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re: Garand Thumb stress tested a PSA Freedom Rifle and the barrel finally died at 6k rounds...
Posted on 3/4/24 at 8:08 am to finchmeister08
Posted on 3/4/24 at 8:08 am to finchmeister08
quote:was any maintainence done between cool downs.... if not, who lets their rifle continue to fire without any lube.
YouTubes
lots of info in this one and i might've gotten some of it wrong, but:
barrel groupings lost milspec MOA just over 6k rounds.
bolt extractor began to wear out around 5k rounds.
a full-auto was used to expedite the round count, but not in the form of a "burn-down" that most Gun Tubers do. towards the end of the video, GT mentions that it was 3 mags and cooled. you can see his pants change throughout the video so it was done over the course of a few days.
stock gas tube and gas block survived the test, but the tube was worn.
they had a guy from BEXAR ARMs come out and run spec tests on the BCG and barrel after the test.
- BCG was surprising still within spec although the top rails were worn significantly as it rode only the top of the receiver.
- barrel chamber had some serious machining marks.
- gas port was a bit worn mainly due to full-auto
"i would suggest this rifle for someone that isn't serious about shooting. If you want a duty grade weapon at the lowest price point, I suggest BCM. "
i wasn't expecting that response.
Posted on 3/4/24 at 10:29 am to CarRamrod
quote:
if not, who lets their rifle continue to fire without any lube.
Too many people.
I have a new tungsten disulfide powder i mix in to my moly grease. Apply a light coating and then cycle the weapon... A lot.
The powder isn't easily removed (understatement, it's impossible). A few applications in and I run a few guns basically dry.
Posted on 3/4/24 at 2:52 pm to CarRamrod
quote:
was any maintainence done between cool downs.... if not, who lets their rifle continue to fire without any lube.
The edits are deceiving. They said they basically ran 3 mags, then cooled to ambient temp (30-40 degrees F) then tested and continued firing again. They also did lube a little bit every couple thousand rounds.
I think their main criticism of the barrel was that they expect combat grade hard chrome-lined barrels from FN, Colt, etc to go around 12-15K before they started to lose their accuracy that badly.
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