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PostPosted: Sat Oct 27, 2018 4:02 pm 
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Joined: Thu Jun 28, 2018 9:31 am
Posts: 35
Location: CALGARY
Gamo Red Fire vz Polymag 22 cal.It would seem the Gamo is a little more superior,penetration etc.Anybody using them in the fx streamline magazine.I watched a video on the comparison,of the 2.But he only did it at 7 yds.Anyone comment on downrange abilities.thanks


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PostPosted: Sat Oct 27, 2018 9:29 pm 
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Location: Winnipeg, Canada
Haven't tried the redfire in.22. The .177's I tried had much trouble retaining the polymer tips- over 35% of them lost.
The ones that held together shot okay, but don't hold anything over the Predator.

Shot a sub caliber 5 shot group at 20 yds with the .22 predator polymags last week in a new rifle...

-D.S.

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PostPosted: Sat Oct 27, 2018 9:50 pm 
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Didn't use the red fire, but I used Crosman red flight Powershot and Poly-Mag.

I like the Crosman better as it's lead free and have much better penetration power than the Poly-Mag

And Poly-Mag actually is a hollow point pellet, I don't see it has good penetration power...

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PostPosted: Sun Oct 28, 2018 3:35 am 
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I would really hesitate to call the polymag Predator a hollow point. The polymer tip on them negates that idea. Proper terminology would expanding point.

I suppose it really depends on what you want to penetrate. I have yet to recover a predator from any game I've taken with it in either .177 or .22. They fully penetrate both grouse and rabbits with equal aplomb. The difference over standard pointed lead pellets I've seen is a slightly larger exit channel, and that's about it. The value for me in the Predator is the accuracy. I doubt there's much more that can be done to improve terminal ballistics for projectiles out of the below subsonic velocities air guns operate at. The expanding copper star slugs mentioned here last week are something new that may be worth looking at- if they reach commercial production...

-D.S.

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PostPosted: Sun Oct 28, 2018 10:03 am 
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Yeah, Doc you raised a good point!

As I am not a hunter, so my 'penetration' ideas are only based on the plinking soup test ~

So we need to consider where to use the pellet and find a better fit...

So, in my experience, the Poly-Mag will always get one side through, then stopped at the other side as the polymer tip got damaged in the first 'wall', and the lead hollow point without the tip can't get through the second wall... And I don't think the skin/fat/muscle would break the polymer tip... So Doc's experience is conceivable~

And the Crosman will always went through both side and left a bigger exit hole on the second wall...

I also tried the RWS Green Hyper velocity leed free. Which usually left the green skirt outside of the first wall of the soup can, but the alloy head went through both wall and left a much smaller hole then the Crosman... Interesting....

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HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
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PostPosted: Sun Oct 28, 2018 11:10 am 
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Nice weekend and the lovely wife brought the kids out to shoppinig and I can do some fresh test on the fresh done soup can... 3 brothers on the line...
Attachment:
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Polymag at first...
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Poly in.jpg
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Attachment:
Poly out.jpg
Poly out.jpg [ 302.54 KiB | Viewed 413 times ]

It made the biggest in hole, but couldn't go through the second wall...

_________________
Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


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PostPosted: Sun Oct 28, 2018 11:14 am 
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The tip was damaged and the lead based hollow point collapsed.
Attachment:
20181028_114019~01.jpg
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Second one is the Crosman...
Went through both walls easily as I hardly see the can shakes while being hit... and it made the biggest ugly out hole...
Attachment:
Crosman in-out.jpg
Crosman in-out.jpg [ 385.01 KiB | Viewed 413 times ]


Attachment:
Crosman out.jpg
Crosman out.jpg [ 426.49 KiB | Viewed 413 times ]

_________________
Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


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PostPosted: Sun Oct 28, 2018 11:17 am 
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The third one is the RWS. This time the green skirt wasn't taken off and stuck on the can, but bounced back after taken off and fell on the ground... And it made the smallest out hole on the second wall.

Attachment:
RWS in-out.jpg
RWS in-out.jpg [ 280.21 KiB | Viewed 412 times ]


Attachment:
Poly in - RWS out.jpg
Poly in - RWS out.jpg [ 558.28 KiB | Viewed 412 times ]

_________________
Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


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PostPosted: Sun Oct 28, 2018 1:28 pm 
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Posts: 5883
Location: P.G. B.C.
The polymags give me excellent accuracy in all three calibres - .177, .22 and .25. In .25, they are a bit light, at 26gr. (iirc), but shoot well indeed.
The heavier Barracuda HP's and RN's at 33 to 34gr. are better for longer range, over 50yards, in my .25.
In .25 cal. Bob Sterne's cast 51gr. FNBT design seems best of all and has a BC of approximately .100.
The difference in sound hitting the steel plates in the indoor range, is remarkable, between the various calibres and pellet/bullet styles. That 51gr. bullet REALLY rings the plates.

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Daryl


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PostPosted: Sun Oct 28, 2018 11:04 pm 
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Location: Winnipeg, Canada
I got a little penetration examination done of my own, today.

Image

H&N tin at 20 yds with the little Nikon's lens fully extended.

Image

Entry holes.

Smallest hole at top is the 16 gr polymag predator. The one at bottom is H&N Barracuda 21.3 gr. (camera inverted the photo for some reason)
Center right is Air Arms 16 gr Diablo dome. It did not keyhole on entry- it actually hit a nail in the backing block and bounced back out.

Image

Exit holes. (camera did not invert this one)

Barracuda at top.

Air Arms at bottom left, and Predator at right.

Image

The backing block. Barracuda at left, and Predator Polymag at right. Splash at far right is the Air Arms hitting a finishing nail, and bouncing back.

Barracuda at 617.6 fps

Polymag and Air Arms both at 640 fps.

Yep's sample looks to be below 500 fps. I have no problem with the Libby's/Heinz bean cans at 20 yds with the Predator- in one side, and out the other.

It was cold to be doing this today- about 2 C. Still, a cold day shooting is better than a warm day of work....

-D.S.

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"Ain't no half-way"
-S.R.V.

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PostPosted: Mon Oct 29, 2018 1:52 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
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Location: P.G. B.C.
The .177 Predator Polymags exited Columbia Ground Squirrel heads and chests at 55 yards.

The actual barrel length on this rifle is only some 9" in length.

from my .177 HW97KT. MV - 890fps. 14fpe at the muzzle.


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HW97177andrats002_zpsaabd7448.jpg [ 325.15 KiB | Viewed 324 times ]

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Daryl
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PostPosted: Mon Oct 29, 2018 2:29 pm 
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Location: GTA, ON
Yeah, I heard that the Poly-Mag actually is very accurate at the similar construction pellets.

I doubt my favor Crosman red powershot can have this accuracy to 50 yards far...

I think the lead based / skirt pellets have this advantage when it fly through the rifling, the skirt will be cut accordingly to the rifling well and keep a good shape until it hit the target...

Sent from my LG cellphone

_________________
Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


Top
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