Latest activity
Israel/iran
- By Jethro3898
- The Bear Pit
- 1659 Replies
Iran shot down an F-35.
The photo show the aircraft to be the size of a C-130.
Or Iranians that small?
View attachment 8709950
Their propaganda ain't propaganda-ing
Israel/iran
- By Mr.BR
- The Bear Pit
- 1659 Replies
Its not the bunker buster bombs it's about the need to fly a bunch of B2 over the targets to drop them bumker busters , to even have remote chance of success against most Underground facilites, F35 or even F15 just cant drop anything sieable enough to dent these facilites. Bibi's plan was always dragging US into the war.
The conflict between Israel and Iran has entered the phase of a war of attrition: Tel Aviv hopes to drag the United States into it, - The Economist.Israeli strikes on Iran's nuclear and missile sites since June 13 have so far affected only a third of the infrastructure. Deep underground nuclear centers, including Fordow, remain intact - without American "bunker" bombs, Israel may not cope.The main thing for Israel now is to maintain momentum: if it manages to maintain the appearance of success, this could push President Trump to participate in the war. But if the rate of destruction of nuclear facilities slows down and the number of victims increases, Trump may try to end the war before Israel achieves its goals, writes The Economist.
The conflict between Israel and Iran has entered the phase of a war of attrition: Tel Aviv hopes to drag the United States into it, - The Economist.Israeli strikes on Iran's nuclear and missile sites since June 13 have so far affected only a third of the infrastructure. Deep underground nuclear centers, including Fordow, remain intact - without American "bunker" bombs, Israel may not cope.The main thing for Israel now is to maintain momentum: if it manages to maintain the appearance of success, this could push President Trump to participate in the war. But if the rate of destruction of nuclear facilities slows down and the number of victims increases, Trump may try to end the war before Israel achieves its goals, writes The Economist.
Moving forward, weekend scammers
- By LeftyJason
- The Bear Pit
- 55 Replies
But what have you done for Frank this week that is better than what @Sparky does?Now I'm hurt, last week I was your favorite with Maserblades #2.
Movie Theater Battleship
- By Maggot
- The Bear Pit
- 14 Replies
Earth gets invaded by aliens (at least they dont look like the standard Sigourney Weaver scorpions). Looks like we're gonna buy the farm but then they reactivate the Battleship Missouri and fuck up some aliens. Oh rah.
Total make believe but fun and it will make you proud of humanity. Wait, did I really say that?
Total make believe but fun and it will make you proud of humanity. Wait, did I really say that?
Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1
- By Dirty D
- The Bear Pit
- 306092 Replies
I was in Sedona Saturday morning watching a bunch of white guilt soaked liberals showing up to the No Kings protest in their German SUV’s and gold watches.
737R 6 Dasher Build - Rounds Sticking In Chamber
- By Havoc35
- Bolt Action Rifles
- 20 Replies
So, in reading your responses and getting further into this I bought a few things.
Bore Scope (@JR1200W3 you'll be happy to know)
Hornady OAL Gauge
Caliper Comparator Kit
Some additional background, after I had built my rifle I bought 500 projectiles (Berger 105 hybrids) to not only use as testing but to use the remainder for the prairie dog trip. Not a great choice for prairie dogs by the way. Of those 500 I shot about 250 in testing and load development. At no point during the development did I feel any rounds entering into battery hard or did I have rounds sticking. The final loads were shooting at about 2980 fps with a SD of 5. I then bought another 300 rounds to make up the difference (I have 500 cases of Alpha) and loaded those to the same spec (32.5gn Varget / .010" off lands / .267 neck bushing / COAL: ~2.440).
Measurements I made are below. My comparator .240 tool head ID measures about .232" ID for reference. My dies have been seated in a dedicated XL750 tool head and my micrometer setting has been documented from the first load, everything is tight. I measured a sample of 5 of each category.
2 things stand out to me here.
Projectile Ogive length (stand alone)
-First, the differences in projectile lots seem pretty surprising. Could it be that if the ogive is over .010" different, that the profile could be off as well?
-Or is it just a OAL variation at the base?
-Is this normal?
Lengths before and after reseating
-The cartridges after I reseated them still stuck in the chamber. This time I assisted them back with a cleaning rod but they entered into battery hard and ejected hard. I lowered my seating micrometer another .005" and they no longer stuck. So it seems like the engagement distance is shrinking somehow since these same rounds were cycling fine before.
-Both before and after reseating I could shake the cartridges and hear the Varget moving around, so they were not compressed loads as I had originally thought.
-Something pushed these projectiles forward .010", whether that's due to the Varget expanding in the heat or something else it seems less plausible but still possible.
The next two topics really alarmed me...
For the OAL gauge I resized a case, chucked it up in a lathe, and drilled and tapped it for a 5-16x36. I also opened the case neck up so a projectile could glide through it without resistance. I cannot get this thing to be repeatably accurate. If I insert a round backed way off, seat the case firmly, and very lightly seat the bullet to resistance I get measurements from 1.705-1.715". If I do the same and jam the projectile into the lands firmly I get measurements in the 1.8110-1.825" range. The later makes more sense but its a pretty inconsistent range and with jamming it like that its not telling me actual contact.
I bore scoped prior to cleaning and post cleaning. The barrel cleaned up really well in the rifling, crown looks fine, chamber looks ok, but I have pretty nasty fire cracking right at the opening to the throat on the very edge. I don't see it protruding past the edge very far. Mind you I only have 400-500 rounds through this thing. Is this an indication that my loads are too hot? I've seen a lot of data for 26" Dashers with velocities between 2900-3000fps, I thought that was a normal expected range for Dasher, is that not the case?
Bore scope video link: Login to view embedded media
Now I'm completely comfortable with the notion that I got the land jump measurement wrong and that I was likely closer to the lands than I originally thought. That being said, even if I was .002" off I didnt experience issues until my trip. Could it be possible that the fire cracking I'm seeing is actually closing the ID of the throat due to material expansion? Why do I feel like the crazy hair guy from Ancient Aliens?
Bore Scope (@JR1200W3 you'll be happy to know)
Hornady OAL Gauge
Caliper Comparator Kit
Some additional background, after I had built my rifle I bought 500 projectiles (Berger 105 hybrids) to not only use as testing but to use the remainder for the prairie dog trip. Not a great choice for prairie dogs by the way. Of those 500 I shot about 250 in testing and load development. At no point during the development did I feel any rounds entering into battery hard or did I have rounds sticking. The final loads were shooting at about 2980 fps with a SD of 5. I then bought another 300 rounds to make up the difference (I have 500 cases of Alpha) and loaded those to the same spec (32.5gn Varget / .010" off lands / .267 neck bushing / COAL: ~2.440).
Measurements I made are below. My comparator .240 tool head ID measures about .232" ID for reference. My dies have been seated in a dedicated XL750 tool head and my micrometer setting has been documented from the first load, everything is tight. I measured a sample of 5 of each category.
2 things stand out to me here.
Projectile Ogive length (stand alone)
-First, the differences in projectile lots seem pretty surprising. Could it be that if the ogive is over .010" different, that the profile could be off as well?
-Or is it just a OAL variation at the base?
-Is this normal?
Lengths before and after reseating
-The cartridges after I reseated them still stuck in the chamber. This time I assisted them back with a cleaning rod but they entered into battery hard and ejected hard. I lowered my seating micrometer another .005" and they no longer stuck. So it seems like the engagement distance is shrinking somehow since these same rounds were cycling fine before.
-Both before and after reseating I could shake the cartridges and hear the Varget moving around, so they were not compressed loads as I had originally thought.
-Something pushed these projectiles forward .010", whether that's due to the Varget expanding in the heat or something else it seems less plausible but still possible.
The next two topics really alarmed me...
For the OAL gauge I resized a case, chucked it up in a lathe, and drilled and tapped it for a 5-16x36. I also opened the case neck up so a projectile could glide through it without resistance. I cannot get this thing to be repeatably accurate. If I insert a round backed way off, seat the case firmly, and very lightly seat the bullet to resistance I get measurements from 1.705-1.715". If I do the same and jam the projectile into the lands firmly I get measurements in the 1.8110-1.825" range. The later makes more sense but its a pretty inconsistent range and with jamming it like that its not telling me actual contact.
I bore scoped prior to cleaning and post cleaning. The barrel cleaned up really well in the rifling, crown looks fine, chamber looks ok, but I have pretty nasty fire cracking right at the opening to the throat on the very edge. I don't see it protruding past the edge very far. Mind you I only have 400-500 rounds through this thing. Is this an indication that my loads are too hot? I've seen a lot of data for 26" Dashers with velocities between 2900-3000fps, I thought that was a normal expected range for Dasher, is that not the case?
Bore scope video link: Login to view embedded media
Now I'm completely comfortable with the notion that I got the land jump measurement wrong and that I was likely closer to the lands than I originally thought. That being said, even if I was .002" off I didnt experience issues until my trip. Could it be possible that the fire cracking I'm seeing is actually closing the ID of the throat due to material expansion? Why do I feel like the crazy hair guy from Ancient Aliens?
