Maxamundo
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Posts posted by Maxamundo
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1 hour ago, nickbfishn said:
Are you shooting factory ammo or reloading? What is your power factor?
Not sure what you mean... when I tested the SCS? or currently?
I've tried an extremely large amount of bullet weights and pf combos -
On 7/10/2017 at 5:57 PM, littlefish said:
Do you know which spring comes with the 9mm SCS?
it comes stock with the 110% 308 spring (red/yellow)
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I tried the JP SCS for 2 months modifying it in every configuration you could possibly think of. The best I ever got it was by running a light buffer spring with heaviest weights (all tungsten) and an additional 18lb wave spring UNDER the plastic cone piece at the bottom to reduce overall travel and add secondary buffering. You can see the results of that here:
But any configuration of the JP didn't even come CLOSE to the 9mm hydraulic buffer from blitzkrieg which I've been running for every major this year. -
It's also probably not a coincidence that while hiperfire 24Cs and similar are one of the most reliable and widely used triggers in PCCs, they have extremely high hammer force when you run them in 2lb configuration.
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Extremely common. I think a lot of people's triggers are oversprung for what's needed to set off small pistol primers which may lead to more stress on the firing pins. I've broken 3 JP firing pins, and the last one was at Safariland when I went click no bang off the buzzer. Had to dump my PCC and shoot the entire stage with handgun. Cost me a lot of match points.
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Has anyone done a test on the muzzle velocities with identical ammo through a stainless or cerakoted stretch 16 vs a melonited stretch 16?
Wondering if the supposed reduction of friction on the melonited versions yield any velocity increases. -
When you guys list your loads be sure to list your barrel length and barrel manufacturer too.
I had a Kaw 16" go faster than a JP 14.5" which was faster than a JP 16" with multiple different identical loads. -
Tried this today and thought it was pretty interesting. Excuse the graininess it was just before the sun went down.
I feel like removing the sights gave me a new perspective on every little part of my grip and how it interacts with the gun. Kind like closing your eyes and feeling your way around a room.
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welcome
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welcome
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looks like Foley is attracting new shooters after all with the updates!
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welcome
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>arms dealer
>lives in ukraine
you sound badass
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pics would be great!
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any pics of the open G35? sounds interesting
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just wanted to thank all the contributors to this thread
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Looks like fun stages with a lot of distance shots.
Your gun seems to be kicking a lot, what are the internals set up like? And what ammo?
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This is like the third time I've tried to post something and the server freezes and I try again then suddenly there's 2 posts. Can a mod please delete this one?
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I've already posted this some other places but I'm trying to get on BE a little more so thought I'd share.
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CM 13-13 Short Sprint Standards - 94.75%
CM 09-03 Oh No - 90.28%
CM 99-11 El Presidente - 95.11%
CM 99-24 Front Sight 2 - 99.73%
CM 06-05 Fluffy's Revenge 2 - 97.99%
CM 13-05 Tick Tock - 80.60% (not shown)
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37 minutes ago, busdriver02 said:
It's far from a clean thought, but I think it has a lot to do with distance the port is from the muzzle.
This is why I want to run a 16" barrel with rifle gas as an experiment. It's probably going to involve getting a 16.5" rifle gas barrel and cutting it down by a half inch.
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17 minutes ago, Garmil said:
The adjustable block is restricting the total amount of gas not reducing the pressure.
Less total gas in same volume = less pressure. How does that make sense?
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Kurt, what I'm struggling with is understanding what exactly the gas block is doing then? If you assume that the gas tube has 5000 more psi on a carbine system even if we constrict the gas port, then why did we constrict the gas port in the first place? Timing has to play an important role here, I'm trying to understand how it fits in.
Just speculating, but let's assume that the amount of time it takes for pressure to build up in the carrier is orders of magnitude smaller than the time it takes the carrier to move enough for the gas rings to pass the bleed off holes on the side of the carrier. This means that even with a gas block closed off to 99% or so on a carbine length gas system, you still reach a maximum pressure much higher then you will on a rifle system.
Working under this assumption, this would mean that in practice, putting an adjustable gas block on a carbine length gas system might only get you 10% of your "maximum recoil reduction" , where putting an adjustable gas block on a rifle system might let you get 50% of your "max reduction". This is simply because in practice, it would be impossible to turn off the carbine gas precisely enough to get the exact constriction that would be ideal (I'm talking like theoretically maybe 1/100th of a turn of the gas adjustment screw from completely off).
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Hmm... I thought those 3 statements I made were pretty solid, can you go into more detail on why you don't agree with them? Really curious.
I disagree with you that the final BCG velocity is the same simply because it stops at the same spot. By final velocity do you mean initial velocity (immediately after unlocking)? Otherwise the velocity would be zero at the compressed part of the cycle. It's tricky because I'm not sure how the time force is applied to the bolt carrier by the gas system changes depending on gas system length. For example is a carbine length gas more of a "hit" on the carrier where the rifle length is a "shove"? Or maybe vice versa because the dwell time determines how long pressure is high in the carrier?
What I think is true is that the final work done on the spring is the same, that is it has the same potential energy at the time when it's fully compressed and the BCG has velocity zero.
Which Recoil System? JP SCS Gen 2 vs MBX PCC Buffer System
in Pistol Caliber Carbine
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Blitzkrieg recommends using JP 308 springs.
They sell a "carbine kit" which is the 9mm hydraulic buffer with a JP 308 RIFLE spring.
They also sell a "pistol kit" which is the buffer with a JP 308 CARBINE spring.
Kind of annoying but it makes sense why they label it like that.
I have the entire set of JP springs (.223 carbine/rifle, 308 carbine/rifle, as well as the TTI Lightspeed spring which is an underpowered .223 carbine spring) that I used to do all my tests.
I currently use the 308 Carbine spring with the hydraulic buffer since it simply gives me the smallest groups and lowest time when I test on 25 yard bill drills.
EVERY GUN, AMMO TYPE, BARREL, MUZZLE DEVICE, SHOOTER'S STANCE, SHOOTER'S GRIP, ETC drastically affects how the gun will perform with different buffer systems. I'd recommend testing out different spring and travel length with your own setup and measure your times shooting small groups at distance.