Re: 6.8spc
Posted: Thu Aug 26, 2010 1:40 pm
Jason,
I don't disagree with your observation that it is an adequate cartridge for deer, at a reasonable distance, and hogs, but silhouette is very different. Silhouette is not a short range game. The 6.8mm bore (.270) lacks a choice of match bullets comparable to those available for the 6.5mm or 7mm bores, as Tony commented earlier. The weight of bullets available for the 6.8mm bore is not sufficient to generate 500 meter momentum comparable to that of most of the 6.5mm and 7mm bullets from suitable cartridges. Even in a .270-308 the bullets are a substantial limitation. Even Ackley thought that there was little reason to shoot a .270-308 when compared to a 7-08. Those are some major disadvantages.
The 6.8 SPC was created to feed from an AR length magazine and any bullets of greater weight will need to be seated to a longer than AR mag length to free up case capacity for powder (and a suitable chamber used). While brass is currently available, the ultimate fate of the 6.8 SPC remains uncertain, at best. There were improprieties associated with the initial government procurements and there simply is no great likelihood that it will see widespread deployment in the U.S. armed forces at the present time. There are also questions about the selection process of the cartridge itself. Information available to the public suggests that there may well have been a pre-selection of someone's pet project rather than an objective evaluation of alternatives. At the present time there does not appear to be any rush on the part of the armed forces to adopt the 6.8 SPC. There are vast differences in a few spec ops teams using something and it being adopted throughout the armed forces. At present, there are substantial issues surrounding what weapon system will be adopted to replace the M-4 and whether it will continue to use the 5.56 NATO cartridge. If the 5.56 NATO cartridge is replaced, there will probably be a new round of trials conducted.
The 6.8 SPC could easily become an "orphaned" cartridge. On the other hand, if you are pleased with your 6.8 SPC, I am happy for you. If you want to try it at silhouettes, go right ahead and please let us know your experience with it. I could see where it might work at a reduced distance course, but I would not be prepared to recommend it to anyone. That is my opinion. "Your mileage may vary."
P.S. While the 6.8 SPC may work for hogs under a number of circumstances, there are a variety of hogs which have a pretty tough hide and have been known to literally have 44 Mag bullets bounce off.
Cheers[/quote]
I stated that it is not a good choice for silhouette. What else do you want me to say?
44mag bouncing off of hogs!!! Come on!! Are we talking at rifle ranges or up close like it is used for?
I don't know where you get your info on the 6.8x43. Believe only a small portion off what you read on the subject. We could pick any two cartridges and debate all day. That's why they make so many choices of cartridges. Everyone has their favorite.
For short barreled 16" and less M4 Ar style rifles the 6.8 shines. Not for 500 meter silhouette.
I don't disagree with your observation that it is an adequate cartridge for deer, at a reasonable distance, and hogs, but silhouette is very different. Silhouette is not a short range game. The 6.8mm bore (.270) lacks a choice of match bullets comparable to those available for the 6.5mm or 7mm bores, as Tony commented earlier. The weight of bullets available for the 6.8mm bore is not sufficient to generate 500 meter momentum comparable to that of most of the 6.5mm and 7mm bullets from suitable cartridges. Even in a .270-308 the bullets are a substantial limitation. Even Ackley thought that there was little reason to shoot a .270-308 when compared to a 7-08. Those are some major disadvantages.
The 6.8 SPC was created to feed from an AR length magazine and any bullets of greater weight will need to be seated to a longer than AR mag length to free up case capacity for powder (and a suitable chamber used). While brass is currently available, the ultimate fate of the 6.8 SPC remains uncertain, at best. There were improprieties associated with the initial government procurements and there simply is no great likelihood that it will see widespread deployment in the U.S. armed forces at the present time. There are also questions about the selection process of the cartridge itself. Information available to the public suggests that there may well have been a pre-selection of someone's pet project rather than an objective evaluation of alternatives. At the present time there does not appear to be any rush on the part of the armed forces to adopt the 6.8 SPC. There are vast differences in a few spec ops teams using something and it being adopted throughout the armed forces. At present, there are substantial issues surrounding what weapon system will be adopted to replace the M-4 and whether it will continue to use the 5.56 NATO cartridge. If the 5.56 NATO cartridge is replaced, there will probably be a new round of trials conducted.
The 6.8 SPC could easily become an "orphaned" cartridge. On the other hand, if you are pleased with your 6.8 SPC, I am happy for you. If you want to try it at silhouettes, go right ahead and please let us know your experience with it. I could see where it might work at a reduced distance course, but I would not be prepared to recommend it to anyone. That is my opinion. "Your mileage may vary."
P.S. While the 6.8 SPC may work for hogs under a number of circumstances, there are a variety of hogs which have a pretty tough hide and have been known to literally have 44 Mag bullets bounce off.
Cheers[/quote]
I stated that it is not a good choice for silhouette. What else do you want me to say?
44mag bouncing off of hogs!!! Come on!! Are we talking at rifle ranges or up close like it is used for?
I don't know where you get your info on the 6.8x43. Believe only a small portion off what you read on the subject. We could pick any two cartridges and debate all day. That's why they make so many choices of cartridges. Everyone has their favorite.
For short barreled 16" and less M4 Ar style rifles the 6.8 shines. Not for 500 meter silhouette.