PDA

View Full Version : Awesome Cutaway, 6.5x47 Lapua, 4k Rounds


janus408
09-05-2013, 5:30 PM
http://i.imgur.com/y31VEPbh.jpg

http://i.imgur.com/LdNFMvM.jpg

http://i.imgur.com/EDI3xKlh.jpg

http://i.imgur.com/wf2KCHe.jpg

russ69
09-05-2013, 5:58 PM
That's a lot of erosion for 4000 rounds, I'm guessing. Fairly hot loads?

ar15barrels
09-05-2013, 6:42 PM
That's a lot of erosion for 4000 rounds, I'm guessing. Fairly hot loads?

I think that's pretty normal erosion for 4000 rounds through a 6.5 Lapua.
6.5 Lapuas typically eat a barrel in 2500 rounds.
Hot loads don't reall dramatically change the life of a barrel.
What changes the life of a barrel is getting the barrel HOT and then continuing to shoot it while it's hot.

russ69
09-05-2013, 7:08 PM
I understand bench rest accuracy disappearing fairly quickly, I even understand highpower rifles reducing their X count on a fairly quick basis but darn, 2500 rounds isn't that many. I guess that's why the high masters always have a fresh barrel waiting and ready to go.

zfields
09-05-2013, 7:35 PM
Very cool, thanks for posting.

Pthfndr
09-05-2013, 7:39 PM
6.5x55 after 3600 rounds of 139 Scenars at 2950 fps. Was still shooting .5 moa groups, but velocity had dropped to about 2600 fps.

http://img.photobucket.com/albums/v47/Pthfndr/Tikka/shotoutbarrel1.jpg

http://img.photobucket.com/albums/v47/Pthfndr/Tikka/shotoutbarrel2.jpg

http://img.photobucket.com/albums/v47/Pthfndr/Tikka/shotoutbarrel3.jpg

nubrun
09-05-2013, 8:00 PM
What load are you running? I am pushing the 130vld at 2950 with h4350.

MarkInFolsom
09-05-2013, 8:25 PM
A little off topic. But what was used to section these barrels? Band saw and then grinding? Cold saw?

russ69
09-05-2013, 8:35 PM
A little off topic. But what was used to section these barrels? Band saw and then grinding? Cold saw?

I see end mill marks.

CobraRed
09-06-2013, 12:44 PM
I see end mill marks.

Ditto

Thanks for the 6.5x55 pics Pthfndr

LynnJr
09-06-2013, 8:54 PM
I think that's pretty normal erosion for 4000 rounds through a 6.5 Lapua.
6.5 Lapuas typically eat a barrel in 2500 rounds.
Hot loads don't reall dramatically change the life of a barrel.
What changes the life of a barrel is getting the barrel HOT and then continuing to shoot it while it's hot.

This