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Posted: 2/25/2008 1:48:12 PM EDT
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This is one of my average targets. I am all loaded up again with different loads to try to get the groups smaller and more consistent. The weather is holding me back. Anyway, the load below is 39.0 of IMR 4064, 120 gn. Sierra Matchking moly, and seated out as far as the magazine will allow. It is still about .080 from the rifleing. Still waiting on a Giesselle trigger which should help alot shooting off the bench. The red number in the lower right corner is the average for these five groups at 200 yards. The scope is a 36X Sightron benchrest. http://members.cox.net/mad5757/DPMS/3.jpg http://members.cox.net/mad5757/DPMS/rifle1.jpg |
| nice shooting!! Thats whats nice about hand loading is to try to tweak group smaller!!! I have the DPMS 260 with 18 inch tube with break.i have a bunch of test rounds ready to roll to test. But this Wis weather hasnt been nice lately!!! With the 7.5 twist i want to see what the Sierra 140gr and 142gr matchkings do at 200 and 300 yards!! wishooter |
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I've tried the 140 Matchkings and they shot terrible. The 107 Matchkings weren't much better. Why? The bullet has to be seated way into the brass to fit in the magazine. The 120 Matchkings are shorter than the 140's and 107's. The only way I can see doing any good groups with the 140's is to get a single shot adapter and get the bullet out of the case and touching the lands. I have a Bob Sled coming in Thursday so I'm going to be making up some long rounds tomorrow. Kinda sad that this defeats the semi-auto rifle. The only other option I can think of to shoot the long bullets is to have a custom reamer made to shorten the throat and you might as well put a Douglas or Krieger barrel on it while your at it. The barrel and smithing will cost about $700.00 and the reamer another $150.00 to $200.00 or so. |
good shooting. keep an eye on the bolt catch with the bobsled. check the screw after every session, and check the bolt catch for cracks as well. i broke one about 500rds, mostly using the bobsled. was with 168-190gr .308 bullets though. i tried changing the seating depth with the matchkings, not enough improvement to not load mag length. i did find with my 24" 1/10" .308, that it liked certain length bullets. 180gr shot best, 175gr close behind, 190gr decent, and 168gr not well. that is at 200 and 300yds, 5 shot groups. cheers. |
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Yeah, 4350 is some pretty good stuff. But I have smaller groups with N-150 and 120 Matchkings. H335 is pretty good too. I shoot only at 200 yards I guess because it's easier to see your real rifles ability to shoot small groups. I used to shoot benchrest and I always hated shooting at 200 yards because the groups are huge compared to 100 yards. Try 200 yards. I predict you will be fairly lucky to have two holes touching. Now that I have a 200 yd. load I'm going to start shooting 300 yards and see if I can hold the shots in an NRA SR-21 target. Ain't this fun? Dale |
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It seems that alot of shooters here like and use 4350. I have tried it with three different Matchkings with not much success. It prints pretty good at 100 yards but looks terrible at 200 yards. I'd just take a load from a loading book and start in the middle of the grains of powder listed. I have found that if you start with their minimum load it's often not enough to fully cycle the bolt. I have found a better load since I first made this post. It's Vhit. N-150 and a 120 Matchking. Thanks and good luck, Dale McClure |
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