6.8 X 43
Any body used one? Saw a program a few months back and it looked very interesting! Tested on metal targets with a 5.56 and 7.62 for comparison. Only the 6.8 knocked the plate over.
This was on future weapons.http://www.liveleak.com/view?i=87b_1223586322
You're referring to the 6.8SPC. It's not designed for hunting. It's basically a .270 calibre round driven at a slower speed for military applications. I'm not sure why you'd want to go down that road. Better to stick with tried and trusted cartridges.
I've tried an M4 variant (416) in 6.8SPC and it gives a lot more punch than the 5.45 or 5.56. But it is an assault rifle cartridge and not one designed or probably suitable for stalking, though I think the 115gr bullet would meet the min criteria.
That said sometimes in woodland or scrub a punchy short cartridge (assuming it meets the minimum requirements) would be great, but I think Frax mentioned a good solution to that in a capable lever action round.
Thats the one, but you say its not suitable for stalking being a military round. How many military rounds do we now use!
Come on with a good bullet I think this would be an excellent round.
The 6.8spc is capable of pretty useful velocity with a bullet like the .277 110gr Vmax, 2700-2800 fps I think.
Based on the .30Rem round, same case length as a 223 but larger diameter, designed to be an easy upgrade in M16 / M4 battle rifles.
I have read of a few people in the states rebarreling rifles such as CZ527's and Model 7 Remmies to this round.
I would have thought is would make an excellent woodland round for Roe and up to Fallow size deer.
Forgot to mention that the 1st 3 charts refer to 16" barrels and the last 3 10" barrels. I am sure with a 20" barrel and Varget or 4895 you can get even more out of the cartridge.
The force against the 6.5G is that for LMGs the 6.8SPC gives better extraction. 6.5G is a better cartridge, but in the automatic fire role the 6.8SPC is easier to build a receiver around. For deer or precision target work 6.5G would be a better option. Just my opinion.
All the best.
Craig, very interesting post.
Any info on barrel life between these? I presume a big factor when looking for a military round.
All SASS barrels and chambers should be spec'd as chrome-lined / -plated to give much longer barrel life. Much easier to clean also. You won't need to worry about barrel life in the M110 for example unless sustained semi-auto fire. But for a hunting rifle barrel life depends on your load and the quality of the factory or custom barrel.
I would think that between the two the 6.8SPc would give better barrel life for all the reasons why it is less exciting than the 6.5G.
It's just a guide, but I have a spreadsheet I use to roughly estimate barrel life. Based on 29 to 30gr of 2230 or H335 with 3700 to 3900 KJ/Kg (powder heat potential)you should get around 6650 rounds of serviceable barrel life for 6.8SPC. My guess is you'd get more than that, perhaps 7000rds or above.
Mauser66, interesting stuff.
While I have nnoo doubt the 6.8spc, or the Grendell for that matter will get the job done, I would be firmly in the camp of sticking with the tried and proven 308 or 30/06 based rounds.