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  1. H

    New 6mm Advanced Rifle Cartridge

    @LRRPF52: Very interesting findings with the 6.5 Grendel and Quickload pressure. Understanding that when communicating in a forum such as this that you never know who you might be talking to, a 10 KPSI difference strikes me as unusually surprising. That sounds like it could be as much as 20%...
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    New 6mm Advanced Rifle Cartridge

    I am very familiar with fonts and old eyes. Thank the lord for multi-focal contacts! Some of those primers do look pierced. That could just be lighting. Your MV does bring that charge more in line with the Quickload data. Happy Friday all! Henryrifle
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    New 6mm Advanced Rifle Cartridge

    Yeah, I didn't intent to imply that you were operating in the danger zone. I plugged in those numbers to see if it was something I should put on the list of powders to try. Quickload can output some crazy data if it is not set up properly. When I get a chance I'll take another look at it...
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    New 6mm Advanced Rifle Cartridge

    I get the same light swipes from factory ammo as well--both the Black 105s and the Match 108s. The factory rounds have a MV out of my barrel of 2700 and 2720 respectively. My hand loads are 30 to 50 FPS slower and I don't usually get swipes. Without doing any tuning to the program (case...
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    New 6mm Advanced Rifle Cartridge

    @Dino11: No pressure signs? Is this in a gas gun? That is impressive speed! Henryrifle
  6. H

    New 6mm Advanced Rifle Cartridge

    @verdugo60: I've been using 29.0 grains of CFE 223 in Hornady brass with the Hornady 108 ELD-Match bullet and any of the following CCI small rifle primers: BR4, 450 and 400. My OAL has been very close to max magazine length at 2.255". My powder charge is below the maximum value of 29.1 grains...
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    New 6mm Advanced Rifle Cartridge

    I should try the Berger's but was trying to find a bullet that matched the following prioritized list: Inexpensive Accurate Available This is an attempt to save the better bullets until components are more readily available. Have had reasonable to good success with the Hornady 108 ELD-M but...
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    New 6mm Advanced Rifle Cartridge

    Update on 107 Sierra MatchKing testing: In the first test with the 107s, I used the same charge weight where I found success with the 108 ELD-Ms, 29 grains of CFE 223. All of my testing with the 108s had been in the 66 to 75 degree fahrenheit temperature range and the speed was a consistent...
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    New MPA BA Rifle (Barrel breakin or NOT)

    I'll be honest and say that I don't really know what I believe. Good barrels take some number or shots to achieve a stable muzzle velocity. By stable, I mean that the velocity usually increases through the first 50 to 150 shots. I have fastidiously performed the age-old ritual of shoot and...
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    Build or Buy Built

    I thought one of my boys was going to UGA and scoped out Athens for shops and places to shoot. I found several good stores with knowledgeable staffs/owners. You are in a good part of the state for shooting sports. I have found long range shooting to be a sport that depends on a set of skills...
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    Build or Buy Built

    @wera44: The frame-up of your question resonates with me as I both live in Georgia and have an auto racing background. I completely agree with you that purchasing a ready to go racecar is FAR less expensive than building your own, however, there are many facets to any sport and if you are a...
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    New 6mm Advanced Rifle Cartridge

    I always load CBTO. I will say that the SMKs are remarkably consistent. After loading them all, I checked all of the OALs and all were the exact same except one. Henryrifle
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    New 6mm Advanced Rifle Cartridge

    Tested with some 107 Sierra MatchKings today. After deciding to go to the range late, I loaded 20 rounds of the 107 SMKs over what is working for me with the 108 ELD-Match bullets, 29 grains of CFE 223. The temperature was in the 62 to 66 degree range today where I have done almost all of the...
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    New 6mm Advanced Rifle Cartridge

    I have only used the E-Lander magazines because I had a few from the 6.5 Grendel project. They have worked great so far in spite of the suppresser making them extra dirty on the inside requiring some clean up from time to time. Regarding the adjustable gas block, I have to be honest and say...
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    308 Tack Driver Gas Gun

    @LRRPF52: I was tempted to say exactly what you said, specifically about the 6mm ARC, but decided not to wonder too far off the topic. However, I couldn't agree with you more and really think that your advice is spot on. Unless you just really want a SR25, any of the options you mention will...
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    New 6mm Advanced Rifle Cartridge

    @eugevita: I think you are going to enjoy your new rifle. Would be interested to know how you plan to use it. As I relate some of my experiences, my goals were to put together a relatively light weight platform that I could use for deer hunting AND one also capable of hitting steel at 1000...
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    308 Tack Driver Gas Gun

    I have direct expreicne with 3 of the rifles mentioned in previous posts: GAP 10: @MitchK mentions the GAP 10. That is the rifle that actually made me pick up an AR-10 in .308. A shooting buddy of mine bought one in late 2015. It shot sub MOA out to 600 very consistently and easy shot 1/2...
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    New 6mm Advanced Rifle Cartridge

    Just a post for fun… I spent some time at the 1000 yard range yesterday and while I wasn’t planning on shooting the 6mm ARC, the rifle I wanted to shoot developed a trigger problem after several shots. I pulled the 6mm ARC out of the truck with the idea [hope] of getting a cold barrel fist...
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    New 6mm Advanced Rifle Cartridge

    @Dino11: Thanks for your thoughts. I actually have a box of RDFs to try but searching around reveals that RDFs are not in stock at the top level internet resellers I normally frequent. I'll play with the ones I have and see what I can get them to do. Thanks again, Henryrifle
  20. H

    New 6mm Advanced Rifle Cartridge

    Curious if any of you have experimented with the 107 grain Sierra MatchKing for the 6mm ARC or one of the other similar cartridges? I ask because those bullets seem widely available, very reasonably priced and appear to have the seating depth insensitivity of a tangent or hybrid ogive. Henryrifle
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