Slug Posted August 28, 2009 Report Share Posted August 28, 2009 I am slowly getting my head around patterns and shot sizes etc, as for chokes I would be grateful for a little more in depth help, according to the chart I am looking at cylinder is 0.726, is this a full unrestricted choke ie same as a barrel with fixed chokes ? the sizes then seem to decrease by a miniscule amount Skeet being 0.721, 1/4 0.716, 1/2 0.706 3/4 0.696 and so on, I take it this is thousands of an inch ? as there is 30 difference between cylinder and 3/4 ? Sorry if this sounds like a daft question but it is all a big learning curve.. Quote Link to comment Share on other sites More sharing options...
beretta Posted August 28, 2009 Report Share Posted August 28, 2009 each 1/4 choke you go down is usually .010" 10 thousandths of an inch. cylinder to full is usually .040" choking is regulated by the internal barrel diameter of your gun, some makes have different size bores. a gun with a . 720 bore will have full choke at .760. a gun with a .726 bore will have a full choke of .766 Quote Link to comment Share on other sites More sharing options...
mr salt Posted August 28, 2009 Report Share Posted August 28, 2009 I thought i understood chokes ! i just read berettas comment, i have thought hard about it ,and have worked out i have no idea quote as there is 30 difference between cylinder and 3/4 ? my god i wish i hadnt read this post. i only use two 1/2 and 3/4 cheers scott Quote Link to comment Share on other sites More sharing options...
BlaserF3 Posted August 28, 2009 Report Share Posted August 28, 2009 Here http://www.islandlakeshootingrange.com/shotgunfacts.htm is a nice easy to understand chart Quote Link to comment Share on other sites More sharing options...
Slug Posted August 28, 2009 Author Report Share Posted August 28, 2009 Another thing I don't understand as a newb, if the barrells are engineered to the same point of impact..Why do people choke top and bottom different ? For pairs i can appreciate as different zone, but does it matter for normal skeet or sporting ? Quote Link to comment Share on other sites More sharing options...
clayman Posted August 28, 2009 Report Share Posted August 28, 2009 While barrel measure give some info, the bottom line is the choking is what the gun does when its pattern plated. get some big paper or a tin plate and some whitewash, and go and pattern your gun. When you see the effect of differnt barrels / chokes at different ranges, not only do you have key info about how your gun performs, but you will also understand your gun and choking much better. Quote Link to comment Share on other sites More sharing options...
Chard Posted August 28, 2009 Report Share Posted August 28, 2009 Another thing I don't understand as a newb, if the barrells are engineered to the same point of impact..Why do people choke top and bottom different ? For pairs i can appreciate as different zone, but does it matter for normal skeet or sporting ? No Having a tighter choke in the top (second) barrel is a trap thing really, because if you need a second shot, the clay will be further away. They still say the ideal chokes for sporting are 1/4 in the bottom and 1/2 in the top. This makes no sense to me at all. In sporting clays, the second bird of a pair is just as likely to be closer than the first one. There's nothing to say it will be further away. For this reason, I shoot 1/2 choke in both barrels. The only problem with this of course, is that you have to go out and buy spare chokes, because they only give you one of each As you mentioned, skeet is another one where I don't see the need for a tighter choke in the second barrel Someone suggested to me once that we should be messing about switching barrels depending on the proximity or otherwise of the clays in a pair. I couldn't be ***** with that Quote Link to comment Share on other sites More sharing options...
Slug Posted August 28, 2009 Author Report Share Posted August 28, 2009 Thanks for the advice, my ground wants £1.50 for a cardboard pattern plate, I wonder if they will get the hump if I turn up with my own lol Quote Link to comment Share on other sites More sharing options...
neil smith Posted August 28, 2009 Report Share Posted August 28, 2009 While barrel measure give some info, the bottom line is the choking is what the gun does when its pattern plated. get some big paper or a tin plate and some whitewash, and go and pattern your gun. When you see the effect of differnt barrels / chokes at different ranges, not only do you have key info about how your gun performs, but you will also understand your gun and choking much better. +1 clayman As clayman says the bottom line is what the gun puts on the pattern plate ! Old cardboard boxes opened out also work good for this. You can talk fancy numbers all day long, the fact is every shotgun barrel is different & will throw different pattern sizes not just with different choke sizes but also with every different ammo brand & shot size. To get true feedback you need to pattern YOUR barrel with each choke YOU have, & with all the different ammo types you intend to use. That can be a huge task, instead I suggest you use only one choke & then learn the pattern size it gives at various ranges with your favorite ammo & then aim accordingly. You may be surprised to learn your favorite shotgun is not shooting quite where you thought it was after an hour spent with the pattern plate. N Quote Link to comment Share on other sites More sharing options...
Slug Posted August 28, 2009 Author Report Share Posted August 28, 2009 all good advice I will take this onboard fellas thanks Quote Link to comment Share on other sites More sharing options...
mr salt Posted August 29, 2009 Report Share Posted August 29, 2009 neil smith Quote You can talk fancy numbers all day long, the fact is every shotgun barrel is different & will throw different pattern sizes not just with different choke sizes but also with every different ammo brand & shot size. The best advice i have ever read when it comes to chokes :yp: cheers scott Quote Link to comment Share on other sites More sharing options...
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