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Post by greginpa on May 9, 2017 13:54:22 GMT -8
Hello I got in on the group buy for a Black Hole 22 Nosler barrel. I'm waiting patiently. In the meantime to get some brass and trigger time I put together an upper with one of the Midway USA 18" barrels. I'm having two issues and any help would be great.
1) The extractor is damaging the base of the case on extraction.
2) Absolutely poor feeding from ASC 6.8 mags.
Any ideas? Thanks in advance.
G.
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Post by GLSHOOTER on May 9, 2017 18:49:58 GMT -8
Hello I got in on the group buy for a Black Hole 22 Nosler barrel. I'm waiting patiently. In the meantime to get some brass and trigger time I put together an upper with one of the Midway USA 18" barrels. I'm having two issues and any help would be great. 1) The extractor is damaging the base of the case on extraction. 2) Absolutely poor feeding from ASC 6.8 mags. Any ideas? Thanks in advance. G. The Midway barrel I bought is terrible for accuracy. It is massively over-gassed. The chamber compared to new factory brass id 0.009 + or - so you get lots of head damage. All you can do is resize around 0.003 for the bump and turn the gas way down. On your extractor you might gently round the horns if they are very sharp. Also possibly if you are running the donut around the spring you might pull that. The brass is soft and when things get violent you will see lots if swipes and bent rims. Pressure is max at 55,000 and even then thanks to the 6.8 head thrust on a 223 head you will see the soft brass show signs of distress as you approach this. HODGDON just emailed me a huge file of loads that max at about 54,000. Just send them an email. I have equaled the speeds with a NATO pressured 556 and the 22X6.8 is flat running over the top of them. Extra usable pressure does that. My BHW 24" 22 Nosler upper will be here tomorrow. I'll shoot it side by side with my 556 and 22X6.8 in the same length. The report will be interesting on accuracy and speed. I have a fresh box of brass so I can document some of the head damage. I have been using ASC 6.5 Grendel magazines, I use them in all 6.8 and 6.5 variants, with 200 rounds down the tube with zero malfunctions in my STONER barrel. I split the shooting between two lowers. Keep us posted as things go along. How has your accuracy been? Greg |
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Post by jethrobodine on May 10, 2017 5:45:34 GMT -8
greginpa,
What size 6.8 ASC mags did you try? I've read that some users have problems with the 15 round mags but the 10 seem to function fine. You may need to tweak the feed lips a little. There are posts on 6.5 Grendal and 6.8 forums showing what others have done to fix feed problems.
I also bought the AR Stoner barrel from Midway and wish I had seen GLSHOOTER"s post on Predator Masters forum before I pulled the trigger. My results were exactly the same as his. I loaded three different powders up to the "Most Accurate" loads according to Nosler published load data and had major ejector swipes and rim damage when I got to the "Most Accurate" loads and the velocity was lower than 556 rounds through my BHW 18" barrel using a Magneto Speed chrono. I put a JP adjustable gas block on the barrel when I put the upper together and worked up to the setting that would function the action reliably. I emailed Nosler about the problems I was seeing with the brass and three weeks later got a response telling me to put an adjustable gas block on and /or put a heavier buffer on. This was the first time I have tried Nosler brass and I am not impressed with the brass or their customer service. I know I would have gotten a faster response if I had called but three weeks for a email response seams a little long. I really hated to send the barrel, brass and reloading dies back to Midway for a refund because the barrel was pretty accurate. If Lapua made 22 Nosler brass I would have kept it because I think it was a great idea, it just didn't work out for me.
GLSHOOTER, I want to thank you for all of your advice on various forums. You tell it like it is and share your knowledge with those less experienced like me. After returning the 22 Nosler barrel I bought a 20" BHW 264LBC 1-9, rifle gas barrel and am very pleased. In my opinion BHW makes some of the most accurate barrels out there.
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Post by greginpa on May 11, 2017 10:06:33 GMT -8
I went back to the range after I tore everything down. The rifle will still not feed from the 5 rnd ASC 6.8 mags. The case rim is still getting damaged when I can shoot it. In comparison I had an Odinworks 20" incher with an adjustable gas block show up the other day which I put together in an Aero Precison upper and lower, light weight bcg,rifle length buffer, CMC trigger. This one will feed reliably but even with an adjustable gas block it is still damaging the rims on extraction. Five shot groups with 77gr Nosler match is just a hair under an inch@100.
I'm gonna look at the extractor and smooth out any roughness and pull the o ring if there is one. I'll update next week, the weather is turning to crap again here in PA.
G.
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Post by GLSHOOTER on May 11, 2017 11:16:25 GMT -8
I just shot three rounds for case data through my new BHW barrel. Gas turned WAY DOWN and it didn't hurt the brass too bad with a decent charge of BM and a 50 grainer. It is already showing ejector marks, Just getting ready to swipe.. I'll shoot it next week as my plate is already full for tomorrow with my 20 Ruger and my 20 LBC and an evaluation of a new comp on my 3Gun 223.
Greg
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Post by greginpa on May 11, 2017 12:02:05 GMT -8
I just shot three rounds for case data through my new BHW barrel. Gas turned WAY DOWN and it didn't hurt the brass too bad with a decent charge of BM and a 50 grainer. It is already showing ejector marks, Just getting ready to swipe.. I'll shoot it next week as my plate is already full for tomorrow with my 20 Ruger and my 20 LBC and an evaluation of a new comp on my 3Gun 223. Greg Thanx. I just removed the o ring from the extractor. I'm going to shoot it like that and shut down the gas block some more. I'd really like to get to a point where it's not tearing up the brass. I just pulled the gas block from the Midway barrel btw and the gas port is huge. G. |
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Post by GLSHOOTER on May 11, 2017 12:27:03 GMT -8
I just shot three rounds for case data through my new BHW barrel. Gas turned WAY DOWN and it didn't hurt the brass too bad with a decent charge of BM and a 50 grainer. It is already showing ejector marks, Just getting ready to swipe.. I'll shoot it next week as my plate is already full for tomorrow with my 20 Ruger and my 20 LBC and an evaluation of a new comp on my 3Gun 223. Greg Thanx. I just removed the o ring from the extractor. I'm going to shoot it like that and shut down the gas block some more. I'd really like to get to a point where it's not tearing up the brass. I just pulled the gas block from the Midway barrel btw and the gas port is huge. G. It's going to be a fine line on brass. This is one that is going to hold things back as there doesn't appear to be any wiggle room at the top. Ritch told me mine was 0.086 IIRC. That's about standard for complete reliability but that's why we run the adjustables. Greg |
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Post by greginpa on Jun 1, 2017 17:16:01 GMT -8
Just to update this a little, I put an adjustable gas block on the AR Stoner barrel and a 5oz. buffer in it. I shot the 77gr Nosler load and there is very little wiggle room with the pressure. Accuracy was pretty good with 5 shot groups running just under an inch at a hundred. With the adjustable gas block it is practically shut down to where the rifle just functions to avoid destroying the rim of the case. A very fine line. It will be interesting to see what the Blackhole barrel does when I get it. IMHO I do not think the 22 Nosler is plug and play like Nosler says. If you don't care about your brass maybe...
G.
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Post by GLSHOOTER on Jun 2, 2017 6:03:32 GMT -8
Just to update this a little, I put an adjustable gas block on the AR Stoner barrel and a 5oz. buffer in it. I shot the 77gr Nosler load and there is very little wiggle room with the pressure. Accuracy was pretty good with 5 shot groups running just under an inch at a hundred. With the adjustable gas block it is practically shut down to where the rifle just functions to avoid destroying the rim of the case. A very fine line. It will be interesting to see what the Blackhole barrel does when I get it. IMHO I do not think the 22 Nosler is plug and play like Nosler says. If you don't care about your brass maybe... G. You have made the perfect deduction on the cartridge as presented by Nosler. Greg |
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Post by greginpa on Jun 6, 2017 17:11:08 GMT -8
Got tracking info for my Blackhole 22 Nosler today, can't wait to shoot it when it gets here.
G.
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Post by GLSHOOTER on Jun 6, 2017 17:18:09 GMT -8
Got tracking info for my Blackhole 22 Nosler today, can't wait to shoot it when it gets here. G. COME ON FEDEX!!!! Greg |
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