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SEARAT1
15:51:11 Thu
Mar 25 2004

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Re: Magazine Spring Discussion????

I did the full magazine vs. almost empty magazine velocity test with the chronograph last night and......there is no difference in velocity....... I took 10 shots , alternating between a full magazine and a single BB loaded into the magazine and they all chronoed at about the same .......By the way, I noticed that the chamber in my magazine is elongating upwards as if the BB's were wearing out the metal on the inside when they are fired. There is even a very small burr forming around the top of the hole......Has anyone else noticed this? I have about 6,000 rounds through this magazine.

  
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SEARAT1
23:13:48 Wed
Mar 24 2004

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Re: Magazine Spring Discussion????

Yeah, I understand what you mean. I did read an article somewhere where they tested a Colt 1911 Government that had been fully loaded for 50 years, and after firing those rounds off and another hundred more after that, it never jammed. Just in case, I still swap magazines in my carry gun about every other week…… But back to your point; I noticed with my gun that sometimes when the magazine is close to empty, a BB will roll off the barrel. I also noticed several times that when pulling the magazine out after being empty or almost empty, a BB drops to the ground from the empty magazine well. Sometimes this BB gets lodged behind the magazine release plate and when I try to insert a fresh magazine, it won’t go in (I have to pull the release plate back while shaking the gun for that single BB to come out). I still don’t understand how that BB ends up wedged in there, but I have a theory of why BB’s roll off the barrel/drop out of the magazine well:
When the spring is compressed the least, as it would be the case with the last BB’s in the magazine, there is less force pushing those last BB’s up toward the top of the chamber. There may be some residual Co2 from the previous shot that pushes the following BB out of the magazine right after the shot (all of this happens very quickly) and that second BB, since there is not that much force holding it, either falls off the front of the barrel (if you happen to be pointing it down) or stays between the the magazine and the barrel and then falls to the ground when the magazine is taken out. I do not know if this or something similar is what is happening, but I do know that this only happens when my magazine is close to empty, so there is one reason for me to rather have a “stronger” spring than a weaker one.

As far as the spring compression affecting velocity, I would say probably not, but I am going to test some lead BB’s I just received with the chronograph and I will also run some full magazine vs almost

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olpistolpacker
21:12:43 Tue
Mar 23 2004

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Magazine Spring Discussion????

Believe me when I say I have not a clue about what I'm talking about but some of you may be able to answer a possible question. I'd love to see a post or two from you technologically savvy folks out there on this.

In years past, we were always instructed never to leave ammunition loaded to the gills in magazines. The thought was that over time the spring's return capability would be weakened and possibly lose its effectiveness. I've heard it expressed that modern metalurgy produces better springs, more immune to this "memory loss" and it isn't a problem to leave the mags full. (I usually still leave out a few rounds to this day out of habit and concern for the spring.

Now, the Drozd magazine spring is pretty stout and crams 30 + BB's up and snug in position for that precious little blast of CO2 gas to send them barreling toward the target. Does it seem remotely possible the spring might slightly hinder higher velocities holding it in battery at the top of the mag so tightly?

My question is, would it hurt to just leave the magazine filled with BB's to possibly weaken the spring just a tad...deliberately? Thus, the gas wouldn't have so much tension to overcome therefore increasing the velocity of the escapee down the barrel?

Any ideas on that? Was it clear enough what I'm trying to say? Please feel free to shoot .177 holes in my thoughts here. I'm curious.:rolleyes:



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