Comments by "LRRPFco52" (@LRRPFco52) on "Forgotten Weapons" channel.

  1. This video was freaking awesome guys. I would love to see more of this. That was a really good match-up, and shows how weapon weight and design plays a factor in practical efficiency. An SVT vs. Garand or G43 would be cool, with TT-33 Tokarev vs. Luger or the P-38 again. I really enjoyed this.
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  2. I think we need an AK reality PTSD group therapy club to help relieve some of the emotional pain and suffering many COD players have been forced to endure once they enter the adult age range, and are forced to view the shocking truth that Kalashniclaus doesn't deliver anything but empty stockings and broken dreams.
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  3. ***** You might want to go review some of the Stoner file footage of how he envisioned his designs to be used. They are opposite of what you describe, to include emerging from the water in an over-the-beach assault firing wildly from the hip, going prone in the sand, changing mags, and firing again.
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  4.  @6.5mm_is_the_best_mm  Yup. Cowboy Action shooters often load light for faster stage runs on steel plates with cast bullets. A hit is a hit.
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  5.  @6.5mm_is_the_best_mm  If you look at how infinitesimally short the time is from primer strike to the projectile exiting the muzzle and graph the pressure wave on the timeline, with piezoelectric metering, you see where the peak pressure is. This is why powder and bullet companies do so much testing to determine appropriate powder/bullet combos. You can load powder that is too slow for the bullet weight/length and it won't convert well at all, especially cartridges that are more straight walled.
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  6.  Caden Malcolm  I'm starting to think Australia has been mostly disarmed so China can roll through some day. They've certainly been bribing Australian, Filipino, Indonesian, and every other country's politicians off.
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  7.  @jemcnair76  Barrel length is not deterministic in burn rate for a cartridge. Chamber design and projectile diameter relative to the case diameter, followed by projectile weight, and action strength will determine powder selection. You can also use faster burning powders with driving band projectiles in cartridges that normally use slower propellant. What I think you meant to say was that Stoner developed the AR-15 around tiny stick powder, then the Army sourced ball propellant for follow-on contracts that raised the port pressure significantly, thereby reducing reliability once the cyclic rate departed from the happy window of timing that was set with stick powder.
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  8.  @snek9353  If you use a mirrored FAL BHO/Bolt Release inverted T or single piece device like on the XCR, with an AR-15 carrier, you could do it so the cut doesn't traverse across the sectional area of the wall between FCG pocket and magazine well. No real reason for it though. 7075 is better.
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  9.  @snek9353  Aerospace CF with new curing methods is where it's at. Some very interesting developments have happened in that space.
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  10.  @Joe-hz1nw  I was talking about a separate .40 S&W pistol. Agreed about 10mm being .40 S&W+. Glock and M&P run 10mm reliably. Match the Buffalo Boar to the recoil spring.
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  11.  @donsheckler127  The thread gap between the barrel extension tennon is also a limiter in chamber pressure due to hoop stress. 5.56 chambers have thick walls, but larger diameter cartridges using the AR-15 extension have thinner chamber walls, so you have to reduce the MAP or redesign the parts. Barrel extension tooth length and bolt lug length also limit MAP, unless you step up into exotic aerospace alloys like POF and now Ruger have done with their .308 Win AR-15s.
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  12. The spent cases and unfired ammunition found on the 6th floor of the TSBD were from a CIA contract in 1954 to the Western cartridge corporation. WCC never made that ammo before or since. The Warren Commission never explained where Oswald bought the ammo. It was uniquely-traceable because it had lot codes on the head stamps, which is very unusual for US ammunition. From everything I've gathered, I think CE139 was a prop. So was CE399.
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  13. A buddy of mine installed a Galil-style safety on his Rk92/S. He used a cartridge head for the purchase point on the lever, which was interesting. Rks are just boat anchors though, not fun to carry for extended periods or even do range work with in CQM.
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  14.  @twink5717  How much extreme cold shooting have you done with AR-15s? Because I’ve done a ton of it in Finland from 2005-2016, and I would take an 11.5” to 12.5” AR-15 over any other assault rifle design without hesitation. I would not choose an external 1920s piston gun due to debris ingestion and higher probability of parts seizure from freezing/condensation. But anyone who tells you AR-15s don’t do well in extreme cold is not experienced in this matter. Look at Canada, UK SF, and Norway as well.
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  15.  @muskratondatra8294  None of those things were usual and some are fictional revisions of history.
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  16.  @jattikuukunen  It’s so easy, even Finnish children can learn it! Äitini ei puhu minulle suomeksi : (
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  17. K-9 Handlers typically had 10” barreled XM177s in Vietnam once those became available, otherwise they carried M16s. There are photos showing this with US Army carrying XM177s, and USAF carrying 10” GAU-5/As (no forward assist).
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  18.  @suprlite  A .280 Enfield AR-10 would have been really nice, along with a .280 Light Machine-gun.
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  19. df2dot The Warsaw Pact AKs are all over the map when it comes to "standards", especially magazine compatibility.
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  20. I had a really mythical idea of the AK, until I started shooting and deploying with them. Reliability was not what it was touted to be, nor was magazine compatibility. It's a good design for taking the least amount of materials possible so that you can equip a large, underdeveloped nation with a standard assault rifle that will be used more like an SMG, but with the power to still reach out to 400m on rare occasions for mostly harassment fire.
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  21.  @GR46404  Yes. Case taper increases rearward thrust, which is especially no bueno in revolvers.
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  22.  @6.5mm_is_the_best_mm  Peak pressure occurs in the middle of the propellant column. This is where pressure transducer gauges are placed over the chamber relative to that spot. They used to use copper crusher gauges in test breaches to get an idea of chamber pressure.
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  23.  @6.5mm_is_the_best_mm  Exactly. Varget seems to do best in bottleneck cartridges loaded to full capacity. It's too slow of a burn rate for its density with most bullet weights even in 6.5 Grendel, which is interesting because Grendel typically works well with all the powders used in .223 Rem and .308 Win. like BL-C(2), H335, H4895, 8208XBR, AA2460, AA2520, TAC, WW748, etc.
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  24.  @paulzaborny6741  Russia has never been able to mass produce a rifle that has very high chamber pressure. 7.62x39 AK/AKM is 45,000psi. 7.62x54R is 56,500psi, which is high for them. They're stealing washers and driers from Ukraine to get circuitry from them.
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  25.  @FeatheredDino  Real AR-10s from back then are more reliable than most of the modern after-market parts guns. I've been working with AR-10s, SR-25s, aftermarket imitations, and Hk417s in high volume since 2002, have owned at least 6 .308 Win or .260 Rem versions of them over that time, repaired, accurized, and trouble-shot quite a few of them. Big challenges from an engineering standpoint are: * Bore volume vs projectile mass and propellant mass * Bolt and carrier mass ratio (AR-10 was designed on 1:3 ratio.) * Cartridge stack mass resistance to spring lift, especially under the torque moment from the rifle counter to the rifling direction AR-15 in 5.56 doesn't have those problems. I can't recall any notable malfunctions with post-1996 ArmaLite Inc. AR-10s, SR-25s, or my GAP built .308 and .260 Rem. DPMS LR-308s and LR-260 had problems. The old school Dutch ArmaLite AR-10s are very pleasant to shoot, unbelievably accurate, and balance well in the hands.
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  26. ​ @cash_711  Or propped up to destroy Germany from within...?
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  27. Here are all of the duty positions in an Infantry Rifle Company that will not want to carry it, nor should they carry it: CO 1SG XO Co RTOs Drivers FO NCO Supply SGT Supply Clerk Rifle Platoon Leaders Platoon Sergeants Combat Medics Forward Observers USAF JTACs Grenadiers Weapons Squad Leaders Assistant Gunners Ammo Bearers Anti-Armor Weapons Specialist Mortar PSG Mortar Team Leaders Mortarmen This leaves only: Rifle Squad Leaders Rifle Team Leaders Riflemen (It adds weight to each of these duty positions, while reducing ammo carrying capacity). Auto Riflemen will carry the new NGSW AR belt-fed.
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  28.  @tstststs  When you move the gas port back from 12” to 7”, the port pressure increases dramatically. You can meter that port with an even smaller port size and have more pressure and gas volume to cycle the action. CLGS has smaller ports than RLGS, but are still gassed harder.
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  29.  @manchagojohnsonmanchago6367  Stoner didn't copy the Ljungman as is commonly believed. Ljungman uses direct gas to push the carrier rearward. Stoner system uses internal expansion between the bolt gas ring flange and the carrier to generate inertia. It's described in the Stoner patents, which are searchable now.
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  30.  @olrikparlez3152  We adopted a child prodigy that the Air Force, SAS, and SF adopted early-on. Until a gifted designer comes along and their ideas catch on with the right alignment of personalities, we'll continue to plateau.
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  31. Most people are unaware of the refined ArmaLite/Colt AR-10A of 1959, after feedback from demos all over the world. It was a smaller-framed AR-10 with a smaller BCG. Colt bought the Stoner patents with the intent to mass-produce that rifle, and began tooling up for it. McDonald sent them a wire to cease tooling up for the AR-10A, because he was ready to start filling orders for the AR-15 from several armies.
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  32. When you only have a factor of safety of 1.45 in your pressure containment vessel, you should expect more results like Scott's. An AI .50 BMG or Barrett would chug along after that with minimal indication to the shooter anything unusual had happened. 80ksi/55ksi= 1.45 FoS That's not enough. FoS of 2 would be more ideal for .50 BMG due to propellant volume, projectile mass, and pressure containment mass.
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  33.  @XtreeM_FaiL  Same with Rk76 tube-folder. Even though Rk76 is sheet steel, it might as well be billet because it’s double the thickness of any stamped AK I’ve ever seen, and I’ve seen a lot of them from all over the world.
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  34.  @djl5634  MP44/Stg44 is absolutely a constant recoil operating system, as is the much older Suomi Kp31 9mm SMG.
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  35.  @djl5634  Here you get to learn the difference between the locking mechanism and recoil principles. If you put the cyclic rate on a timed animation, it would make sense by demonstrating the balanced recoil system.
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  36. I just weighed a carbine lower with B5 SOPMOD, buffer and spring removed: 1lb 15oz. With JP SCS, it’s 2lbs 6oz. LaRue MBT-2S, SPR grip. Standard forged A2 lower. Carbine RET, standard end plate, standard lock nut.
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  37. I just pulled a clone 602/605/XM-16E1complete lower of my 605A retro, with a Type D transitional phenolic resin/nylon stock, with rifle buffer and spring. 2lbs 5.5oz. With buffer and action spring removed, it’s 1lb 14.6oz or 1.915lbs.
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  38.  @PBVader  Have you ever tried to get an AR-10 to run with a half-size port? Even 75% sized ports will short-stroke the gun with many factory loads, especially in cold weather. So normally on a .308, you'll have a .094" port at RLGS, 20" barrel. I've seen companies try to get away with .086" at that location and short-stroke the gun. Suppress it with accumulation and it will run, but unsuppressed in the late fall and winter shooting 135gr-155gr will short-stroke it. The term "over-gassed" is generally a misnomer, unless the port is too large even for hot weather and lighter loads. There are a lot of parts-bash guns with slip-fit gas blocks that no reputable manufacturer would let out the door.
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  39.  @PBVader  I can see .076" ports at MLGS 16-18", not 20" RLGS, unless I'm missing something. For reference, I've been really big into AR-10s since the late 1980s, have owned, shot, and worked on many of them, to include Dutch ArmaLites, Eagle Arms ArmaLites, SR-25s, DPMS, Iron Ridge Arms, GAP, ASA, JP, Bushmaster BAR-10, RRA LAR-8, DPMS GII, Savage MSR-10. I've had the gas port diameter conversation with multiple upper tier manufacturers, and have measured port diameters on a lot of barrels. Maybe my memory has just gone totally TU, but those numbers sound way off to me.
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  40.  @PBVader  The Savage MSR-10 has an adjustable gas block with mechanical advantage, not one of the carbon lock set screw jobs. I use Bootleg adjustable gas carriers in the AR-15 shooting suppressed or on MLGS 18" for the reasons you bring up.
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  41.  @Kydenius  I've done years of high-volume courses Suomessa where attendees brought 11.5"-16" AR-15 carbines, which ran like raped apes in -27° to-30°C in the middle of winter. The weight difference, balance, and user interface is far superior on AR-15s. I'd like to see a Finnish-built FDF AR-15 variant. They just announced a locally-produced AR-10 DMR/Sniper System for FDF. I would have preferred to see a 6.5 Grendel AR-15 in that role though. AR-10s can get really heavy, whereas the SVD is nice and lightweight. It allows you to shoot and move better, displace rapidly rather than being fixed in one position. That was a big lesson the Russians learned in WWII so they wanted to keep the lighter weight similar to the SVT-38/40.
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  42. Russians don't even know about the Winter War. They are taught that fascist Finns invaded poor Russia. There are maps of this in the Central Red Army Museum in Moscow, with huge blue arrows coming from Finland down into Russia.
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  43.  @Isaac-ho8gh  How much hands-on experience do you have with the Rk92 and Rk95? They are very well-built weapons, but they are boat anchors with sucky AK ergonomics. The curved AK magazines are cumbersome and bulky to carry, let alone heavy when loaded, and not fun to hump in the snow or any terrain for that matter. Converting the Rk92 and 95 receivers over to STANAG magwells that still work with Rk bolts would be a waste of time. It’s much easier to acquire new carbines like this.
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  44.  @twink5717  Nothing you describe matches my experiences with M16s, M4s, and AR-15s in extreme cold over the past 30 years. I first started shooting AR-15s in high volume in 1987, but didn’t see true extreme cold conditions until 1996 in Korea. I later spent a ton of time with AR-15s in Finland from 2005-2016, running them in high volume courses, especially in the winter (hard to schedule courses in a place where it’s winter much of the time). Of all the assault rifle designs I’ve used since the 1980s, 11.5” or 12.5” AR with a suppressor would be my go-to in Finland.
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  45.  @jfess1911  These carbines are every bit as accurate as rifles, but squirrely in the hands so harder to hold steady from some positions. I know some services referred to them as SMGs, but I really think SMGs require a pistol cartridge to fall into that category.
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  46. It was great meeting you guys at SHOT. Looking forward to more videos and tests from Forgotten Weapons.
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  47.  @suprlite  The only army that has chosen one that I’m aware of is the Serbs with 6.5 Grendel. 6.8 SPC is used by Saudi Palace Guards in LWRCi PDWs.
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  48. Michael anthony They test limited numbers from production batches, and the test personnel have too much blood in their alcohol. Ever been there? We're talking about developing nation-level manufacturing.
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  49. Great video again. Looks like there is a Receiver Extension Tube roll pin hole on the right side, but not the left.
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  50. We still don't know what rifles and calibers were used on JFK, James Tague, and Gov Connally.
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