The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > The Dave McCracken Memorial Shotgun Forum

Reply
 
Thread Tools
Old March 17, 2000, 11:47 AM   #1
Hueco
Senior Member
 
Join Date: December 7, 1999
Posts: 561
I have been shooting my dad's Mossy 500 for the past few months. We both shoot trap on the weekends, and so far we have put about 1000 rounds through it. We patterned it a few weeks after we got it. During patterning, we used Winchester AA Light Target 8 shot, and full, modified, and imp. cyl chokes. In all three, it shot a pattern of about 60% on top, 40% on bottom -- they only varied in core density. But now, it patters extremely high. We shot 35 yards (with the mid bead centered on the front bead, same as the first time we patterned), and the beads both centered on the target. But this time, it patterned very close to 90% on top, and 10% on bottom!! Ah! The only thing that was different from the first time we patterned was we used AA *heavy* target loads. What is going on?! You can imagine how frustrating this is... We do reload by the way. Can you recommend a way to somehow get the pattern lower?


Hueco
Hueco is offline  
Old March 17, 2000, 01:33 PM   #2
Al Thompson
Staff Alumnus
 
Join Date: May 2, 1999
Location: South Carolina
Posts: 3,605
The reason is pretty simple - the heavier load is slower and dwells in the barrel longer. The longer dwell time has the shot exiting the barrel when it is higher in it's recoil arc.

The same thing happens with rifles and pistols. Faster projectiles strike lower than heavy projos, relative to the point of aim.

I am under the impresion that trap shooters like higher patterns.. The guys in my club have their guns with the center of the pattern a foot above point of aim at 30 yards.

Giz
Al Thompson is offline  
Old March 17, 2000, 02:07 PM   #3
Hueco
Senior Member
 
Join Date: December 7, 1999
Posts: 561
I thought it could be the same thing that you mentioned. And yes, high is good -- but this is absurdly high! I'll load some lights and get them patterned -- that will fix it most likely. Thanks!!


Hueco
Hueco is offline  
Old March 17, 2000, 04:13 PM   #4
Art Eatman
Staff Lead
 
Join Date: November 13, 1998
Location: Terlingua, TX, USA
Posts: 22,540
Is the change affecting your hitting the clays? If so, you might consider a slip-on butt-pad.

Remember all our discussions about length of pull, and the effect on where you hit? A longer stock would make you shoot a bit lower, and thus lower the center of your pattern, would it not?

Something to consider...

Regards, Art
Art Eatman is offline  
Old March 17, 2000, 11:22 PM   #5
Hueco
Senior Member
 
Join Date: December 7, 1999
Posts: 561
Goodness yes it is affecting it! Otherwise I wouldn't mind much at all. Your solution is a good one Mr. Eatman -- in theory. Problem is, Dad is smaller than me. I actually do need a longer butt-stock. But he needs a shorter one. I will try tailering a few rounds up to shoot low. After that, I guess I might have to shim the butt-stock/reciever joint. Thanks!


Hueco
Hueco is offline  
Old March 19, 2000, 11:55 AM   #6
Dave McC
Staff In Memoriam
 
Join Date: October 13, 1999
Location: Columbia, Md, USA
Posts: 8,812
I'd suggest getting another shotgun,Hueco, instead of switching over the stock constantly.

FWIW, I'm a big guy,and I can shoot Daughter's 870 Youth model with its 12 1/2" pull OK, tho not quite as good as a standard stock.

On shimming, I've done it with folded aluminum foil. Remember, dropping the stock takes the recoil further from straight line, so you'll feel it a little more.

BTW, have you tried shooting trap with those high hitting loads to see if they break clays? Might be what you need.

Also, switching to larger beads will lower impact a bit, that may work better for you than shimming the stock.
Dave McC is offline  
Old March 24, 2000, 08:47 PM   #7
Hueco
Senior Member
 
Join Date: December 7, 1999
Posts: 561
Dave...it is already shooting high -- why would I try high-hitting loads? Anyway, I am not simply shooting under the bird about a barrel width -- works great. It's come out nicley in fact, I can see the target and where it is going. In high wind this is great because I can see the minor coarse variations! Today, I shot my best ever, I just held low. I see no reason now to get it to shoot a pattern lower.


Hueco

Also, we did get another one! An 835...we both love it!!

[This message has been edited by Hueco (edited March 24, 2000).]
Hueco is offline  
Old March 25, 2000, 07:55 AM   #8
Dave McC
Staff In Memoriam
 
Join Date: October 13, 1999
Location: Columbia, Md, USA
Posts: 8,812
I'm glad you're now happy with it, Hueco. Sometimes what seems to be a problem isn't.
Dave McC is offline  
Old March 25, 2000, 05:10 PM   #9
Hueco
Senior Member
 
Join Date: December 7, 1999
Posts: 561
Well, yes! Dad and I went back again today to shoot some more. We believe (have yet to pattern it though), the 835 might be shooting too high also -- shots that were held under do well. WE were joking that we wre most likely the ONLY two trap shooters who hold *under* the bird. But hey, just as long as they are breaking, I don't care where I have to hold!!


Hueco
Hueco is offline  
Old March 26, 2000, 01:11 PM   #10
Dave McC
Staff In Memoriam
 
Join Date: October 13, 1999
Location: Columbia, Md, USA
Posts: 8,812
Hueco,if you're busting an appropriate number of birds,patterning holds few surprises. patterning will enable a fine tune to be done tho.

Good luck and good shoooting...
Dave McC is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:05 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07233 seconds with 9 queries