S&W 327 TRR8 BB revolver: Part 3
by B.B. Pelletier
Today is accuracy day for the 327 TRR8 BB revolver, and there’s an additional surprise in this report. I was glad to get another chance to shoot this interesting BB revolver that feels so good in my hands. It actually has made me curious about the .357 Magnum firearm. Ain’t that always the way?
I inserted a fresh CO2 cartridge for this session, and we know from the velocity test that there are at least 65 good shots from a cartridge. I’m talking about the best part of the power band, where no excuses for accuracy can be made. So, I could conceivably fire 10 cylinders (60 shots) and be safe. As it turned out, I didn’t even need to shoot that many.
Before the cartridge went in for piercing, it got a couple drops of Crosman Pellgunoil on the small, flat end. That ensures some of the oil will be blown through the firing valve, where trace oil will coat every surface, including all seals and valve seats. I want this gun to hold gas forever, and this is cheap insurance!
I used Daisy zinc-plated BBs, which have proven to be the most accurate steel BBs I’ve found. I was recently surprised to learn that Daisy imports these BBs from China in 55-gallon steel drums, but I do know that they then put every BB through a sorting process here in the U.S. before packaging. Whatever they’re doing is working, because these are the most accurate standard steel BBs I’ve seen. Only the Avanti Precision Ground Shot is more accurate — and you’ll probably only see the difference in a precision target gun like the Avanti Champion 499.
I shot the gun at 5 meters, which is the international distance for BB gun competition. I used a rested two-hand hold with my forearms resting on a sandbag. I don’t believe I can hold the gun any better than I held it for this test.
I had said earlier that I thought I’d be using the bright green fiberoptic sight for this test. This revolver has some of the brightest sights I’ve ever seen. But when I lit the target with the 500-watt lamp, I found that I had to use the conventional sight picture of the front post level with the rear notch and lined up at 6 o’clock on the black bull. The bright light on the target made the fiberoptic tubes of the front post and rear notch go black. It was as if this was a conventional set of sights. The sights were crisper than I originally thought when the target was lit this brightly, so everything worked out quite well.
The first group was shot single-action, which proved to be the most accurate way of shooting this revolver, as expected. I was so close to the target that I saw the first shot rip through the black bull. After that, I fell into a rythym and didn’t check the target again. I shot 12-shot groups, since the cylinder holds six loaded cartridges. When all 12 shots were fired, I checked the target through binoculars and couldn’t believe my eyes! It really appeared as if only 6 shots had been fired, because nine BBs all went into a single tiny hole. I doubt very much that I could repeat such a grouop if I tried 100 more times.
The first group was phenomenal! It appears that 9 of the 12 shots went into the tiny group at the lower right, though the hole just above it may have more than one shot. Entire group measures 0.685 inches between centers.
With the success of the first group under my belt, I thought it prudent to shoot a second group single-action, just in case the first one was a fluke. As it turned out, it was. But I could see this group as it formed, and it looked better than the first one from the firing line. I wasn’t until I examined it in the binoculars that the whole story became obvious.
The larger hole in the center of the bull was visible from the firing line as I shot, but the holes that aren’t in the main group were hidden until I looked through binoculars. This is a more representative 12-shot group and measures 0.858 inches between centers.
I’m satisfied that the 327 TRR8 is an accurate BB gun. I was very relieved that the fiberoptics didn’t have to be used, because look at the precision I got. Combat sights (fiberoptics) aren’t ever going to give you that kind of group.
Next, it was time to try my hand at double-action shooting. This is more difficult, because the longer, heavy trigger-pull causes the gun to move in the hand as the trigger is pulled.
The first 6 shots went so well that I thought I’d be recanting my position on double-action shooting, but the first shot from the second cylinder fired before I was ready and as a result it went wide. It was a called flier that I could see because I was concentrating on the front sight so intently.
The rest of the shots went into a fairly nice group, except that there was one high shot that I cannot account for. But when you’re pulling a double-action trigger and the gun shifts by just a few degrees of angle, it’s enough to throw you off target.
I used the quick-loading procedure that was reported in Part 2 of this report. That’s where you press the mouths of the 6 shells into a layer of BBs, and they all pop into the cartridges. While doing this, I noticed one time that two of the BBs had not popped into their cartridge all the way. That would cause them to have less friction than the other four BBs and that could cause a variation. In handloading firearm ammunition, it would be called neck tension — and it’s a vital component of accuracy.
This is what happened when the cartridges were not pressed down evenly on the layer of BBs. Two BBs are sticking out the top of the cartridges and will have less friction than the other four that are deeper. When they were pushed into the cartridge, a noticeable pop was felt.
The bottom line
This completes the test of the S&W 327 TRR8 BB revolver. We’ve seen how it works and all of its good features. It is a very well-made BB gun that looks like it will give good service for a long time. Accuracy is above average, and the power is well above the modest advertised velocity.