New to the forum, 1st post and I'm looking for some guidance.At the suggestion of a site sponsor/vendor I'm posting my issue here in hopes of some ideas.
Here is the issue...
Got a new build in 6xc and the gun won't properly feed the cartridge with out jamming.
Gun:
Donor gun, savage 11 trophy hunter XP originally chambered in 308.(SA 4.4" spacing)
Left handed
Serial J7xxxxx (gun is new manufacture, within the last 11 moiths...this information is directly from savage)
Pulled the factory barrel and in stalled a 6xc criterion prefit.
Is sits in an Accuracy International chassis, with AI factory 308 mags(also tried a magpul)
Issue: when when cycling the bolt forward and picking up the round, the cartridge ends up jammed into the chamber with the case head higher than the nose of the bullet.
Think this way. When picking up the next round, the bullet nose works up the ramp, and at the exact time the nose starts to enter the chamber the base clears the mag.(and about the same time the shoulder of the case hits the top of the ramp) the timing of all this along with the force of the follower/or next round moving upward in the mag kicks the case head upward enough to where the case head is higher than the nose(essentially inverted) so it's pretty much entering the chamber from top to bottom. And from what I can tell, the actual nose of the bullet is driving into the area of the chamber where the case shoulder is. Where the nose hits in the chamber, accompanied by the downward angle of the cartridge, the bolt driving forward wedges the cartridge upward and locks down.(the case head is actually a little above the bolt at this time. taking off the pressure of the bolt allows the case to fall and properly align and will then feed.
What I've tried: cycling the bolt slower than a snail's pace will work, but that's not a fix....nor is single feeding the answer.
Bent the crap out of the AI mags feedlips in every way to no avail. Opening them up to where the lips barely hold the round has had some effect but not a 100% fix.
Ive ruined a magpul AI type mag with no success. Cut some off the spring, dremeled the lips and even cut them back to where only about 5/8" is holding the case.
Put the action back into the original savage stock, magazine and I get pretty much the same results.
Questions, is there any difference in savage receivers pertaining to specific calibers.This same gun is factory chambered in 204, 22-250, 243, 6.5cm, 260., etc models so I think those models would feed correctly? Especially the 22-250 & 243.
Talked to NSS about the issue and although the are great people to deal with and tried to help as much as possible.... they had no answers either.
Lastly im gonna put 308 barrel back in the original configuration and see if it cycles 308 dummy rounds.
Thank s and feel free to chime in with any advice or questions.
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