KEY HOLE PROBLEM

skipglo

Well-Known Member
LRH Team Member
Joined
Jan 23, 2015
Messages
1,207
Location
Alberta
I have a browning Xbolt long range max in 6.5 PRC 7" twist 26" heavy sporter with a random key hole problem (see attached ) shooting 147 gr ELD match, H1000 or H4831SC moderate loads. action is torqued per mfg specs scope as well. bedded and full floated, I am shooting off a Sinclair F class bipod and rear bag. when I say random it may be 3,4, 5th shot, not over heated. I am very carefull with reloading, ES 12, SD 4.3, seat depth .050, neck tension seems fine. I am lost, never had this problem with any other guns, first plastic stock I ever had, I am thinking stock, bipod problem? HELP!! hop JE responds to this. Thanks for any ideas. Jim
You definitely are experiencing a stabilizing problem. Try 143 gr. or 140
 

beto

Active Member
Joined
Dec 18, 2014
Messages
39
I have a browning Xbolt long range max in 6.5 PRC 7" twist 26" heavy sporter with a random key hole problem (see attached ) shooting 147 gr ELD match, H1000 or H4831SC moderate loads. action is torqued per mfg specs scope as well. bedded and full floated, I am shooting off a Sinclair F class bipod and rear bag. when I say random it may be 3,4, 5th shot, not over heated. I am very carefull with reloading, ES 12, SD 4.3, seat depth .050, neck tension seems fine. I am lost, never had this problem with any other guns, first plastic stock I ever had, I am thinking stock, bipod problem? HELP!! hop JE responds to this. Thanks for any ideas. Jim
Sounds like you might try lighter bullets.
 

257Tony

Well-Known Member
Joined
Apr 8, 2013
Messages
808
Location
Utah
Had a killer load in my 28 with 180 ELD-M @3200 fps, nearly every time I'd fire a 3 shot group, shot #3 would mysteriously vaporize on it's way down range. Switched over to Berger 180 Hybrids, no problems since then!
 

vancewalker007

Well-Known Member
Joined
Mar 30, 2013
Messages
379
I have a browning Xbolt long range max in 6.5 PRC 7" twist 26" heavy sporter with a random key hole problem (see attached ) shooting 147 gr ELD match, H1000 or H4831SC moderate loads. action is torqued per mfg specs scope as well. bedded and full floated, I am shooting off a Sinclair F class bipod and rear bag. when I say random it may be 3,4, 5th shot, not over heated. I am very carefull with reloading, ES 12, SD 4.3, seat depth .050, neck tension seems fine. I am lost, never had this problem with any other guns, first plastic stock I ever had, I am thinking stock, bipod problem? HELP!! hop JE responds to this. Thanks for any ideas. Jim
A lot of people on the 3 6.5 PRC Facebook groups I'm on have reported problems with the 147 in certain rifling configurations and usually with a1:7 twist. The bullets jackets are giving way at the high twist rate. I want to say it's the 4 groove barrels doing it the worst. So it's likely not a stability issue but a mechanical issue with the bullet jacket splitting apart. At least that's been reported a lot with the 147 ELDM. If you tried a longer distance you might notice the bullet coming completely apart.
 

Tulsa Reiner

Well-Known Member
Joined
Jan 6, 2014
Messages
330
Location
Tulsa, OK
actual twist is 7 1/2 checked 4 times at different locations in bore, loaded some 140gr Sierra to try I am confident this is going to cure, also cleaned carbon ect, super clean
I've had no problem with ELD-X 143 grain bullets from my 6.5 PRC, 1:7.5" twist. And I've shot a couple hundred thru it.
 

Trending threads

Top