by Tom Gaylord
Writing as B.B. Pelletier

ASG CZ Shadow 2 Part 1
ASG CZ Shadow 2 Part 2
ASG CZ Shadow 2 Part 3
ASG CZ Shadow 2 Part 4
Sig Air M17 ProForce Part 1
Sig Air M17 ProForce Part 2
Sig Air M17 ProForce Part 3
Sig Air M17 ProForce Part 4
Sig Air M17 ProForce Part 5

This report covers:

  • ASG CZ 75 Shadow 2 first
  • The test
  • Game Face Maximum Precision 0.25-gram BBs
  • Trigger!
  • ASG 0.30-gram Blaster Devil
  • Umarex Elite Force Milsim Max 0.32-gram
  • Wearsoft Sniper Grade 0.36-gram
  • Swiss Arms ProGrade 0.36-gram
  • Discussion 1
  • On to the Sig Air M17 ProForce
  • Game Face Maximum Precision 0.25-gram BBs
  • ASG 0.30-gram Blaster Devil
  • Umarex Elite Force Milsim Max 0.32-gram
  • Wearsoft Sniper Grade 0.36-gram
  • Swiss Arms ProGrade 0.36-gram
  • Discussion 2
  • Summary

Today is a special report, done at the request of reader Michael. He wondered whether heavier airsoft BBs than I used in the final test of the Sig Air M17 ProForce airsoft pistol would be more accurate. Read what he said.

“I have always read that heavier Airsoft “BBs” are more accurate than lighter ones. One theory is that in order to be heavier, they are manufactured to have fewer and smaller gaps inside them. Theoretically, that would reduce imbalances in the sphere and make them spin and fly more true.

“Because this is a CO2 pistol, it should be able to launch .30g, .32g and .36g ammo without breaking a sweat. It would be very interesting to see how it shoots with, say, WE or Swiss Arms .36g “BBs.”

It was a good question and I thought I would give it a go. And then I remembered that I had tested two accurate airsoft pistols in 2019 — both the Sig ProForce M17 airsoft pistol and the ASG CZ 75 Shadow 2. If I was going to test Michael’s theory I should probably test both pistols. So I did, and today is the report. I have labeled all the links above so you can read the full report for each pistol.

ASG CZ 75 Shadow 2 first

The Shadow 2 was tested earlier in 2019 — May to July. I tested it with BBs weighing up to 0.26 grams. In today’s test I have five new BBs to test. They range from 0.25 grams to 0.36 grams. There are even heavier BBs but they will slow a gun down a lot, so I stopped at 0.36 grams.

The Shadow 2 is powered by CO2, so it’s fairly powerful. Its tactical rear sight adjusts for both windage and elevation, but I didn’t adjust it in this test. I also did not touch the adjustable Hop Up. This is just a test of the ammunition with the gun set at one single setting.

The test

I shot both pistols off a sandbag rest at 10 meters. My hands were resting on the bag — the gun never touched it. I found that to be the most accurate way to hold both pistols. And I am only shooting 5-shot groups today because of all the shooting there is to be done.

Game Face Maximum Precision 0.25-gram BBs

These BBs are from Crosman. They have a dark finish, are double polished and apparently not biodegradable. They are lighter than the 0.26-gram TSD Bio 180 BBs I tested earlier with the Shadow 2, which were also the most accurate. The Shadow 2 put 5 of those into 1.194-inches at 10 meters.

The Shadow didn’t like these BBs and put 5 into 3.808-inches at 10 meters. I didn’t use the dime for groups like this for obvious reasons.

Trigger!

I had forgotten just how sweet the Shadow 2 trigger is! All my pistol triggers should be as nice. It has a long first stage and a crisp stage two that’s incredibly light. It made the pistol a joy to shoot.

Shadow Gameface group
The Shadow 2 put five Game Face BBs into 3.808-inches at 10 meters.

ASG 0.30-gram Blaster Devil

The next BB tested was the ASG 0.30-gram Blaster Devil. They are white BBs that are also not biodegradable. The Shadow 2 liked them good enough to put 5 into 1.899-inches at 10 meters. That is better than the best target the pistol shot last year (1.954-inches).

Shadow Blaster Devil group
Now we’re talkin’! Five ASG 0.30-gram Blaster Devils went into 1.899-inches at 10 meters.

Umarex Elite Force Milsim Max 0.32-gram

Next to be tested were five Umarex Elite Force Milsim Max 0.32-gram BBs. They are white and they are biodegradable. But the Shadow 2 didn’t like them. I shot 5 but only got 4 holes on the target. It’s possible that two BBs went through the same hole but I cannot see that they did. The centers of the 4 holes are 4.34-inches apart.

Shadow Elite Force Milsim group
Only 4 BBs seem to have hit the target. Their centers are 4.34-inches apart.

Wearsoft Sniper Grade 0.36-gram

This is the one for the Shadow 2! Of the 5 BBs tested, this one was the most accurate. Five Wearsoft Sniper Grade 0.36-gram BBs landed in a group measuring 1.245-inches between centers. This is a BB I would spend time with, adjusting both the sights and the Hop Up. It’s a black BB that’s not biodegradeable. It comes in a 2000-round resealable bag rather than a bottle.

Shadow Wearsoft Sniper Grade group
The Shadow 2 put 5 Wearsoft Sniper Grade 0.36-gram BBs into 1.245-inches at 10 meters.

Swiss Arms ProGrade 0.36-gram

The last BB I tested was the Swiss Arms ProGrade 0.36-gram. It’s a black BB that’s not biodegradable. The Shadow 2 put 5 of them in 3.866-inches at 10 meters. Three of them are grouped nicely in the black, but the other two went high for some reason.

Shadow Swiss Arms group
Five Swiss Arms 0.36-gram BBs went into 3.866-inches at 10 meters.

Discussion 1

So, what’s the verdict. Well, Michael was right about heavier BBs being more accurate. But what I haven’t told you is how much drop there is. When you go heavier than 0.30-grams the BBs slow way down and I wouldn’t want to shoot many of them in a skirmish. As accurate as the Wearsoft 0.36-gram BB is, I think the ASG 0.30-gram Blaster Devil is the more suitable of the heavies because of the increased velocity over the Wearsoft.

Before I continue, have you noticed how many titles these airsoft BBs have in their names? Apparently the airsoft world is motivated by impressive names. Well, I have one for them — the Ubiquitous and Devastating Terminal Mega Blaster! I’ll take a quarter for that, please.

On to the Sig Air M17 ProForce

Now I moved to the Sig Air M17 ProForce pistol. I tested it in October and November, 2019. You may remember that this pistol is sold as a CO2 pistol but there is also a green gas magazine available separately. Sig Air made that magazine available to me to test, so that is the mag I used for today’s test. It was the more accurate of the two mags when I tested the pistol with lighter BBs last year, but after seeing today’s results I see that need to switch to the CO2 mag for a final test.

Game Face Maximum Precision 0.25-gram BBs

Where Game Face Maximum Precision 0.25-gram BBs weren’t so hot in the Shadow 2, they were actually the best in the M17 with the green gas mag. Five went into a group measuring 1.807-inches at 10 meters. In the last test of the M17 the most accurate BB grouped five in 0.80-inches. I was so impressed at the time that I shot a second five and got a 1.21-inch group. So today’s best isn’t up to what we saw before.

M17 Gameface group
The Sig M17 did best with the 0.25-gram Game Face 0.25 gram biodegradable BBs. I will put that down to the lighter weight of the BB because I’m running on green gas, though that wasn’t apparent until the end of the test. Five went into 1.807-inches at 10 meters.

ASG 0.30-gram Blaster Devil

Next up were the ASG 0.30-gram Blaster Devils. Only 4 hit the target paper and their centers are 1.999-inches apart. Not bad but still, it’s just 4 out of 5.

M17 Shadow Blaster group
Four of five ASG Blaster Devil BBs went into 1.999-inches at 10 meters.

Umarex Elite Force Milsim Max 0.32-gram

After the Blaster Devils the M17 shot 5 Elite Force Milsim Max 0.32-gram BBs into a group that measured 4.482-inches between centers at 10 meters. Obviously this is not the right BB for the M17 on green gas!

M17 Milsim Max group
The Sig ProForce M17 put 5 Milsim Max BBs into 4.482-inches at 10 meters.

Wearsoft Sniper Grade 0.36-gram

Now we are getting way too heavy for green gas. The time of flight became noticeably longer with the two 0.36-gram BBs and they dropped lower on the target, necessitating a sight hold at the top of the bull instead of 6 o’clock. Five BBs landed in a group measuring 2.936-inches between centers at 10 meters.

M17 Wearsoft Sniper Grade group
Five Wearsoft Sniper Grade BBs went into 2.936-inches at 10 meters.

Swiss Arms ProGrade 0.36-gram

The last BB I tested in the M17 with the green gas magazine was the Swiss Arms ProGrade 0.36-gram BB. Once again, these are too heavy for green gas, so I aimed at the top of the bull instead of the bottom. Five BBs went into 2.898-inches at 10 meters. But notice that four of the five are closer together at the bottom of the target. They are 1.656-inches between centers. Some of the group size could be attributed to how I was aiming. So, with the CO2 mag, this BB could be viable.

M17 Swiss Arms group
Five 0.36-gram Swiss Arms BBs went into 2.898-inches at 10 meters, but the centers of the bottom 4 are only 1.656-inches apart.

Discussion 2

I had to get through the entire test to realize that these heavy BBs were too heavy for green gas. This test had already taken so long that I decided to test the M17 on CO2 at a later date.

Summary

Michael was right about heavier BBs being accurate. But we must bear in mind that accuracy means little to a tactical airsoft player if his BBs drop too fast in flight. The solution has to be a BB that’s both accurate and also reasonable for engaging action targets.

We must also bear in mind that sidearms like these two pistols are not the primary weapons of a skirmisher. They are a backup to be used when reloading or attending to the long guns in some other way. You don’t need pinpoint accuracy by itself. You need the right combination of all things, with accuracy being important but not the only criterion.