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ballistics04

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    Carthage, NY
  1. My last competition was around 2010, and it was just one competition in NJ. Prior to that, my previous competition was at Camp Perry in 2005. I retired from the Army in the spring of 2013, and cuomo shoved his unSAFE act down our throats. Due to the lack of High Power Rifle competitions anywhere near Fort Drum, and changing careers, I gave up competitive shooting. I'm wondering if anyone is still shooting NRA/CMP matches in NY. If so, are you using a match grade "featureless" AR15? It seems like most everyone has added a scope to their service rifles, as per the "new to me" Service Rifle rules. Where are NRA/CMP matches being held in NY state now? Just curious. At my age (53), I doubt I could ever be good enough to add to my 18 "leg" points to get my Distinguished Rifle badge. I'd have to start over again, with new equipment, a new rifle, LOTS of practice and driving 3+ hours one way to find a 600 yard range (Colonie, NY). The thought of it doesn't sound very reasonable, and it sounds very expensive to dive back into. And now, with reloading components being unavailable or ridiculously expensive, now is not the time to pursue such an endeavor. This is my first post in about 10 years. I've checked in here every once in a great while, without bothering to log in or post anything. But I always enjoyed this forum. I'm trying to get a feel for the shooting community in NY State, and see what's happening with the High Power Rifle shooters in NY.
  2. Jefferson County, NY.
  3. I tested my non-crimped 75gr Match bullets in my AR-15 to see if they "jump" out of the case neck when the bolt slams closed. I pre-measured the cartridge with a stoney point OAL guage before my testing. I tried it by allowing the bolt to feed the loaded cartridge from the magazine first, and the bullet didn't budge. I then seated the bullet all the way into the chamber (using my fingertip), then let the bolt slam against the cartridge (to simulate single fire loading in a match), and the bullet didn't budge. I fired several 5-shot groups with crimped and non-crimped cartridges and there was no accuracy difference between crimped and non-crimped. So, the conclusion that I came to was that crimping the bullets was an added step in my loading process with NO added benefit. The bullet doesn't slide out of the case neck when the bolt slams the round into the chamber. I don't even crimp my match bullets that have the cannelure because when I am loading my match rounds I use a single stage pres, and I want to maximize my loading output by not adding any unnecessary loading steps like crimping. With that said, I DO put a light crimp on hunting bullets that have a cannelure. I use the Lee factory crimp with a half turn on the crimp die. Hope this helps. Todd
  4. The longer and heavier bullet they are referring to is the 62gr M-855 bullet, which is heavier and longer than the old 55gr bullet that the M16A1 used with the 1:12 twist rate. Why they would need a longer throat for a magazine length bullet is beyond me. I load 77gr bullets to magazine length that will fit in at AR-15 chamber, and the mini-14 chamber (.223), and those 77gr bullets are a lot longer than those 62gr bullets. The 77gr bullets are the heaviest bullets that we seat to 2.26". The 80gr bullets, and even the 75gr Amax, are seated out to 2.39" or longer because of the higher pressures you mentioned.
  5. The military loads their ammo real hot compared to civilian ammo makers, which is why (I believe) they crimp the primers in place. I've seen that same advertisement about the Federal 80gr ammo from ammoman.com. I have shot 5.56 rounds through my Mini-14 without any problems, but I have never shot 5.56 through a bolt action .223 varmint rifle with the 1:12 or slower twist rates. Those varmint rifles might have shorter chambers, but I have absolutely no knowledge on them at all. The Mini-14 rifle is avertised as a .223 caliber rifle, but that doesn't mean it has the same chamber and throat dimensions as a bolt gun.
  6. I never could figure out why they make the throat longer on the 5.56 NATO chambers, because they only shoot magazine-length ammo, which means they don't need the jump that we need when loading longer 80gr bullets. Hmmm, just another gunsmithing mystery...
  7. No, it won't be less accurate. From what I've read in numerous articles, .223 vs 5.56 has nothing to do with the barrel. It has a little to do with chamber dimensions... very little! In my experience with the Ruger Mini-14 since 1980, and with the M16/M4/AR15 rifles since 1986, I have seen NO difference in the way any of these rifles chamber, feed, shoot, or extract a mixture of 5.56 military loads and .223 civilian ammo. I'm sure you will find many of the same articles if you google .223 vs 5.56 or something to that effect. Todd
  8. I love my shoting chrony Alpha Master (the red one), with the additional remote read-out on the 20 foot cord. Todd
  9. Just like it's been said already, length depends on how deep your chamber is cut. My Rock River Arms chamber is what they call a "Wylde" chamber, which gives me another .020" after I seat my 80gr Amax out to 2.42" to the tip of the bullet. So seating it to 2.52 doesn't seem too extremely long. You're going to get some light crunching on the powder, but I doubt you'll get any high pressure signs. I never have, even in 100 degree temperatures. Todd
  10. I've had great success with the 75gr BTHP, using 23.5gr H4895 and 24gr of Re-15 (not at the same time, LOL). Nothing to report on the 69's or 68's. Todd
  11. I loaded mine to 2.42" and they grouped 1.5" at 200 yards. That was a nice 5 shot group with 24.5gr Re-15. I have a 1:8 twist 20" barrel AR-15. Velocity was 2650 fps with no signs of high pressure. It looked like I had room for another grain of powder, which might bump the velocity up to 2750, but I don't know how it would group. I work up and down in half grain increments to get good groups. I haven't tried 25gr or 25.5gr yet. That will be in August or later this year. If GLShooter's technique doesn't work for you, I suggest a Stoney Point OAL gauge. I use it to seat all of my single load rounds about .020 off the rifling.
  12. Yep, we're talking about Camp Perry, Ohio. I'll be shooting the Presidents 100 match and the LEG match (NTI) the next day. I don't plan on staying for the NTIT (team) match or any of the other CMP matches. Some of my best 600 yard loads have been; 75gr Amax, 24.4gr Varget, LC brass, Rem 7.5 primer, velocity was 2823 FPS (average) on my Chrony 75gr Amax, 24.5gr H4895, LC, Rem 7.5, 2875 FPS 80gr Berger VLD, 24.5gr Re-15, LC, Rem 7.5, 2817 FPS 80gr Berger VLD, 23.9gr H4895, LC, Rem 7.5, 2796 FPS 80gr Berger VLD, 24.5gr Varget, LC, Rem 7.5, 2787 FPS I shot the 80gr Berger load with Re-15 at Camp Perry in 2005 at 600 yards. My first shot in the P-100 match was an X. I finished that string with a 97-3x... my best 600 yard score ever. I'm sure the three 9's that I shot were my fault, and not the ammo. That was only my second match in over a year, so it's not like I had any practice before going to Perry that year. Now it's been 5 years since my last match, so I have a lot of catching up to do to get my skills back to where I want them. I got better velocities and tighter groups with H4895 than I did with Varget. That goes for the 68gr, 69gr, 75gr, 77gr and 80gr bullets that I have load tested. I've tested Noslers, Bergers, Sierras and Hornadys when I first started shooting highpower. I have stuck with the 75gr BTHP Hornady for 200 and 300 and the 75gr Amax for 600 yards. I love the Berger 80gr VLD but they are out of my price range. I have 900 of those bullets left from 2005. When those are gone I will go to the 80gr Amax or stick with 75gr Amax for 600 yards. Todd
  13. With help from the AMU guys at the 2004 and 2005 All Army, I got pretty good at reading the mirage. That doesn't mean that I always made the right adjustment. Since my last match was in 2005 I will be back down on my scores. 11 calls for a mark should have gotten the pit officer's attention in a hurry. I would have had a drill sergeant flashback when I got face to face with my target puller. That can really throw off your concentration, and shooting is mostly mental anyway. I'm at Fort Drum where the nearest 600 yard range is in Albany. It's a great range, and they have some great shooters up there. But I have to leave my house at 3:30am to be there for a match. I want to shoot there May 20th and 21st for an 80 shot match and LEG match. I need some 600 yard practice real BAD! Todd
  14. I used my last bit of Varget to load some .308 stuff for my neighbor (geez, that was back in 2006). My best loads were with H4895, but I used the last of that back in 2006 as well. That's when I got this steal of a deal on the TAC powder. I haven't reloaded anything since 2006 because of deployments and the Army lifestyle. I've got 10 pounds of TAC to use up before I go back to H4895 (unless I find a great load with TAC, which I'm sure is possoble). I don't have enough Reloader 15 to get me through a year of shooting matches, but I might use it for my 600 yard loads and Berger 80gr VLDs. I'll figure something out with my 75gr Hornady's and TAC before the end of this month. I just hate swithing powder types during a match, using TAC at 200 and 300, then Re-15 for 600 yards. Decisions, decisions... Todd
  15. You don't have to be a good shooter to go to Perry. It's just a great experience to share the firing line with that many gun lovers like us. Plus, you'll see the AMU guys doing what they do best.
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