Posted by: Dan C ®
02/16/2002, 00:51:21
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It happens to be my favorite powder in my Mach IV with 25's. I use around 19.0-19.2 grains for 3800 fps or so. Dan C
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Posted by: Cook
02/16/2002, 16:45:09
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I picked up a pound to try in my 223 AI, but when I saw your post I started thinking about how it would work in a Vartarg. How much case capacity is left with 19.2 grains in your Mach IV case? Wonder what its burning rate is compared to 4198?
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Posted by: Dan C ®
02/16/2002, 17:51:24
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Already tried it, too slow. 19.2 gr. is nearly a case full in the Mach IV. In the 20 VT, you just can't get enough in there to get up to speed. Benchmark is pretty close to N-133, or a bit slower. I liked N-130 in my VarTarg, much better consistency than H4198. Dan C
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Posted by: Cook
02/18/2002, 23:00:02
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Hey Dan, I'm getting meodicre accruacy with fire form loads in my Vartarg using 4198. Do you think N130 is worth a try? Right now I am getting about 3,500 - 3,550 fps fireforming and groups are ranging in the .6's to .8's. Maybe I shouldn't complain. Do you know what kind of velocity you're getting with FF and full loads?
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Posted by: Dan C ®
02/20/2002, 11:49:47
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Cook, my Tannel-built rifle was shooting in the .3's while fireforming, using RL-7 at about 3600 fps. After that initial batch, I did the rest of my fireforming with Blue Dot. I do know tht my rifle much preferred the Hornady bullets seated well into the lands, as much as .020". I liked N-130 better than H-4198 because it didn't seem to be so erratic. I was shooting for 3800 fps, and at that level I would occasionally blow a primer pocket with H-4198. I don't mean loosen, I mean BLOW!! N-130 was more predictable, and never ruined a case out of the blue. RL-7 was good too....... Dan C
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