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nbkky71

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  1. I run AR-COMP for all my NRA/CMP service rifle loads, but I'm using a Nosler 77gr. While, not a sub-MOA load, it shoots well enough for service rifle. Netted me a 199-13X rapid fire sitting @ 200 yards during practice a couple weeks ago. Nosler 77gr CC 22.4gr ARCOMP CCI450 primer USGI brass 2.26" OAL
  2. nbkky71

    Ar-Comp

    I've been using it for years shooting NRA/CMP highpower rifle. Switched over from Varget and haven't looked back. It is a bit dirty, but gives plenty of velocity. Shot out of a 1-7.7 twist 20" A2 model Sierra 77gr 22.4gr ARCOMP CCI450 primer LC brass 2.26" OAL ~ 2720 fps
  3. I've been shooting AR-COMP for several years now, after switching from Varget. I'm shooting NRA/CMP service rifle using a 20" A2 model, 1-7.7 twist. I've found that I can get more velocity using less powder over Varget. The powder is a bit dirtier though. Sierra 77gr MK/22.4gr AR-COMP/CCI450 primer/LC brass/2.26" OAL Berger 82gr/23.0gr AR-COMP/CCI450 primer/LC brass/2.5" OAL (single load only)
  4. I'm primarily shooting NRA/CMP service rifle with irons. AR-COMP is a good powder and I switched over from Varget years ago. I'm running a Sierra 77gr, 22.4gr AR-COMP, CCI450 primer, LC brass. Velocity is ~2720 fps. Great powder, but it's pretty dirty. I was having to use 24-24.5gr Varget to get similar velocities. For 600yards I normally shoot Berger 82gr bullets loaded to 2.5" OAL over 23gr AR-COMP, CCI450 primer, LC brass. This requires single loading, but they shoot really well. Best score I ever shot at 600 yards was 197-12X with irons using this load. (X-ring on an NRA MR target is 6" wide)
  5. I'm running AR-COMP through my 550 powder measure to load .223 and have had positive results. Kernel size is similar to Varget. Most charges are within .1 - .2gr, but there is an occasional .3 that sneaks in there. I'm loading for CMP/NRA service rifle, so as long as my ammo will hold 2MOA, I'm OK. Polishing up the internals on the powder measure helps. As mentioned, a consistent stroke on the handle is key. I add a 'tap' on the measure at the top and bottom of each stroke to help prevent bridging and help charges settle. Probably the most helpful thing that I've done is remove the sizing step to keep a nice smooth press stroke. All my .223 brass is sized on a single stage first, then run through the Dillon where it is primed, powder dropped and bullet seated.
  6. My ammo was fired out of an M1A and it's been a while since I've shot that rifle. I seem to recall velocity being in the neighborhood of 2550 fps. Nowadays I mainly used 4895 instead of Varget since I have tons of it and Varget is hard to get in my area.
  7. Hodgdon's reloading guide says shows a starting load of 42.0gr and a max of 45.0gr for a 175gr bullet using Varget. I've used 41.3gr of Varget under a Sierra 168gr MK with good results. LC brass and a WLR primer.
  8. 22.1gr through a 20" AR15 is a pretty tame load but they could have arrived at that number using SAAMI pressure specs, which are lower than USGI specs. I've called Alliant before with the same question and they never came out and said that was the actual MAX charge, but they didn't say that it wasn't either... Use 22.1 as a reference point and work up to what's safe and accurate in your rifle. For me, I started at 22.1 and went up from there. Most competitors that I know shooting AR-COMP and 77gr bullets use charges in the 22.3-22.9 range. Here's the loads that I shoot in my AR: Sierra 77gr MK 22.4gr AR-COMP CCI450 primer LC brass 2.25" OAL 2720 fps avg. Berger 82gr MT (600yds - single loaded) 23.1gr AR-COMP CCI450 primer LC brass .020" off the lands 2724 fps avg
  9. I had an issue with a binding powder bar once and my problem was that the bell crank screw had worked loose, causing the bell crank cube to ride out of the track in the powder bar.
  10. For rifles I usually go in increments of .3 grains.
  11. FYI... It's Alliant AR-COMP I shoot a lot of NRA/CMP highpower and have completely switched from Varget to AR-COMP. In my experience, I am obtaining velocities using 1-2 less grains of AR-COMP than I do with Varget. It is a bit dirty, but I can live with that. 200/300 yard load Sierra 77gr MK 22.4gr AR-COMP CCI450 primer LC brass 2.25" OAL 600 yard load Berger 82gr MT 23.3gr AR-COMP CCI450 primer LC brass 2.50" OAL The 23.3gr load is a bit on the warm side and I need to run a carrier weight with that. It shoots *very* well though. I have read on other forums that some folks have reported about cycling issues or the bolt failing to lock back in the AR15. I witnessed this shooting with a buddy last month while he was working up some loads for his service rifle. Turned out that the primer made the difference, with my loads running a SRM primer instead of him using a SR primer. Fair warning...
  12. When I shot an NRA/CMP highpower with an M1A, I used to use the following .308WIN load for 200 yards Speer 125gr TNT 41gr IMR4895 WLR primer USGI brass Very accurate load and light on recoil.
  13. Sierra 125gr MK or Speer 125gr TNT 41gr IMR4895 WLR primer USGI case The OAL of the TNT round will be a bit shorter than the MK. I use(d) this load shooting NRA highpower as it's quite accurate and easy on recoil at the 200 yard line.
  14. The 77gr will shoot to 600 yards easily, assuming you have the correct twist rate in your barrel (1-7 or 1-8 twist should work fine). There are many good powders out there, so take your pick. Load the rounds to mag length (2.25-2.26") and you'll be fine. In my NRA/CMP service rifle (20" A2 model AR15) I shoot a Sierra 77gr MK over 24.0gr varget, CCI SR primer using USGI brass. I've never shot the Nosler 77's, but many folks say the shoot the very close to Sierra 77's. As always... start low and work up.
  15. Just got my 550 press back from Dillon too. After 15 years, it was time for a serious overhaul. The press was sent in along with my check for $67.95 and a two weeks later I had what looked like a new press. The receiept indicated that nearly $200 worth of parts were replaced. They did keep my original Dillon shipping box though and sent me a new one.
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