cjm Posted November 16, 2010 Report Share Posted November 16, 2010 (edited) Hey guys, what sort of spread difference is there roughly between each choke size aT roughly 30-35 yards??? any help appreciated Edited November 16, 2010 by cjm Quote Link to comment Share on other sites More sharing options...
CharlieT Posted November 16, 2010 Report Share Posted November 16, 2010 Have a look at this I just Googled http://www.60secondsportsman.com/a/shotgun_choke_chart.shtml Quote Link to comment Share on other sites More sharing options...
sitsinhedges Posted November 16, 2010 Report Share Posted November 16, 2010 The only real answer is to pattern your gun and your cartridge otherwise it's all just speculation. Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted November 16, 2010 Report Share Posted November 16, 2010 The only real answer is to pattern your gun and your cartridge otherwise it's all just speculation. +1 speculating is just speculation. i`ve actually adjusted my setup as follows. -any steel clay load, and some other steel loads (cylinder choke) -28g lead 1/2 and 3/4, 32g lead the same. up to full choke with everything else. Quote Link to comment Share on other sites More sharing options...
clayman Posted November 18, 2010 Report Share Posted November 18, 2010 (edited) The charts are good and do give a guide - but the notches on a choke are only an approximation of what you will get on a pattern plate. Manufacturing tolerances, barrel wear, forcing cone type, cartridge choice, antinomy %, wad type etc will all vary the pattern to some degree - so as suggested the only way to know what your gun does with your chokes is to go out and pattern it on a pattern plate. Get some wallpaper, stick it onto some strawbales or other safe background and shoot your usual cartridges at a cross in the sheet. Repeat for each choke, and do it at a couple of different ranges, 20yds, 30yds etc. Choking is defined by the number of pellets in a 30" diameter circle at different distances, so you can determine exactly what choke is achieved at the different ranges with your chokes by doing a pellet count in the circle. The exercise will also give you good info on your gun fit, point of aim, and may even reveal a master eye problem if you are shooting off to the side of the plate. Doing the pattern plate exercise is hugely informative and well worth the trouble Edited November 18, 2010 by clayman Quote Link to comment Share on other sites More sharing options...
Dougy Posted November 18, 2010 Report Share Posted November 18, 2010 best advice is to get out and check using some wallpaper set up on some board or something Quote Link to comment Share on other sites More sharing options...
Highlander Posted November 18, 2010 Report Share Posted November 18, 2010 The only real answer is to pattern your gun and your cartridge otherwise it's all just speculation. even cartridges from the same batch will pattern differently to some extent. Find a cartridge that suits your gun and stick with it. Quote Link to comment Share on other sites More sharing options...
wymberley Posted November 18, 2010 Report Share Posted November 18, 2010 even cartridges from the same batch will pattern differently to some extent. Find a cartridge that suits your gun and stick with it. Hi, And because H's first sentence is perfectly true, it is necessary to fire 6 shots (for scientific purposes the minimum deemed necessary is 10) from each barrel and calculate the average if a reasonably accurate answer is required. Cheers Quote Link to comment Share on other sites More sharing options...
humperdingle Posted November 18, 2010 Report Share Posted November 18, 2010 Hey guys, what sort of spread difference is there roughly between each choke size aT roughly 30-35 yards??? any help appreciated The guy just wants a rough estimate... CJM, if you PM me your email address, i'll send you a very good PDF file on shot sizes, densities etc over given ranges. Quote Link to comment Share on other sites More sharing options...
wymberley Posted November 18, 2010 Report Share Posted November 18, 2010 The guy just wants a rough estimate... CJM, if you PM me your email address, i'll send you a very good PDF file on shot sizes, densities etc over given ranges. Oh, yeah, missed the rough bit. Answer is much simpler now: Fire a couple of shots at some road signs! Quote Link to comment Share on other sites More sharing options...
humperdingle Posted November 18, 2010 Report Share Posted November 18, 2010 Oh, yeah, missed the rough bit. Answer is much simpler now: Fire a couple of shots at some road signs! If it floats your vessel. To the two guys that PM'd me for the file... It's been sent. Quote Link to comment Share on other sites More sharing options...
cjm Posted November 18, 2010 Author Report Share Posted November 18, 2010 Cheers i'll get a look at it now. Quote Link to comment Share on other sites More sharing options...
Dekers Posted November 18, 2010 Report Share Posted November 18, 2010 Eley used to do some charts of choke and cartridge and spread at different distances on their website, I suspect they still do...been shown in their diaries for years! Quote Link to comment Share on other sites More sharing options...
wymberley Posted November 18, 2010 Report Share Posted November 18, 2010 The guy just wants a rough estimate... CJM, if you PM me your email address, i'll send you a very good PDF file on shot sizes, densities etc over given ranges. Sorry, had to rush off. The point that Highlander made is, as said, accurate. It is not unknown during a pattern test for 6 shots from the same box to produce a variation in excess of 20% and I've experienced even greater. This 20% stretches from IC to Full, for example. Plucking one shot at random is pushing the pattern density accuracy assessment rating of even "rough" to the extreme. Unless you train to peak every 4 years, a missed clay is of no consequence but using a woefully inaccurate cartridge performance test should have no place in live quarry shooting. Cheers Quote Link to comment Share on other sites More sharing options...
originalgeezer Posted November 18, 2010 Report Share Posted November 18, 2010 Just for information, I patterned both my Beretta 686 gold e and my Benelli Supersort: both with 1/4 choke The results very different as the Benelli gave a much tighter pattern than the Beretta. Only way to really know is on the pattern board. Quote Link to comment Share on other sites More sharing options...
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