Terminology question

[BoneDigger]

Excuse my ignorance on this... If a person is shooting lets say "3 inch groups", does that mean three inches edge to edge or three inches in any direction from center? In other words, diameter or radius?

Todd

[DoubleGArchery]

Edge to edge.

[gonehuntin68]

I think it really depends on who you talk to but for me it would be edge to edge.

[hully1029]

edge to edge

[Zen Archery]

well poo... ive been getting it wrong my entire life!!!!

[JW]

If its bullets its measured center to center for obvious reasons. The different sizes of calibers. If it was edge to edge it would be awfully hard for a .308 Target Rifle to shoot a .250 group.

Arrows i reckon you can call it what you want.

[az2tx]

If its bullets its measured center to center for obvious reasons. The different sizes of calibers. If it was edge to edge it would be awfully hard for a .308 Target Rifle to shoot a .250 group.

Arrows i reckon you can call it what you want.

I think he means center of target, not center of hole

[JW]

I think he means center of target, not center of hole

Ten four. I thought he was meaning group size of bullets.

[super_dave]

Diameter

[JW]

Ok if he is talking about groups. They are measured center to center. Straight across.

[BoneDigger]

Yeah, talking about group size. Say six arrows in a group. So I gather it's diameter. That's what I suspected.

Todd

[PreacherT]

Diameter it is!

[Charlie6Delta]

Right, I say diameter. A group of arrows would fit in a 3" circle.

[BowDude]

radius is straight across the center... 3" radius, I think... but I could be FOS...
come to think of it... I go with diameter too... forget the radius remark.

[str8shooter]

Google it.

Update -

Follow this link to Hunter's Friend - Bottom of page - Range Testing. When they talk about range testing RTH bow packages, they clearly show it as Diameter, not radius.

http://www.huntersfriend.com/2012_Martin_Pantera_Magnum/single_cam_compound_bow_most_accurate.htm