and ignore the other spots. Possibly supporting contact with crooked metal by inletting the stock to fit, or using glass filled epoxy to match whatever irregular shape it happens to be.
  20. Nitrided barrels will last longer yet, and the 5r rifling pattern gives a moderate gain in barrel life too.
  21. Portland's a great place to live. They vote stupidly though, which is why downtown has lost most of the business to beaverton, which instituded even worse policies, and the business moved to vancouver, etc. If I had to live in a big city, it would be my top pick. It's just more laid back and less hassle. All the benefits of a big city with far less of the downsides. Interesting art and food, and stuff to do, but not outrageously expensive to do it. you can go just about anywhere in town in 15-30 minutes from anywhere else, once you learn how the traffic behaves. Just about anywhere in town you are within a block or three of actual forest. Fuel price is reasonable, food prices are low. Rent and property taxes SUUUCK. Freeway speeds are stupid slow, but all the street speeds are distinctly fast, and flow well. Don't bash on the whole place for one dumb thing that happens there. Portland isn't antifa. It's just a big enough place that of course some of the wackoes from any group are going to be there. Mostly, people leave you alone and let you do what you want if they aren't into what you're into. If they do like what you like, they will probably good naturedly give you the nod, or join you, or invite you along with their next thing. It's sort of anti snobbery, libertarian living on a personal level. Friendly, but not in your business, and not hurt if you want privacy. They vote for people who want to get in your business and control you, but that's just cognitive dissonance. Any time I go to a big city, I have the following experience: Phase one: This place is pretty neat. Oh yeah, I 've been wanting to go to (interesting thing to do/see/eat ) for years. Maybe next time I come back. Phase 2: I can't afford to do any of the things I wanted to do here, even if I could get to them. Phase 3: Stuck in traffic moving at a painful pace, within sight of 5 interesting things that would take hours to get to. Phase 4: I never want to come here again, and am considering whether I could get away with destroying the city in some kind of mass atrocity. Many cities skip the first two phases. Portland usually skips #3. Even if you get stuck in freeway traffic, the aggressive hostile vibe just isn't in the traffic. A turn signal is not a sign of weakness telling the chick in her mercedes SUV to cut you off. There are plenty of places and things that are out of my price range, but there is always something pleasant to do for free to medium, enough that an individual or group can have a good time regardless of their means. I always leave portland wanting to come back soon, and that was even true while I lived there. It's like you take all the best parts of the way movies try to make NYC look exciting, and Mayberry comfortable.
  22. gunfun

    Rotary Barrel Systems: Yay or Nay?

    I think that statement is overly broad. There may be some types of jams which require gunsmith tools and methods, but that's true of every short recoil locked pistol system. It wouldn't be true of all jams, so I don't know which particular type of malfunction he might mean. I suppose debris completely clogging the camming groove would render the gun very hard to force open, but I think most of them seal that area, so that no objects big enough to cause that could get in there. Thus if it were a lot of fine dirt, the cure would be flushing a lot of water through it. With most pistols, their locking block, or vertically moving locking surface can be blocked by stuff, but usually either flushing fluid or by rattling the debris out of the way, or simply by applying force to the slide can bash it out of the way. (possibly damaging things if the debris is stone or metal.)
  23. gunfun

    Rotary Barrel Systems: Yay or Nay?

    The gut though is that rotary pistols have been around since semi auto was a thing. There was basically a mexican rotary 1911 as early as the 20s, and a few european examples. If there were a real advantage, I think they would be more popular. I think any advantage is probably mostly perceived. And hey, if you placebo yourself into shooting better, I guess you are still shooting better. Half the stuff the precision guys do is on that principle.
  24. gunfun

    Rotary Barrel Systems: Yay or Nay?

    A few guys here are really big fans of an Eastern European gun that is rotary. Grand Power. Beretta has sold the PX4 series which are rotary except for the smallest model. I have no personal experience, with either, but I would like to try them.
  25. gunfun

    Door buster

    No, old friend, our orange commander and NRA and BATFE declared by fiat that we can't have the bumpy toys. If you have yours, it is supposedly a felony. I think they would have the burden of proving that their administrative action redefining the enacted statutory language is in fact legal, but I ain't interested in being the test case on that. Breaching rounds are usually sintered lead powder. I have seen them at places like SGAMMO if you want some.