Hm1000x efficiency

Airman,

My .22 caliber HM100xLRT is getting 168 shots @ 32 FPE, which I calculated to be an efficiency of 1.44 going from 235 bar to 100 bar. I need to lower my set-point to about 120/130 bar and I believe my efficiency will increase a whisker. I really want to get 100 very consistent shots .... and I'll be happy.

In .25 caliber, the SSG's aren't as effective, but I bet you could increase your shot count by 15/20 at your current power level. It cost me less than a few bucks to make one. IMO, it's a "No Brain-er" to at least try.

SSG devices do dramatically increase shot count but they require more spring tension to get the hammer up to speed, there comes point where it’s impractical to get extreme power with one.

For low to mid power you can increase the shot count and consistency by reducing the hammer weight even more.



Here is what i do






if you shorten your reg or fit a huma , this will increase plenum capacity so you can decrease reg pressure to eek out even more shots






Bb

Yes, the bolt that the ssg sits on takes up the space occupied by the inertia weight.

To set the length of the ssg, measure from the back of the block to the step in the inside of the hammer, (say 55.5mm) now set the length of the SSG to 0.1- 0.5mm (55.4 - 55.0) this give the optimal endfloat to eliminate hammer bounce.



Bb

Airman,

My .22 caliber HM100xLRT is getting 168 shots @ 32 FPE, which I calculated to be an efficiency of 1.44 going from 235 bar to 100 bar. I need to lower my set-point to about 120/130 bar and I believe my efficiency will increase a whisker. I really want to get 100 very consistent shots .... and I'll be happy.

In .25 caliber, the SSG's aren't as effective, but I bet you could increase your shot count by 15/20 at your current power level. It cost me less than a few bucks to make one. IMO, it's a "No Brain-er" to at least try

.

Click to expand...

This just hit me 168 shots??? HOLEY COW!!!

Got it made but having trouble getting to 840 fps think I'm running to much gap yet

Click to expand...

Yes, you need a heavier hammer spring as there is no assistance given to the hammer once the spring has stopped pushing.

Don’t give up on the ssg, you can get the power you are after. If you look at the example I make, the ssg is teethed to the adjuster cap, this has two benefits, it’s more consistent and all the energy from the spring goes into moving the hammer, it not wasted by moving the SSG.

End float is critical, 0.1 - .05mm., more hammer load is applied by shim washer mot by screwing in the hammer cap.


Don’t make the bottom top hat too tight a fit into the hammer, it needs to slide freely



Good luck

why would you want to your in the perfect accurscy speed and you have a good shot count.

Airman,

My .22 caliber HM100xLRT is getting 168 shots @ 32 FPE, which I calculated to be an efficiency of 1.44 going from 235 bar to 100 bar. I need to lower my set-point to about 120/130 bar and I believe my efficiency will increase a whisker. I really want to get 100 very consistent shots .... and I'll be happy.

In .25 caliber, the SSG's aren't as effective, but I bet you could increase your shot count by 15/20 at your current power level. It cost me less than a few bucks to make one. IMO, it's a "No Brain-er" to at least try

.

Click to expand...

This just hit me 168 shots??? HOLEY COW!!!

Click to expand...

Type o

Hey Guys,

Bb is right on the SSG spring.

The SSG's I've made are 2.125" from base to (tip) washer end. Power is changed by increasing spring diameter/tension within that 2.125" space. Minor adjustments can be made with the RVA within the SSG GAP, before it hits the hammer (which you don't want).

My 18.13 JSB SSG uses a less robust spring, while my 25.39 JSB SSG uses the OEM hammer spring. Their both 2.125" from base to tip, but create much different power levels within the same set-point.

Once I find my best pellets & slugs, optimal speeds and most efficient regulator pressure - I will simply make 3 different SSG's to achieve what need. My optimal regulator set-point will be where all 3 ammo types can achieve their goal (if possible).

I need to find 2" 10-32 cap screws for SSG use instead of phillips head screws (my local hardware store is out).