I was bored the other day (can happen occcassionaly when you retire) so I decided to buy some gun juice and try it. For those who haven't heard about it, it is a suspension of particles in oil that is supposed to impregnate itself in metal and reduce friction and also protect it. It's on the net.

It is supposed to raise velocity and improve accuracy in guns by up to 1/3. Yea too good to be true so I
paid the $18 dollars and bought 4 oz.

The test results say yes and maybe but the interesting thing is the results I got for the 17 ammo before and after the gun juice treatment.

Rifle Weatherby .17 (made by Anschutz)

5 shot strings for an average velocity 10' from the muzzle 88 deg
Chrony gave expected readings for a .22 lr (5 shots 1240 avg)
and .22 mag using OSSI Coyote Killer (5 shots 2265avg)

Here are the .17 results before and after the gun juice and please tell me I'm not crazy because I have read most of the articles on the .17 also.

velocity before gun juice ----- Velocity after gun juice

Remington 5 shot avg 2678 ----- 2800 Honest!
Winchester 5 shot avg 2751 (no that's not a misprint)----- 2750
CCI 20 gr 5 shot avg 2605 not a misprint either ------ 2600
CCI 17 gr No data 2780

Here are some limited .22 mag results from a 22" barrel

OSSI Coyote killer 2265 ------ 2335
Remington 33g No data ------- 2160
Remington 40 g PSP No Data ------ 2001
Winchester 40 gr HP No data ------ 1975
Winchester WRF 1330 ------ 1355


This a .22mag result from a 6" colt

OSSI Coyote Killer 1670 ------ 1755


I haven't run a meaningful accuracy test of any kind yet but will report back.

Looks like the gun juice does up velocity in most cases but how am I getting these crazy velocities for the 17???????

Lert me know what you guys think.


Kimon

I disagree with your conclusion. Based on the data, the ‘Gun Juice’ dose not improve velocity. 2 of 6 loads lost velocity, though not enough to be of any meaning. 2 of 6 loads gained so little that it is inconclusive (less than 4% increases, I see 4% changes in mean velocity between ammo lot numbers at times) and 2 loads gained between 4% and 6% increases in velocity which is marginal compared to the 33% they suggest possible. Loads without data on one side or the other are meaningless because there is no comparison to be made. Try lapping the barrel, you will get better results from that than the ‘Gun Juice’ has given you.

On a side note, ya that sounds about right for a .17HMR, I commonly get velocities north of 2500 out of mine.

That's interesting because all the write-ups on the 17 show it higher than factory but only by about 75-100fps not the 200fps that I got.

I understand your point but you are forgetting that all those loads in the 22 mag ( like the 2 remington loads and the winchester) that didn't have a baseline but were higher than the factory figures by about 4-5% and I can't remember a .22 mag load that was that clocked over the factory claim out of a 22" barrel. By the way the 33% number refers to an improvement in accuracy not velocity and my 22 mag barrel has been lapped and thru the cryo process already.

In addition, 4 to 5% is as much or more than the typical increase gotten by going to an improved version of most center fire callibers so if it holds up, I would consider it significant. It is a far cheaper way to get 100 to 150 fps in a center fire than going to an improved cartrige (I have a few).

I will try it in some center fire rifles and see.


KTG

I have clipped 2800 fps with my Ruger 17HMR on several occasions. It depends on the Lot and the temps. I was shooting between 90 and 100 degrees with mine and ran five consecutive shots over 2700 in one string. You can increase velocity (temporarily) with plain gun oil wiped sparingly through the bore... But it only lasts long enough to screw up the consistency of the velocity string you are measuring.~AMMOe

Even if the load is slinging faster than the listed speed on the box, if there is no pre-data, the post data is meaningless. It could just be a box that shoots slightly fast. Having said that, you really can’t extrapolate 5% in a small rimfire to 5% in a larger centerfire, in the same way that you can’t say adding X grains of powder B will affect all calibers the same. The resin you can’t extrapolate in this manner is that the coefficient of friction times the normal force is varies widely with barrel design, caliber, twist rate, rifling depth, ext.

Having said that, it would be interesting to see a cyclic rate of determination. IE a list of velocities for 1 batch of identical ammo, starting with 5 rounds pre treat, than treat, 5 rounds, swab clean, 5 rounds, swab clean, 5 rounds ext. List each shots velocity for the full 50 rounds of the box and then list averages for each 5 round group. That would be the real tell tail for weather it lasts or not. It would also be interesting to see it compared group size, using a fixed rest obviously. The other interesting comparison would be ‘Gun Juice’ Vs molly coating your bullets, but that would haft to be done in a centerfire rifle by some one that can hand load. And the final test that would be worth doing would be shoot 5 rounds with treatment and then clean the gun completely and shoot another 5 rounds to see what happens.

The thing that makes me skeptical on 33% increase in accuracy is that reducing my 3 round group size from some of my firearms would reduce the diameter to less than the diameter of the bullet it’s self. I would also haft to point out that accuracy has more to do with barrel harmonics that barrel friction. I suppose in a rifle that performs poorly in the first place it may be a significant improvement but in a good rifle it will probably have little effect.

FWIW, I'm getting similar higher than factory quoted velocities with that ammo in a 17" semi-auto. I don't recall chronographing a 40g that eclipsed 2000fps but they are regularly a bit above factory numbers.

also, wait about 300 rounds or more to find out. usually with these products, they begin to wear out, after 300 rounds, maybe as much as 500. unless the product does not make a coating or layer, but actually COMBINES, with the metal, to make a new metallugical compound, then this stuff will work itself out after use. Also, it is really a pressure deal, so you may see a rise at first, then the pressure starts to drop off, as it works some of itself out a bit. then you get a pressure increase, and the speed, correspodningly, goes down a bit, then back up. then finally back down to where it started, as it wears out. the stuff that actually
does the combining, never gets to that last place, and the speed starts up, drops down a bit, then comes back up, and stays
that way!!!

Maybe I should add some of this to my gas tank.

ShooterJohn ,Funny you should mention your car engine.I have treated both my car engine(Subaru) and my truck engine Dodge Hemi with their engine treatment.I also have treated ALL my fire arms including my pistols with GUN Juice and have increased velocities from 21 fps to 83 fps average in a series of chamberings from 17 HMR to a 30-338 rifles and 22 rim fire pistol to my 44 mag..For me the stuff really works although my original intention was to keep barrel and chamber ware to as little loss as possible.