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dmshozer1

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Posts posted by dmshozer1

  1. Here is the situation.

    A DPMS upper - 16" barrel with a full length gas tube. Accuracy is supurb. I got lucky and when shooting groups it stayed under .5" at 100 yds. At this age and with my eyes I never expected that with anything. Anyway, the reliability just isn't there - bolt doesn't reliable pick up another round. After trouble shooting the various possibilities - magazines, chamber, bolt, gas tube, etc., etc., it seems to come down to an oversized gas port or hole or whatever it is called in the barrel. And that's what the gunsmith tells me. I tend to believe him since he does a lot of good AR work.

    So it's new barrel time but I don't want to lay out that much money, really I can't right now, and this barrel shoots real well. I was wondering if maybe one of the adjustable gas blocks like what JP makes could be used to adjust gas flow in place of replacing the barrel and a smaller gas port. Has anyone done this sort of thing when working around this sort of situation?

    Viggen, click on page two to read what I had to say about 16 inch rifle length barrels and trust me, it is the truth!

    I have the exact same barrel and yes, mine is a tact driver too!

    I would bet that a carbine buffer spring in your gun would make you a happy camper!

    Oh yeah,my gas port is .100.

    Another thing, do not put heavy grease on the buffer spring as it will slow the action down.

  2. BTT

    Times a wastin...

    Git yer apps in.

    This is not to be missed

    yeah, I am prejudiced...

    Why not? Its a great match...

    Three Divisions, no waiting... (Wait a minute, thats from my old barber shop)

    Anyway, you come, you have fun, you win $$

    Stay for day two and shoot our 7 stage pistol match.

    We now return you to your regular thread

    Jim, when are the stages and round count going to be posted?

  3. David,

    For the past 6 years I have been using two different 16 inch barreled guns for 3 gun matches. No problems at all!

    One is light; the other is heavy. Both gas ports are .100,3 inches from the end of the barrel.The hole location will

    be determined by how far the rifle length gas tube goes into your receiver with the carrier installed. Make sure it

    does not bottom out in the carrier key or your bolt and carrier will not close.

    Every thing else in both guns is stock except for a light buffer, carbine buffer spring, and a rolling thunder comp.

    Both guns will run light or heavy ammo.

    Everyone comments on how soft both guns shoot!

    Do it, you will be happy!

    I have a stainless 1-8 Lothar Walther blanc that I want to turn in an upper for IPSC shooting. (max range is 200 m)

    Of course I am looking for the less possible recoil. (Brakes available in Europe are Miculeck,JP tank,Jp Cooley, and even a few Rolling thunders)

    From reading and searching on this forum I know that the rifle system is the way to go, but isn't the barrel to short for this? (after threading and turning the finished length will be 16 inch)

    I was thinking that maybe when starting with a gas port on the large side and then using a adjustable gas bloc one could make it work.

    The lightest bolt carrier I have found over here is one from a Colt rifle (semi circel rear end) If needed I can still lighten it by machining.

    I want to go with an adjustable carbine stock so my girl friend can use the same rifle.

    Hope you guys can give me some suggestion on what works really well.

    David

    Have you ever fired that with out the comp attached? I just wondering if it made any difference in cycling.

    Yes I have, no problems!

  4. David,

    For the past 6 years I have been using two different 16 inch barreled guns for 3 gun matches. No problems at all!

    One is light; the other is heavy. Both gas ports are .100,3 inches from the end of the barrel.The hole location will

    be determined by how far the rifle length gas tube goes into your receiver with the carrier installed. Make sure it

    does not bottom out in the carrier key or your bolt and carrier will not close.

    Every thing else in both guns is stock except for a light buffer, carbine buffer spring, and a rolling thunder comp.

    Both guns will run light or heavy ammo.

    Everyone comments on how soft both guns shoot!

    Do it, you will be happy!

    I have a stainless 1-8 Lothar Walther blanc that I want to turn in an upper for IPSC shooting. (max range is 200 m)

    Of course I am looking for the less possible recoil. (Brakes available in Europe are Miculeck,JP tank,Jp Cooley, and even a few Rolling thunders)

    From reading and searching on this forum I know that the rifle system is the way to go, but isn't the barrel to short for this? (after threading and turning the finished length will be 16 inch)

    I was thinking that maybe when starting with a gas port on the large side and then using a adjustable gas bloc one could make it work.

    The lightest bolt carrier I have found over here is one from a Colt rifle (semi circel rear end) If needed I can still lighten it by machining.

    I want to go with an adjustable carbine stock so my girl friend can use the same rifle.

    Hope you guys can give me some suggestion on what works really well.

    David

  5. Dean, thanks to you and whoever else had anything to do with with making this match happen!

    Congrats to the class winners, they earned it!

    RAIN! ALL DAY! Could not have gotten any more wet unless i dove under water, which i tried to do on stage 7 shooting the low port. Then after the first shot, mud got on my scope and my glasses, and that was all she wrote!

    Did i have fun, yup. would i do it again yup!

    GREAT prize table! My DPMS 45 rounder crapped out on stage 1 but then i picked up a 48 round Lancer off the prize table.

    Cant wait for next year!

    Dave Staub

  6. Here are the stages: :bow:

    Mike,thank you for the round count.

    Pistol :

    32 rounds Comstock , 15 IPSC ,2PP

    28 rounds Comstock, 14 IPSC * (also a rifle stage) :D

    30 rounds Comstock, 15 IPSC

    Rifle:

    28 Rounds Comstock *14 IPSC

    34 Rounds Comstock (rifle range) 17 IPSC :o

    28 Rounds Comstock 14 IPSC

    Shotgun:

    22 Rounds (Slugs) Comstock , 10 IPSC, 2 Plates :surprise:

    23 Rounds Comstock, 5 PP, 4 USP, 8 Clays, 6 Plates

    24 Rounds Comstock, 4 PP, 6 USP, 10 Clays, 4 Plates

  7. Dean, great to have people like you in our sport. Some would have said, screw it, I need to go shoot something!

    Call it the Area 8 Multi Gun, Dean's Match, I don't care, it's a 3 gun match and I can't wait to shoot it!

    What to expect at a Dean's Match? A lot of fun and probably some nasty stuff! Can't wait!

    Seriously Dean, thanks for staying with it!

    Dave Staub

  8. Gary - On "Good Day at Black Rock" scored hits are "per time plus scoring" which seem to be different from the rest of the stages. What does "plus scoring mean"? Also, what does "plus bonus for accuracy" mean in the explanation you gave on your post about scoring. How is the chrono to be run? Separate stage? Use your guns or competitors? Thanks.

  9. Except for a slight slug problem now and then, my Browning Gold has run 100% on birdshot for years ... really. All of a sudden, on occasion, after firing a round the next shell remains in the magazine tube held by the carrier latch. Gold owners know that after firing a shot the next shell normally comes out of the magazine tube about 5/8 inch. What is happening is that the shell is remaining flush with the magazine tube. To cure the problem as it happens, I pull the bolt back, release it, pull it back again, and it feeds normally. I researched Browning Gold problems and could not come up with this particular one.

    I have periodically, as needed, changed the carrier latch spring (shortened), mag tube spring, main spring, and anything else that looked worn.

    Does anyone know if Jerry Harp can be contacted? He seems to have disappeared.

  10. Dave,

    Delrin is a form of tough plastic.

    The rifle spring is longer than the carbine spring. I'm not sure if there's a force difference between the two per inch but the carbine has less force when used in a rifle length tube.

    You can use a carbine size spring in a rifle length tube and buffer if you need to lower the amount of resistance to the gun cycling. If your gun is short cycling like mine was--running a carbine spring may allow it to fully cycle.

    Wolf Springs offers buffer springs in Standard rifle, XP rifle, RP rifle, standard Carbine, and XP carbine.

    There are different ways you can set up your recoil assembly. High weight(more inertia) or light weight(less inertia). Each way will require you to tune your spring and/or adjustable gas block. If you are using an adj gas block, make sure your rifle is hot before finalizing your adjustment. Sometimes ARs will bleed off more gas when they get really hot.

    I still need to do a bunch of experimenting with the light buffer concept. I made 4 different styles of buffers to try out.

    Nick

    Nick

    Thanks once again for the response. Good explanation -- I think I get it. I think I will get an adjustable gas block, some buffers, and springs and go at it. I will let you know how I make out. This may take some time. Once again, thanks.

    Dave

  11. Are your friends running a cut-off buffer spring? You may not want to do that.

    I was running a delrin rifle size buffer with a carbine buffer spring this weekend. Carbine spring was required with the 4.5OZ AL buffer I was using. I watched someone else shoot it and the front was lifting off the bench with the 1.8OZ delrin buffer. I put in the 4.5OZ buffer and it didn't move at all. I think it was the carbine spring that was not allowing the light buffer to work the best it could.

    I had another AR with a ported barrel and stock rifle buffer and spring. After trying it out stock, I put in the delrin buffer and it cut muzzle jump by about 1/3 to 1/2. So I think if you find out the right combo you may be happy.

    I was amazed how different it felt running the light buffer. You couldn't feel it hitting like with the standard buffer.

    Nick

    Fastshooter thank you for responding. Please excuse my ignorance -- I do not know what a delrin buffer is. In my gun is a stock carbine buffer. It weighs 3 ounces. My friends do not cut off springs ... my idea. My shooting friends with JP lightweight systems tell me they run their gas system wide open for reliability. Can you explain the difference between carbine and rifle springs and why you would use one versus the other? Thanks a bunch.

    Dave

  12. Got bored the other day and removed bolt, carrier, buffer and spring. Everyone I know is running a light weight buffer, carrier. I took the weights out of my buffer and ground everything off the carrier that I could. Took 1 ounce off of carrier, cut 3 coils off recoil spring. Went to the range and did not see any difference in felt recoil or double taps. Why not?

    I know most people that run lightweight systems have adjustable gas blocks but at least the ones I know run them wide open. My gun is a 16-inch heavy barrel rifle gas system, Cooley comp - runs 100%.

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