Quote:
Originally Posted by john3302
I know, also wrapping solder around the piston may make it too tight in the cylinder causing other issues. Not sure if that is the best solution.
I went with a AA m150 spring and the fps was consistently 503 to 505.
I'm leaving it cocked over night and hope to lose 10 to 15 fps once worn in for a few weeks. If not, I will cut a coil.
Just finished my first VSR-10 upgrade.
It was so hard to get the stock piston out of the stock cylinder and afterwards I could not fit the Action Army piston in the stock cylinder so I had to buy a AA cylinder. Then the stock bolt cap would not fit on the AA cylinder, so I had to do a bunch of fine grinding and sanding to make it fit.
I tested the rifle and the range and accuracy were excellent.Then it started to slam fire after 40 shots. I took it apart and found one of the cylinder guide rings had broken, probabaly earlier on due to the stock cylinder being out of spec. Going to make a new guide ring today using UHMW tape.
Yes, I have two mechanics who work for me and on numerous times I have seen them messing with stripped nuts and bolts and cutting and heating them etc.
Upgrades
Bar-10
Action Army hop up
AA 6.01 inner barrel
Maple Leaf 70 degree bucking
Barrel spacers made from masking tape
AA 90 degree trigger and piston set
AA Spring guide
AA M -150 spring
AA Teflon Cylinder
Shoots about 504 fps with new spring so need to wear spring in or cut it to reach most field limits in Canada.
Range and accuracy 76 to 86 meters with .4 bb's. It may shoot farther, but I lose sight of the trajectory after 86 meters.
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Update: Since I had everything apart I decided to cut the M-150 spring. I cut two coils off, sanded, heated , bent, and smoothed out. [See youtube video]
With just two coils cut it went from 504 fps to 468 fps. I may lose another 10 to 20 after worn in. My objective was 480 fps.
I recommend to anyone wanting to get in the 480 fps range to just cut one coil, or leave the gun cocked and take a couple hundred shots target practice before taking to a game. After wear it should be close to 480. If you field limits are higher than 480 fps, definitely do not cut. If you limits are in the 460-470 range, I would cut two coils. Anything lower I would just use a M-130 spring. This applies to Action Army springs which are easy to find in Canada. Using other manufacturers may yield different results.
After upgrades I took about 100 shots using .4 bb's. The gun has excellent accuracy 60-76 meters. I have not tested the range pass that yet. I lose sight of the trajectory after 76 meters. I will have to get someone to stand out there to test. There is little hop hitting 76 meters so I assume with a bit of hop, 90 meters plus should be obtainable.
Note: When you read or see videos on the Vsr-10 hitting 100 meters plus, it is usually in places like Europe where many areas have a 600 fps limit, so do not expect the same results in Canada where most fields have a 450 to 490 limit.