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Joined: Jan 2003
Posts: 2,833 Likes: 13
Sidelock
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OP
Sidelock
Joined: Jan 2003
Posts: 2,833 Likes: 13 |
What is the latest thinking on the best way to tune a set of bbls for target shooting?
Are the serious guys shooting over bored OUs?
Do they do anything to tweak the forcing cones?
What about the chokes? Are they longer, with a more gradual taper?
Just wondering.
Thanks for the help.
OWD
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Joined: Mar 2002
Posts: 3,104 Likes: 339
Sidelock
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Sidelock
Joined: Mar 2002
Posts: 3,104 Likes: 339 |
Not much overboring. The "pros" shoot whatever their sponsor mfg. gives them. Most are already .735-.740. Some may have a little forcing cone work done. Chokes and choke tubes vary from fixed mod/imp mod/light/full for guys like Wendell Cherry to whatever screw-in mfg sponsors them. All the rest of us are somewhere in between. I'm in AA and shoot 1500-2500 registedres targets/tournaments a year, and 6000-8000 practice targets a year, and I shoot a 32" DT-10 with Trulock chokes. No ports, no adj comb. A little added weight under the forend, it weighs 8lbs. 10 oz. Works for me. http://www.winscoreonline.com/view_resul...mp;class_id=AllJR
Be strong, be of good courage.
God bless America, long live the Republic.
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Joined: Jan 2002
Posts: 13,198 Likes: 1171
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,198 Likes: 1171 |
John's on the pulse of what the "serious guys" are shooting. I don't think many "tune" their guns, as far as over boring or forcing cones. The truth is that most of the top comp gun manufacturers, P guns, K guns, Beretta, CZ, have worked this out to the point that what wins shoots is skill. Every top shooter is shooting a gun capable of winning and none are exactly the same. Fact is that the top guns occasionally change gun sponsors, and still win. It has more to do with which company offers the sweetest deal than which gun is the "best".
Very few of the top guns today are habitual "choke changers". I do not mean that they never change chokes, some do when faced with a very "out of the box" presentation, such as a 10 yard fast rabbit, but many very seldom change chokes, preferring to shoot fairly tight chokes all the time. Do the pros really "believe" in the brand choke they are shooting? Sure they do. Confidence is a huge part of the game. But any precision manufactured choke tube will win. Hell, it doesn't even require screw chokes at all. I shoot a fixed .023" bottom and a .020" top in my MX-8, and do not feel handicapped at all. I think I hold my own pretty well, when you put in perspective the number of registered targets I shoot a year.
SRH
May God bless America and those who defend her.
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Joined: Mar 2005
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Sidelock
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Sidelock
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Joined: Jan 2003
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Sidelock
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Sidelock
Joined: Jan 2003
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Joined: Mar 2011
Posts: 2,987 Likes: 107
Sidelock
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Sidelock
Joined: Mar 2011
Posts: 2,987 Likes: 107 |
Stan, You must be shooting some spreaders then with those tight chokes at regular sporting? What brand spreaders do you like? Do you use that Perazzi for FITASC or do you go to tighter chokes?
Socialism is almost the worst.
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Joined: Feb 2002
Posts: 14,148 Likes: 204
Sidelock
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Sidelock
Joined: Feb 2002
Posts: 14,148 Likes: 204 |
Gregg, overbored barrels are not needed by any competition shooter. Nor are long forcing cones. The bottom line is how the pattern looks on the pattern board. What discipline are you considering participating in?
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Joined: Jan 2003
Posts: 2,833 Likes: 13
Sidelock
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OP
Sidelock
Joined: Jan 2003
Posts: 2,833 Likes: 13 |
8Bore-
I'm just interested, that's all - and your mention of the "...how the pattern looks on the pattern board..." is why.
I'm interested in learning the latest thinking on how to achieve the best patterns possible, and I figured competitive target shooters would know the most about this.
These days, does this have less to do with bbls and more to do with loads & shot cups?
Thanks,
OWD
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Joined: Mar 2011
Posts: 2,987 Likes: 107
Sidelock
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Sidelock
Joined: Mar 2011
Posts: 2,987 Likes: 107 |
OWD; Take a look at www.jimeyster.com and read all about it. He discusses forcing cones, choke angle and boring of barrels in a lot of detail. Much of this work was done when almost all 12 bores were .727". Now, manufacturers are producing their products at .740 because supposedly they pattern better and less perceived recoil. Kolar even made .750" barrels for awhile. The guys I know that have them really like them because perceived recoil is apparently very low. I've heard Kolar quit making the .750 because in order to keep weight down, the barrels were thin and dented easily. I haven't heard that from Rags at Kolar, but just shooters in the know. Frankly, if guns fit, I can't tell much difference in perceived recoil in .727 vs .737 or .740. I shot a .750 once and it still seemed to kick.
Socialism is almost the worst.
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Joined: Jan 2003
Posts: 2,833 Likes: 13
Sidelock
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Sidelock
Joined: Jan 2003
Posts: 2,833 Likes: 13 |
OK. Thanks. I will.
I don't understand how bigger bores could have an impact on recoil, though.
The bore size doesn't change the amount of force the load is pushing back with.
Of course, perceptions are all in the head!
OWD
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