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Post by elkman1310 on Jul 29, 2018 13:28:25 GMT -5
I built a 6mm Dasher the other year when Sierra brought out the new 110gr bullet because of it's high BC. But after 200 shots I gave up because I couldn't make them shoot at 1K. I parked the gun for a while and then I installed a tuner and muzzle brake on the barrel. The gun shot 105gr VLD Berger's really well at 1K by using the tuner. Since I had some 110gr bullets left from the other year I thought I would give them another try only because the barrel now has a tuner on it. Sometimes you can tune the vertical out of a load using the tuner that you can't do other wise with changing seating and powder charges.
So far I tested this theory at 365 yards. With a starting point on the tuner I shot the 110gr bullets at 365 yards same BS all vertical so I turned the tuner ahead I/4 turn and the group went round but still not what I was looking for so I turned the tuner ahead another 1/4 turn and magic happened no vertical 8 shots under one inch at 365 yards. There was some wind and we only have one plastic streamer at 200 yards which meant nothing. I was only testing for vertical stringing not wind induces horizontal . Next test will be at 1k when I buy more 110gr bullets.
The 6mm Dasher is the dominating cartridge at our 1,000 yard range and the 300WSM Today I shot my other 6mm Dasher in Heavy gun or unlimited weight class and won my relay for score with a 96 out of 100 and came in second in the shoot off with a 95 for score Not to shabby for a little 6mm Dasher
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Post by 68hunter on Jul 30, 2018 12:39:30 GMT -5
Nice shooting with the 6 Dasher Carl.
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Post by bigc on Aug 14, 2018 21:34:23 GMT -5
Thats pretty cool. I've never even heard of a barrel tuner other than the slip on sims tuner.
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Post by aldeerhunter on Aug 22, 2018 21:59:44 GMT -5
Hope it holds up for you. What type of tuner?
Have the guys in your club tries the 6brAI? Seems like it is the newest now hyped kid on the block.
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Post by elkman1310 on Aug 23, 2018 16:22:03 GMT -5
Well I did test this same load with 110gr SMK and it went right back to vertical stringing so I would say that this bullet is just to touchy for me to keep tuned.
The 6mm BRA has not had really any success on our range several guys including my good friend he had a Krieger barrel chambered by Alex Wheeler from Montana after 200 rounds we pulled it off just couldn't get the thing to shoot. The slightest change in powder or temp really had a negative effect on it he went back to the Dasher. You can get the same velocity as the Dasher but you working at over 65,000 PSI and even more so I think most people are going to keep running the Dasher at our club.
I have been using 6mm Norma Dasher brass and shorten it and neck turner for my .266nk and it has been shooting smaller groups with the Norma Brass then with Laupa and no fire forming to make the Dasher. The Norma brass is a little heavier and has slightly less volume so you need to cut your powder charge back a little to get the same velocity. Bullets.Com went out of business they were the only importer of this brass Norma tells me it will be sold in the USA their setting up distributors to handle it they told me it should be avaible by September.
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Post by aldeerhunter on Aug 25, 2018 20:27:12 GMT -5
After Wheeler shot tke record using the BRA, it was destined to be the newest fad. I guess time will tell if it offers anything that the Dasher does not.
I just bought a Dasher and look forward to playing with it.
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Post by elkman1310 on Aug 26, 2018 12:30:01 GMT -5
You need to be careful where you start with your load development depending on what bore you have a .236 bore or .237, Depending on what part of the country you live in Rl 15 seems to be the winning combo. Here in Pa. Varget seems to be the best with 450 primers.
Your starting load could be as low as 31.0grs all the way up to 34.0 grs of powder. What you should look for is a load that gives you around 2950 to 2980 fps. with a 105gr to 108 gr bullet. You will find the best accuracy node in the velocity range.
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Post by aldeerhunter on Aug 26, 2018 21:46:53 GMT -5
You need to be careful where you start with your load development depending on what bore you have a .236 bore or .237, Depending on what part of the country you live in Rl 15 seems to be the winning combo. Here in Pa. Varget seems to be the best with 450 primers. Your starting load could be as low as 31.0grs all the way up to 34.0 grs of powder. What you should look for is a load that gives you around 2950 to 2980 fps. with a 105gr to 108 gr bullet. You will find the best accuracy node in the velocity range. Thanks. Right now I am waiting on the scope to be returned from Nightforce. It was damaged during shipping. The neck is .269. The guy I purchased from was shooting 105gr VLD Hunting bullets, 32.64gr 4895.
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Post by aldeerhunter on Aug 26, 2018 23:40:14 GMT -5
I will pick up some RL 15 on my next powder run.
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Post by elkman1310 on Aug 27, 2018 7:53:12 GMT -5
We have tried H4895 and RL 15 and have always gone back to Varget. RL 15 is supposed to be more consistent from lot to lot than Varget H4895 was temp sensitive around here when it got hot. I have been using 33.2grs of Varget and a 450 primer with the 107SMK. When I switched from CCI BR4 to 450 primers my guns went from 6" guns down to several groups under 4" for 10 shots in practice. Just one small change like a primer can have a big effect at 1,000 yards. At 100 yards it hard to see anything they all seem to shoot tiny bugholes at 100 yards but when you get out past 300 yards things get noticeable on paper.
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Post by aldeerhunter on Aug 28, 2018 15:18:46 GMT -5
I have about 7 pounds of Varget left and plenty of 450 primers. Scope came back from Nightforce yesterday so maybe I will get to load and shoot the new gun soon.
The guy I bought it from hydroformed over 100 pieces of brass and then fired them once so I am good to go. Just got to find somewhere close to stretch things out a bit.
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