Ladies and Germs,
In a year of testing I have accumulated 200+ targets, and multiple recovered bullets. The evidence is saying that coated bullets are more accurate from polygonal rifled barrels AND that the polygonal rifled barrels are easier on the coating. What I need is your help in either verifying or disproving this thought.
THIS IS NOT A HT VS PC VS WHATEVER THREAD
That being said I am asking that you post photos of your recovered bullets and you state the following:
what kind of rifling it was shot through: Polygonal or standard
Barrel Length
Firearm Model
Approx. velocity
GC or no GC
Type of coating
Leading or no leading
Accuracy
I'll start it off:
Polygonal rifling
3.77 in barrel
Glock 36
800 FPS
No GC
HI-TEK Super Coat
No leading
2.5-3 inch 14 shot groups at 20 yds
Attachment 101667Attachment 101668
Next:
Standard rifling
5 inch barrel
S&W 1026
1100 FPS
No GC
HI-TEK Super Coat
No leading
3-4 inch 18 shot groups at 25 yrds
Attachment 101669
Attachment 101670
Attachment 101672
Next:
Standard rifling
4 inch barrel
S&W model 28
900 FPS
No GC
HI-TEK Supercoat
No leading
3-4 inch groups at 25 yards
Attachment 101671
As you can see, the edges of the rifling on standard rifled barrels is cutting the coating. I have other bullets fired from glocks in different calibers that show the same as the Glock bullets posted here. I've never experienced any leading, but it is interesting indeed. I'm not sure what this means at this point, but I have (unfortunately) put up another drawing board to do some figuring.
So...without further ado...post em' up!!