Indications of a worn barrel

[muffett.2008]

The M60 barrels might be okay, but it was the rest of the gun disintergrating around it in operation that was the concern

[Peter Laidler]

Very true Muffer. I was also going to add that what's the point of upgrading the old-hat M-60 when there's something better already in the US system. The FN-MAG, GPMG L7. I can't recall anyone ever saying anything bad about it. We still had BL prefix L7's at Warminster on the SF and PCD courses dating from 1965.

[rayg]

Two things I still remember way back when I was in the Army as a infantryman running with tanks in training in Germany and as a gunner on a Light Browning 30 06 MG w/ bipod and shoulder stock. The tanks ended the run up on a ridge overlooking a 1,000-2,000 yard open range/front with old tank and truck bodies as targets. And a real big mistake I made was to set my gun right next to, and to close to one of the tanks. Well when the first 90mm rd let go, my helmet flew off my head and that was it for my hearing for a couple of days. Second thing was between the ammo bearers we had about 2-3 cans of ammo we were supposed to shoot up. I set my sight at about 500 yds and started firing, not six rd bursts, but long ones in order to shoot up the ammo. After about a can was fired, I noticed dirt being kicked up a few feet in front of the gun on a mound of dirt I was shooting over. I adjusted the sight up more which corrected that at first but soon again more kicked up dirt. Again, I adjusted the sight up one more time and just before I finished the last can, the dirt was being kicking up again. After the shooting, my loader told me that it looked like the barrel was whipping up and down in the jacket probably enough to spray the bullets high and low. The barrel was glowing bright red and I took a stick and stuck it to the barrel and it started to burn. Not sure if they junked the barrel after that, Ray

[Merlin266]

Laying next to a tank when it fired its gun 😂, did that once and once only near a challenger, hells bells, film stars never flinch. I vaguely remember in being taught to balance the GPMG, using the gas adjustment, anyone refresh my mind with, why was a white mark painted on the, I think cocking mechanism?

[Bruce_in_Oz]

And at the "proper" rate of fire for the M-134, 4,400 rds continuous would have taken about 45 seconds! The "economy" rate was 3000 round per minute. Then again, with six barrels, that still translates to about 16 or 8 rounds per second per barrel, depending on the chosen rate.

The barrels for those things are incredibly "spindly" and have weird "tapered / stepped" rifling in their chrome-lined bores. The "bore" diameter is smaller at the muzzle end than at the breech end, probably to allow for expansion to "nominal" when they really get going. Harrington and Richardson made THOUSANDS of them back in the late '60's, early '70s; many of these ended up shipped to the great South-East Asian Wargames; to be expended in the field or "taken under new management" in 1975.

One of my great memories of recent years was a visit to Mr. Dillon's "Toyshop"! (Keeps hands firmly in pockets, drools a lot..........)

[CINDERS]

Guess this qualifies as giving the mini-gun curry think this is knob creek at the night shoot plenty of tracer and heavy caliber noise.
https://www.google.com.au/url?sa=t&r...EFHryDV_QXll1A

[Surpmil]

I see you can buy a comprehensive set of gauges in one thou increments on eBay quite cheaply. http://w w w.ebay.com/itm/161505969934?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT