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Post by GLSHOOTER on Dec 30, 2011 14:35:43 GMT -8
I have probably mentioned on the board that I was awaiting a new 6X45 barrel to mate up to my BHW left handed railed upper. While the wait seemed forever, which it was not, I can now say that thanks to the efforts of Carl, Andy and Kiz along with Ritch Johnson I now have a true Black Hole No Escape rifle. The machine work on all the parts is superb on both the railed upper and the barrel. I requested a 24" SSS 3R bull with the front turned to 0.750 for a little less muzzle weight. I'm pretty small and know I'll be doing some off hand stuff with it so this was a consideration. The heavy contour under the hand guard really makes it balance well. I also had the full under the guard and front fluting done with the B Square version. It came out clean and sanitary and with the blackening of the barrel it is a very subtle but usable feature. I had Ritch mount up a JB adjustable block as this one will be shooting everything from hot 55's up to the 100 grainers. I built the lower a few weeks ago and treated myself to one of those fabled Giselle High Speed Match Triggers. Pull weight total is around 1 1/2 pounds or so with the second stage right on about five ounces. It shot be perfect for the F-class matches and those pesky peeking out of the hole PD's at 300 plus yards. Just a peak at the brass I have prepared for it while waiting for the RW&B truck. All Winchester commercial done up with all the case prep trick I know. This is the KD lower that I had fun with. The light stealer incarnate. Kiz's work that says it all about this one. JP adjustable block to make life simpler at the bench. The subtle B Square fluting that really makes it different. I'll be posting as I go along and evaluate this one. The target scope comes out and it will be used for the initial work ups and matches and then I will pick a good variable for the game fields. Greg
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Deleted
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Post by Deleted on Dec 30, 2011 15:35:49 GMT -8
nice, very nice! you are going to beat me at testing the 24" barrel... 4 months still waiting... You see that set screw for hte jp brake? Go to the local ace store and take that screw and replace with a Stainless bolt of the same section but longer. Also get a small hard spring to fit and might need a small stainless washer. Then replace with that one. When you set it is easier to turn and will not walk. you can also put a small mark in the bolt head. This might change from one block to another but you can screw all the way in and then unwind 1.1/4 to 1.1/2 that is when mine starts to chug like clock work. What is that reamer and chanfer tool? It looks that it can be attached to a powered trim station, is that true? NICE RIG!! CONGRATS!! 6x45.. the little round that could... www.chuckhawks.com/6mm_military_cartridge.htm
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Post by GLSHOOTER on Dec 30, 2011 16:09:30 GMT -8
nice, very nice! you are going to beat me at testing the 24" barrel... 4 months still waiting... You see that set screw for hte jp brake? Go to the local ace store and take that screw and replace with a Stainless bolt of the same section but longer. Also get a small hard spring to fit and might need a small stainless washer. Then replace with that one. When you set it is easier to turn and will not walk. you can also put a small mark in the bolt head. This might change from one block to another but you can screw all the way in and then unwind 1.1/4 to 1.1/2 that is when mine starts to chug like clock work. What is that reamer and chanfer tool? It looks that it can be attached to a powered trim station, is that true? NICE RIG!! CONGRATS!! 6x45.. the little round that could... www.chuckhawks.com/6mm_military_cartridge.htmThanks for the tips. The reamer is K&M VLD unit. It is a hand tool but can be chucked up in the holder that I am using on the outside deburring tool in the pic. It is very sharp and does a very nice job of easing those bullets in. The pocket uniformer is a basic Sinclair unit in their holder. I also used a Hornady pocket reamer that they use on their power station rigs. I had a holder made up for my power screwdriver for it. Power tools make everything go so much faster. Greg Greg
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Post by GLSHOOTER on Jan 3, 2012 10:34:13 GMT -8
Took the new BHW 6X45 out yesterday late in the day for a break in period. Jumping up and down cleaning was not conducive to the process of group shooting nor was fighting the horrendous weather of 78 degrees, no clouds and a swirling 5 MPH gale force wind.
I used some old ammo that I had loaded for one of my other 6X45's that I have been shooting in IPSC matches. I shot three different bullets. The 70 grain Nosler BT, the 80 grain Remington PSP and the Hornady 87 grain HPBTM. Velocities were a consistent 125-150 FPS higher out of the 24" tube over my original 20" gun.
I shot some 80 grainers over a decent charge of RL15 and managed a 4 shot group of right on 0.495. I only had seven of those and the first three were used to get me on paper at 100 yards. Velocity was around 2950
The 70 grainers were running right at 3200 and they manged a pair of sub-MOA groups.
The 87's wre a bit of an issue vertically but I was hurrying them as I was loosing my light and was fighting the bench being too tall for my chair. A taller stool is in order!! They did about 1 1/4" but I will reshoot them as they are sub-MOA in my other two rifles. Velocity was 2825 and I was very happy with those.
All my loads came out of the old Hodgdon book. Pressures were a non-problem. Function was 100% once I opened up the JP block quite a bit. I did find the adjustment screw on the gas block is not very tight and once I settle on a setting I will use some RTV or Onezeros fix to make sure i don't have issues there. Once I got the block tuned it was ejecting at about 7-8 O'clock about five feet to y left. I actually draped a blanket over a chair to catch the brass and it was dropping them in to an area the size of a coffee can.
The Giselle trigger ran like the proverbial greased owl dodo. Easy adjustment in shooting the two stage and with that light second stage keeping the cross hairs steady was simple.
I did find the railed receiver a strange thing to shoot. Recoil seems to be smoothed out compared with a regular upper. The gun felt 'soft" in my shoulder and I swore it was short stroking I don't know how the rails work but it really is a noticeable change in the sensation on firing.
I'll be getting some GOOD bullets loaded up now that we got the bore ready for serious stuff, IMHO, and am excited to see what it will do with some of my good varmint bullets out of the magazine and some long boys shot off a sled.
My overall impression of this one is that BHW can hold it's own over outfits selling at three times the price.
Greg
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Win75
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Post by Win75 on Jan 3, 2012 11:27:33 GMT -8
Took the new BHW 6X45 out yesterday late in the day for a break in period. Jumping up and down cleaning was not conducive to the process of group shooting nor was fighting the horrendous weather of 78 degrees, no clouds and a swirling 5 MPH gale force wind. Greg Your weather is not as good as ours. A balmy 17 degrees with a wind of about 28 mph. Veryyy condusive to great groups. It sounds like you have a winner there. David
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Post by GLSHOOTER on Jan 3, 2012 13:28:09 GMT -8
Took the new BHW 6X45 out yesterday late in the day for a break in period. Jumping up and down cleaning was not conducive to the process of group shooting nor was fighting the horrendous weather of 78 degrees, no clouds and a swirling 5 MPH gale force wind. Greg Your weather is not as good as ours. A balmy 17 degrees with a wind of about 28 mph. Veryyy condusive to great groups. It sounds like you have a winner there. David Well I grew up in Minnesota and hibernated in the Winter. Had an indoor 50' rifle range though. It did help some. Now I hibernate, estivate, a bit in the summer. I've done a lot of load work up at 105+ temps. I am ready for the Sahara if they ever grow PD's over there. Greg
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Post by GLSHOOTER on Feb 6, 2012 14:52:17 GMT -8
I finally got a day with very light winds after waiting almost a month of Sundays..it really was Sunday!!..and got the BHW build heated up. This rifle was built to compete in mid-range, 600 yard, F-class matches and to shoot PD's in the summer. That being the purpose I decided to try some high BC bullets for my initial load work ups. I chose the 90 grain Sierra FMJ Gameking that, while a hunting bullet, has a good BC. I also, after consulting with a local F-class shooter, chose a box of the 105 grain Berger BT Match bullets with a stellar BC. Powders selected were H4895, AA 2015 and AA 2230. Accurate has data for mag length 90 grain Sierras so I thought I would try them first along with some seated about 0.003 of the lands. I used H4895 and AA2230 for these. I shot the long 90's first with H4895 and AA2230 as I figured they would be the lowest pressure of the test loads. I found after shooting the light H4895 I had groups in the 1.25 area initially but when I bumped the charge got 0.700 for my efforts. The long AA2230 loads were large at the light load but when stepped up to book MAX dropped to 1.3. Velocities on the H4895 was 2817 and the AA2230 clocked at 2782. These speeds were not listed in the book so they wee educational to say the least. Mag length 90 grain Sierras over H4895 resulted in a nice batch of holes as small as 0.697 to 3/4 MOA. I was learning how to use the new sled I got for XMAS so as I shot things got better and better as evidenced by this test. The AA2230 turned in groups that were slightly large again yet I was getting four out of five down below a MOA. It would appear that AA2230 is not the one for this rifle so far. Velocities with MAG LENGTH 90's ran 2796 for the H4895 and 2836 for the AA2230. All velocities were slightly over the book. I believe the poly rifling is the helper here. Primers were nicely rounded and I think I could bump it up a bit more and see what happens to the groupings. The 90 grain GK's will suffice for 600 yards at those speeds though there are three other bullets I want to test first. After this I loaded in some 105 Bergers with H4895 and some AA2015 with the hope they would stabilize. These suckers are LONG!!! and I figured maybe........ Of course all the long rounds were single loaded with a SLD so it was easy to deal with the big boys. Luckily I did not but a lottery ticket as I found after a stroll down the range to look at my newest rendered shotgun patterns that the 105's just won't cut it in this one. Those oval holes look kind of cool but not real useful in what I want to do. The next step down will be Berger 95's and 90's for a run at the little group prize. Overall I can say that the round is a piece of cake to load for. Performance for the powder/bullet weight is excellent and this one will be a great piece to bring to the line when I lay these old bones down. The accuracy is obviously there and with the good trigger it is easy to get. The railed upper has a tangibly different feel. The bolt runs so smoothly that you swear it has not run it's full stroke yet there is a piece of hot brass on the ground and one in the chamber at each trigger pull. The slick side is an oddity to me as all my others have a brass deflector. Of course all my others are right handed so maybe that has something to do with it. I'll be posting as I go with this and am excited to put it to the test. Please jump in with questions as they occur to you. Greg Here are a couple efforts:
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Deleted
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Post by Deleted on Feb 6, 2012 17:35:02 GMT -8
Very nice. Many thanks for the nice information here. I was going to tell you about the 95gr Bergers that are in my list next too.
I had some relative success with the 105gr AMAX but that is a 1:8 barrel and classic x6 button rifling but the long bearing surface + grain take a toll to a barely 2500fps close to max.. I cannot wait to test the 1:9 long 3x poly barrel but after testing several others uppers in 6x45 I do believe 1:9 is the sweet spot for this round and 24" might be the ticket for your purpose.
Of the mainstream hunting rounds I found both the 87gr v-max and 90 SGK FMJ to be good budget loads, easy to reload very forgiving and with excellent results on average.
I will post more information when I get the BH barrel and I get to test it. It will not be long now.
Cheers. E.
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quincy
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Post by quincy on Feb 7, 2012 17:05:39 GMT -8
That's pretty good shooting, I can't imagine how well you will do with sights on your rifle. ;D
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Post by GLSHOOTER on Feb 7, 2012 17:15:24 GMT -8
That's pretty good shooting, I can't imagine how well you will do with sights on your rifle. ;D Thanks. I don't use sights. I'm blind. They usually hang a little bell above the target and I shoot at the sound. I have VERY good hearing. Greg
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Deleted
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Post by Deleted on Feb 7, 2012 17:28:54 GMT -8
Very nice! I am blind too and deaf but luckily got some training from Dick Cheney's Shotgun instructor who also shoots rifle. I also heard Stevie Wonder holds the world record at the IDPA.
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Deleted
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Post by Deleted on Feb 7, 2012 20:40:45 GMT -8
I forgot to ask. What was your altitude and barometric pressure if you have them for these loads? Any additional data would be very helpful. Thanks again.
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Post by GLSHOOTER on Feb 8, 2012 16:08:34 GMT -8
I forgot to ask. What was your altitude and barometric pressure if you have them for these loads? Any additional data would be very helpful. Thanks again. Sunny, wind calm with gusting winds up to approx 15 MPH predominately from the East with some switching from the NE and SE. Range faces North and South, shooting North, with a berm directly to the East parallel to the shooting line at 20 feet. Temps ranged from 60 to 65 degrees. Elevation at the range is 1117 '. Barometric pressure was approx. 30.02 during the morning. Rounds fired between 1100 and 1530. Greg
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Deleted
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Post by Deleted on Feb 8, 2012 19:54:04 GMT -8
hey many thanks for the info!. It is nice to know you keep a good log of all your data. I will store it with great care. If you want your ballistics charts I can post them for you. I run my own math since I started shooting. I use the same model before the service and through the sniper school and still use it today. Thank you Bill Gates or whoever for Excel!!
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Post by GLSHOOTER on Feb 9, 2012 9:37:03 GMT -8
hey many thanks for the info!. It is nice to know you keep a good log of all your data. I will store it with great care. If you want your ballistics charts I can post them for you. I run my own math since I started shooting. I use the same model before the service and through the sniper school and still use it today. Thank you Bill Gates or whoever for Excel!! I run Pejsa Ballistics on my important stuff in my sniper schools I have taught. The JBM set up is also good for me as a quickie for my varmint shooting. Thanks for the offer but I'm good. Greg
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