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I have a DLO 1919a4 FA and I have been reading everything on this forum and 1919a4 forum that I can find about how to properly headspace the weapon. I read a post on 1919a4 forum that said the headspace gauge is ok if you are using only U S military ammo, anything else you should tear down gun and headspace using a round of whatever lot of ammo you are going to shoot. I am well aware of how critical headspace is,not trying to cut corners. Any info would be much appreciated.
Thanks
jd4230ps
 

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I will try to answer this but advise you to get a few G.I. Manuals. I have seen several ways to do it, some with the bolt and barrel out of the gun. This is what works for me. With the gun assembled, hold or lock the bolt back. Turn the barrel in to the receiver until the bolt will not go forward into battery. You can check this by releasing the bolt after turning the barrel in a few notches. You can turn the barrel from the rear with a screwdriver in the barrel notches. Once you get the barrel far enough in that the bolt will not go forward into battery, turn it out one notch at a time until the bolt will go forward into battery. Then turn it out one more notch and you are done. At this point you need to take the gun to the range and shoot it. If it seems sluggish, turn the barrel out another notch and try again. A lot depends on the ammo. I have found that different ammo may need one or two notches more or less then worked with the last ammo. If the gun is running faster then it did with the last kind of ammo you used, or you start getting case head separations, you may want to tighten the barrel a notch or two. You should definitely buy some books on the Browning MGs. Dolf Goldsmith has written the definitive series on the BMG. Long Mountain sells a book that has reprints of a bunch of BMG shop manuals. They are all worth getting. The 1919a4 web site is also very informative.
 

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Discussion Starter #3
Thanks

Thanks for the help WW9853. Iwill get the manuals and I have read all I can find on 1919a4 forum.
 

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If your running FA you may need to go two clicks past closing as it heats up it may need more room.. there are also HS gauges you can use but only if your shooting Military Ball factory ammo.. you must figure out the timing as well.. if it's not a izzy gun and is 30-06 US the trigger will need to be bent.. the izzy has a adjustment screw and lock nit that can be adjusted for the timing .. B2B
 

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If your running FA you may need to go two clicks past closing as it heats up it may need more room.. there are also HS gauges you can use but only if your shooting Military Ball factory ammo.. you must figure out the timing as well.. if it's not a izzy gun and is 30-06 US the trigger will need to be bent.. the izzy has a adjustment screw and lock nit that can be adjusted for the timing .. B2B
This is good advice. I shot out a barrel at a mg shoot; it was worth it. We caught a car on fire and everyone on the line had the same idea I did P_G I put ammo can after ammo can into that car and when I stopped it was slowing down.

The 1919 is one tough gun. I keep a spare barrel I've already headspaced with the lock frame attached in my case. It's not a guarantee if you have to swap them, but in my experience so far I've been able to swap them out and make no adjustments if nothing else has changed (ammo type, same bolt etc.)
 

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This is good advice. I shot out a barrel at a mg shoot; it was worth it. We caught a car on fire and everyone on the line had the same idea I did P_G I put ammo can after ammo can into that car and when I stopped it was slowing down.
That sounds like a damn fun but brutally expensive way to burn down a car... If it were me I'd have gotten a few bags of ammonium nitrate, some sodium chlorate & sugar, a fuze, and would have then gotten the hell out of there, saving two or three cans of 30/06 for use in the BAR or Garand DIEVIL

I've a friend here in the DC area who's father has both an M1918 with the original wooden firing cart, and an M1919. He says that while they're more fun than a man should be allowed to have, they're also bankrupting him. As a result he says he sticking more to firing his French 75mm and Civil War mortars... says it's cheaper GI3
 

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Proof Positive: This is my S/A Shorty 8MM 1919A4. Head Space it every time I clean it and re-assemble the "guts". Runs great on belts or links!

 

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I much prefer the cloth belts.
My buddy had a belt filling machine.
With 2 people on the gun, and 2 people on the belt filling machine, the "belt fillers" could nearly keep up with the "gunners".DI2
 

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I have a BFM, but the needles never work right. I've adjusted and adjusted, but different manufacturer belts cause problems, and new stiff ones do too. I need a shuttle conversion really bad.....
 

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When I had a 1919 I headspaced off the ammo I was shooting. .308 in an Izzy barrel I chambered a rounds and screwed the barrel in until it stopped on the chambered round then backed off 3 clicks.

My 8mm barrel liked 2 clicks backed off.

YMMV
 

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I used a gauge one time and it was set too loose.. I had case separations and blew a top cover..My 8mm likes the headspace tight,, but it is a semi.. so all that happens is, it starts having a few stoppages when it gets dirty...being too tight..that is a semi's version of sluggish.. I usually just spray it down..with oil and it runs good again.. but tight is better than loose, for me... because blowing a top cover and case separations are a bummer... I agree that a FA gun would start to eat your paychecks PDQ with today's ammo prices.. but they'd be fun spending that money... B2B
 
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