6mm Super LR Barrel Life

[1shot]

I currently have 2 bbls. chambered in the 6mm S-LR. One in a 7.75 and one in 8 twist. The faster twist is used only for 115 VLD style bullets and the 8 twist for either DTACS or 105's. I previously shot a 6XC so it was a no-brainer to shift to the S-LR because I already had the dies. (6XC) I have good accuracy nodes with both bbls. in the low 3,000 fps to 3,120 range. With 115 VLD's the cartridge will shoot inside my 6.5x284 on a calm day at 1K. Now, if it’s gusty, the 6.5 will win every time. In regards to powders, I feel that is one of the important pieces to the puzzle of improving bbl. life. My two "go to" powders are H-1000 and N-160 depending on bullet weight. Both are cool burning and keep throat erosion to a minimum, and both have served me well.
I hope this helps,
Lloyd

 

[joesr]

There is very little difference between the 6CM and 6mm Super cartridges.

The barrel life we are getting from the 6CM and 243 for that matter, I believe to be the result of using H1000 or similarly slow burning powders.

My current barrel, I'm using for XTC shooting has over 3500 rounds through it (rechambered at 3100 rounds). It shows no sign of loosing accuracy. Last weekend I fired 3 600 yard matches at Reade Range in PA. I shot the only 200 fired all weekend at 600 yards and in one match I had 14X's. The other X counts were 11 and 10.

It is not the cartridge, but how you load it that results in dramatic increases in barrel life.

Joe Hendricks