I have been loading 140 grain x-bullets in a .270 weatherby with groups averaging between 1-1.5".Yesterday I tried some of the 130 grain XLC coated bullets ,and groups were terrible.4-6" groups with an occasional 10" flyer.Why do the coated bullets not shoot like the regular x-bullets?Also,does anyone know what is good to take molycoating of bullets with?I think I read somewhere before that acetone and some other chemicals would work?
When your cartridge detonates, the shock wave travels to the muzzle much faster than the bullet does, since the speed of sound in steel is about 10X what it is in air. Your rifle was obviously designed so that "normal" bullets arrive at the muzzle at a time that the muzzle is in a slow moving part of its motion. The lubricated bullet arrives at a time when the muzzle is in a fast moving part of its motion. I did a very rigorous test in my .223, and the XLC definitely has inferior muzzle velocity, as compared to ordinary bullets. You may be able to solve the poor grouping by tweaking the load and the bullet seating depth a little. The muzzle velocity problem can't be cured by any means I know about.
Posts: 2281 | Location: Layton, UT USA | Registered: 09 February 2001
I have to agree with a 10" flyer you have gun, scope or bedding problems, not bullet problems...the coated bullets have a good reputation among a lot of shooters...I personally don't adhere to them, but they do shoot wonderfully in some rifles....My best accuracy in a 300 H&H is the 165 gr. Barnes X coated bullet...I just don't happen to like them for hunting..many well experienced huters do like them for hunting.
I did shoot the non-coated x-bullets with some degree of accuracy.I don't think that it has nothing to do with the gun seeing as how I shot a factory load after the flyer and it shot dead on.I have no problems with the non-coated bullets,just that the coated bullets do not shoot within the same degree as the non-coated ones.I tried these bullets in other calibers with the same results.QUOTE]Originally posted by Atkinson: I have to agree with a 10" flyer you have gun, scope or bedding problems, not bullet problems...the coated bullets have a good reputation among a lot of shooters...I personally don't adhere to them, but they do shoot wonderfully in some rifles....My best accuracy in a 300 H&H is the 165 gr. Barnes X coated bullet...I just don't happen to like them for hunting..many well experienced huters do like them for hunting.
