I had a 6x47 that was scary accurate. 1/8 moa = no bs. I'm not talkin about a lucky 3 shot group once in a while. I'm talkin back to back 5 shot groups day in and day out in clear conditions. If it shot outside 1/4 inch it was heavy mirage.
BUT it was crap with the lapua brass unless it was 90 F outside. Just not enough primer to light the powder. I had to use large primer brass like 22-250 or 6XC and that made reloading a time consuming process. For all the work, I'd have been better off just running a 6XC. But would the 6XC have been as accurate as the 6x47 with the 6XC brass? I don't know. That rifle was a dream if you want accurate.
Accuracy died sharply after 800 rounds though. The barrel was toast.
If a guy wants a 6xc or 6x47, chamber 2 barrels from the start and keep the first shot out barrel around for fire forming cases and save the 2nd fresh barrel for serious work. the first 800 rounds goes by pretty quick.
If you want to use this cartridge for f class you'll be real competitive on calm days out to 1000 but only to 600 in when the wind is up. Past 600 on windy days the 6.5s and 7mm will get you good. The BC just isn't there. BTW - don't believe the advertised BC for the 115s. It's less. I figure .535 is about right, based on my MV and come ups to 1000. Tubbs agreed.
You'll hear a lot of guys having a hard time working up a good load for the 6x47 because they are trying to do it with the small primer. It just doesn't work as advertised, not 2 days in a row anyway. After a boat load of load testing with the small primer brass before giving up on it, I can tell you that my best small primer load was not as good as my worst large primer load over the chronograph or on paper.
I had a number of conversations with David Tubb about it and he actually considered the small primer for the 6xc but Obermyer talked him out of it. Obermyer said he tried it at one time too and gave up also saying you just cant consistently light 38 grains of 4350ish powder with a small primer. He was certain that he made the right call especially after I shared my results with him. I just confirmed what he already knew.
If you look at bullet weight to powder ratios the 6x47 is right on the screws. (better than the 6XC actually) Take the bullet weight of 115/3=38.33 grains of powder. That's a quick recipe for a good target load. Find a case that runs good pressures at 38.33 grains of powder with the 115 and you'll have a shooter. It's a great rule of thumb.
I can also add that since the 6XC will run them just a little faster, it will shoot better with and 8.5 twist rather than an 8. If you run an 8 twist your accuracy will begin to degrade before you reach peak velocity. Again Tubbs agreed.
BUT it was crap with the lapua brass unless it was 90 F outside. Just not enough primer to light the powder. I had to use large primer brass like 22-250 or 6XC and that made reloading a time consuming process. For all the work, I'd have been better off just running a 6XC. But would the 6XC have been as accurate as the 6x47 with the 6XC brass? I don't know. That rifle was a dream if you want accurate.
Accuracy died sharply after 800 rounds though. The barrel was toast.
If a guy wants a 6xc or 6x47, chamber 2 barrels from the start and keep the first shot out barrel around for fire forming cases and save the 2nd fresh barrel for serious work. the first 800 rounds goes by pretty quick.
If you want to use this cartridge for f class you'll be real competitive on calm days out to 1000 but only to 600 in when the wind is up. Past 600 on windy days the 6.5s and 7mm will get you good. The BC just isn't there. BTW - don't believe the advertised BC for the 115s. It's less. I figure .535 is about right, based on my MV and come ups to 1000. Tubbs agreed.
You'll hear a lot of guys having a hard time working up a good load for the 6x47 because they are trying to do it with the small primer. It just doesn't work as advertised, not 2 days in a row anyway. After a boat load of load testing with the small primer brass before giving up on it, I can tell you that my best small primer load was not as good as my worst large primer load over the chronograph or on paper.
I had a number of conversations with David Tubb about it and he actually considered the small primer for the 6xc but Obermyer talked him out of it. Obermyer said he tried it at one time too and gave up also saying you just cant consistently light 38 grains of 4350ish powder with a small primer. He was certain that he made the right call especially after I shared my results with him. I just confirmed what he already knew.
If you look at bullet weight to powder ratios the 6x47 is right on the screws. (better than the 6XC actually) Take the bullet weight of 115/3=38.33 grains of powder. That's a quick recipe for a good target load. Find a case that runs good pressures at 38.33 grains of powder with the 115 and you'll have a shooter. It's a great rule of thumb.
I can also add that since the 6XC will run them just a little faster, it will shoot better with and 8.5 twist rather than an 8. If you run an 8 twist your accuracy will begin to degrade before you reach peak velocity. Again Tubbs agreed.
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