OldGobbler

OG Gear Store
Sum Toy
Dave Smith
Wood Haven
North Mountain Gear
North Mountain Gear
turkeys for tomorrow

News:

registration is free , easy and welcomed !!!

Main Menu

Bore and POA/POI ?

Started by SumToy, February 12, 2012, 12:24:53 PM

Previous topic - Next topic

SumToy

#15
 
Quote from: Reloader on February 13, 2012, 10:05:23 PM
Sure have Wes, the 28" 835 beats the same in an 870, Inv, and Inv+ bore by a large margin. Less drag, but it still seals up. At least that's what the wads show.



True but you over look what I talk about. Folks say less killing energy.   I know it show up with the buckshot SOME.   I know the big bore fall way off in the cold and walk around hot it cold.  

This what I looking to see if folks have noticed it or not.  I know that a gun will pattern different in the north then south. Indoors is different then outdoors.  On top of mountain differentthen on bottom.  This is what I am looking to fine tune on.  
I don't care what kind if choke it is I looking to get all I can out of a gun.  It one of them deals we may have pushed them to the limit but only one way to find out.  

I take everything I read and folks tell me and roll it around on the table.   It one of them deals folks point at choke or shell 1st thing when gun not shoot.   This just open the door for folks to keep a eye on other things also.  
Tell us just how dead do you want them to be and we will see if we can get that for you.
Building American made products with American made CNC's and Steel.  Keep all the service Men and Women that gave a LIFE for our FREEDOM a live when you buy American.  God Bless the USA


Reloader

Sumtoy,


The 835 is faster whether it is cold or hot out.  It also patterns better in either extreme.  The killing energy doesn't fall off even with buckshot in the big bore.  I've never experienced the walking you speak of and I don't feel it has anything to do with the bore size.

Have a good one,

loder

allaboutshooting

#17
Just a few of observations.

Air density effects more than just patterns. It also adversely effects penetration by putting more drag on the pellets.

Temperature effects the velocity of the shot not only because of the fact that the air has more density but powder burn can be adversely effected.

Drag, as has been noted, is also caused by "gunk" in the barrel. Any drag can effect performance. Clean barrels, by and large, shoot with more velocity.

Velocity and penetration are not always the "friend" of good patterns. Slower shot, coming from a clean barrel may pattern better than faster shot coming from that same clean barrel.

Observing wads from shells shot can tell you a lot about how they interact with the bore and the choke. The heat generated at setback effects the expansion of the wad more than atmospheric conditions.

Shells that have been held at very cold temperatures, such as those in goose pits and duck blinds or those left outside in hunting coats in cold weather, may lose a lot of energy. Think about that effect when combined with the steel shot used by many hunters for waterfowl. It means less energy at the target.

Big bores like those on the Mossberg overbored guns, the Invector+ barrels and the Pro-Bore from Remington barrels work very well to lessen the drag on wads.

The engineers at Olin/Winchester did work on the effects of atmospheric conditions on shotshells years ago and it remains the definitive study. It's an interesting read.

Thanks,
Clark
"If he's out of range, it just means he has another day and so do you."