caspian guy
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Posts posted by caspian guy
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On 7/15/2019 at 9:44 AM, fieryotaku said:
how would I go about converting it to a normal linked barrel? I called them and they said they would get Claudio the guy who probably made the gun originally to look into it but if I can convert back to a regular barrel that would be great.
Claudio is generally the right guy to talk to there if you can get to him.
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17 minutes ago, mveto said:
I have one and really like it, it’s my first backpack style range bag and it’s way more organized than a standard range bag. I like having everything in a specific area and not needing to search through big compartments looking for something. The only downside is the area that holds the ammo is not as rigid as I would have liked.
Other than that it looks promising. I bet you could reinforce the bottom compartment like ced/daa does (looks like they use some heavy corrugated plastic formed into a hoop) i think one of the earlier style backpack style bags I had used a u shaped piece of plastic to make it more rigid (maybe that was an old style ced (can't remember.) Thanks for sharing your impressions.
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21 minutes ago, broadside72 said:
This does raise a question in my mind. 8.1.2.3 says "hammer FULLY down" yet a decocker rarely makes the hammer go FULLY down. The Prod/CO rules say "hammer down" is
but that is not FULLY down. Much like facing downrange versus facing directly downrange or standing in the box versus standing completely in the box.
So should a decked gun need the safety on?
I get that 8.1.2.3 says fully down or cocked. Nothing in between is supported.
Check with NROI on that.. I think the interpretation is that for decocker guns wherever the gun decocks the hammer to is fully down.
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3 hours ago, CSEMARTIN said:
I open my right hand to the side of the ejection port and use my left hand on the front cocking serrations to carefully pull the slide back. The round gently drops right in my hand.
Yep that's my method as well. Having seen a couple of ejector fire incidents up close as an RO and a shooter I prefer this approach.
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26 minutes ago, euxx said:
There's always been 3 people responsible and new gadgets don't change that.
1) RO holding timer is responsible for getting time properly recorded on the timer
2) Score keeper is responsible for time properly transferred from timer into the scoresheet. Before it was verbally communicated and verbally confirmed as it was written on the paper. Now it is transferred tirelessly from timer to electronic scoresheet in PractiScore and still can be verbally confirmed between RO and scorekeeper. Now both of them have access to information about number of shots and last splits recorded.
3) The competitor is responsible for verifying and then accepting his score
+1 regardless of timer/RO the competitor is responsible for making sure his score /time is accurate.
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From what I understand from some reading around rocket nozzle physics, the angle of the of the cone shape that the port makes (15 degree included angle) and the area of the exit port matters. The rib lets you do that. My understanding is that the guy who originally designed this barrel setup used to work in aerospace. I think that's a consideration as well. http://www.braeunig.us/space/propuls.htm is interesting (but a little dense)
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Yea... Not the best installment.
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I think as time goes by the brass will get more expensive but unavailable, no...
The FBI dropped 10mm years ago and yes 10mm brass costs more than it did when I could get 1x fired but I can still get it from several sources to feed my single stack gun.
Too many 40 pistols have been sold for it to disappear.
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21 minutes ago, Chris iliff said:
That’d be interesting, but remember,...I’m not really talking about a CO gun.
The CO gun winning just caused me to think,....how much more could he have won by, if he didn’t have to follow all the restrictions in CO??
Basically, a heretofore never developed minor gun in open.
So I was curious enough to look it up... The current world Open record for the main match is 74.84 shot by Max (2016). Max also held the previous CO record at 81.38 (2018).
So this year in the main match BJ set a new CO record at 75.37. (Max was at 81.21 in CO and 82.60 in Open )
So short of doing hard core data analytics what I can say is the world record time for CO dropped by about 8% and it is less than 1% slower than the open record.
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Be curious to see the open world record times (maybe held by Max/Bj?) against their CO times this year? To see what the comparison is between Max's max CO effort and max open effort. (trying to find a common yard stick to judge the OP's conjecture against.)
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They could cut the entire back of it past the dot module off and put modern electronics in it probably increase the battery life by 100x... But that would require new injection molds and design work that would have to be paid for in cost savings or increased price. Betting they have decided its not worth it.
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Dpp 7moa triangle. I like the dpp with the small dot but having had and tried both sizes, the bigger dot works better for me on the clock (easier to track)
That is a similar conclusion I had come to for optics on my open guns as well. Started out with like a 4moa cmore dot module. After a number of years I settled on 8moa dot modules.
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You could always measure them to make sure some thing isn't really off. But, when I am fortunate enough to get a fit that tight I heat the receiver gently and cool the barrel and tap them together exactly as you describe. I usually only bother with bearing retaining compound (green loctite) when the fit is loose.
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Curious about the basepad on your mag?
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2 hours ago, WhiteDingo said:
I'm not Doug, obviously, but I've been very pleased with the PTR 9 we have as a post sample for rent at the range. Tens of thousands of rounds and it just chugs along great. No parts coming loose or breaking, accuracy is still good, and the trigger has finally smoothed out!
I detail stripped it the other day for cleaning and swapped in a new extractor spring out of an abundance of caution.
Our MPX eats through extractor springs like they're going out of style. Ate disconnector springs on the trigger as well until I swapped out the milspec arrangement.
Cool i guess that's what I'd have expected.. the 308 ptr I have has been a good gun.
Yea hks rifles aren't notorious for wonderful triggers are they?
I keep hoping with more clones on the market someone will offer a better after market trigger for them. It's not as if it can't be done, I have a PSG1 trigger pack I picked up that I use in my PTR and my Hk94 which is really good. Shame no one reproduces those.
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9 hours ago, Doug H. said:
I just sold a GMR-13 to buy a PTR 9ct MP5 clone. I have a couple of AR-15 SBRs, including a QC10 9mm but the MP5 is an iconic gun that begs to be shot in PCC matches.
An MP5 has some disadvantages but like shooting single stack that is part of the fun. I’m shooting the PTR in non USPSA PCC matches now and when my Form 1 comes back I’ll shoot it in USPSA matches.
Doug
Cool, let us know what you think of the ptr, I have one of their 308s but haven't had a chance to handle one of their mp5 clones.
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The meopta is eotech/aim point bright with a fresh battery.
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9 minutes ago, Hi-Power Jack said:
That's my guess.
Also looks Very Solid - bet it would put up with any punishment I've inflicted over the years.
Great idea, actually.
Yep James was faster than me...
If you look carefully it looks like the front sight is mounted on a block attached to the barrel instead of the slide (like an old sti tru sight). That would make the sights almost non-reciprocating which would make them easier to track as well as the gun cycled. Same sort of effect as an old highstandard target pistol I have.
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6 hours ago, thx1138jt said:
Exatly what I was wondering.
And what hat is the purpose of having the rear sights hanging out like that? For a bit more sight radius? Use it as a slide racker?
I'd assume it's to get more sight radius and still fit in the box for Ipsc standard division.
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Being 6'4" with long arms an 11.5" or so gun is about as short as I can drive aggressively.
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Very cool. Corporate memos sure don't look like that any more.
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I vote you start with what you have and spend some time learning your hold overs. While it's not optimal with some practice a decent optic and trigger you can make it work.
If you want to buy something by all means get a JP15 or a CTR. If you asked me who built a better rifle I'd be at a loss to tell you. Plus if you decide to sell it later you won't take much of a loss on a factory JP gun.
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12 hours ago, troupe said:
How soft is the MP-5 over the AR and MPX. It has been a very long time since I shot a MP-5 and back then, PCC was never thought of.
For me I'd say the MP5 is a lot softer/smoother than a normal blowback AR. I never bothered to shoot mine back to back with a really well tuned blowback AR (JP or something like that) or an MPX, so not much help there.
If I think about it maybe after a match I'll see what I can borrow.
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I ran my hk94 for a while in pcc. I had a B&T style rail adapter that clamps to the top of the receiver with a cmore on it. That plus a psg1 type trigger pack I had in the HK parts box and a choat stock with a 3d printed cheek piece seemed to work pretty well.
For a lower scope mount (should work with normal stock height) you might look at:
https://www.hkparts.net/shop/pc/HK-MP5-MP5K-Low-Profile-Mount-RMR-p18234.htm
It replaces the rear sight drum.
The triggers aren't good unless you happen to have to have a Psg1 pack hanging around in your parts box like I did. You might consider getting one from HK Parts that Bill Springfield has tune.
The mag changes do take some practice (particularly since my gun has a button mag release instead of a paddle) and I never got around to designing a magwell for it but they aren't impossible. I have some of the short mags ( I think they are 15 rounds) I need to try one of these day to see if that makes the reload better.
All in all if you are comfortable running one there's no reason you can't be competitive with it.
Breech Face Erosion
in General Gunsmithing
Posted
Do you mind posting the lot number (want to check my stock.