Psyxologos Posted January 5, 2009 Report Share Posted January 5, 2009 Hi everyone. I was reading on a shooting magazine the other day (sorry, cannot remember which one it was) a review on Miroku MK70 o/u (I have one of those) and the guy writing the article said that, should he buy one of these guns himself, he would change the chokes with extended ones. I was just wondering what the reasons behind this might be. Anyone knowledgeable enough to help me? thanks! Quote Link to comment Share on other sites More sharing options...
Andy W Posted January 5, 2009 Report Share Posted January 5, 2009 The answer may or may not be here http://forums.pigeonwatch.co.uk/forums/ind...showtopic=75429 Quote Link to comment Share on other sites More sharing options...
clayman Posted January 5, 2009 Report Share Posted January 5, 2009 The only difference between and extended choke and a flush one will be that the taper on the longer choke is less severe, hopefully resulting in a slightly better pattern edge definition. The pattern quality improvement will be negligible in open chokes, but probably observable on a pattern plate with tight chokes, full and 3/4. This is the reason some wildfowling guns have extended choke tubes for full and 3/4, but flush for the rest. Minimal improvement if any on 1/2 and more open. Some extended chokes allow the opportunity to introduce extra facilities without barrel mods, ie wad strippers and muzzle flip ports. The pattern and handling improvements will be very small, and only relevant if you are seeking that one extra target to win a comp at the highest level. If you are a AAA clayshooter, that might give you one extra break in a 100, but if you are an average Joe you wont see any difference in your scores. Main reason to buy them is so you have a talking point back in the club house, and the pretty colours on the ends can make for great posing Quote Link to comment Share on other sites More sharing options...
pair away Posted January 5, 2009 Report Share Posted January 5, 2009 if i was buying a miroku sporter and wanted one with extended chokes , i would buy the mk38 as it comes with them already . and its around the same price as a mk70 . Quote Link to comment Share on other sites More sharing options...
Psyxologos Posted January 5, 2009 Author Report Share Posted January 5, 2009 Thanks everyone. Well, from what I read here, it does not seem I need extended chokes. The main reason I am asking is because I "think" I read in the magazine that extended chokes deal with steel shot better. Is this the case? Quote Link to comment Share on other sites More sharing options...
clayman Posted January 6, 2009 Report Share Posted January 6, 2009 If the choke is a tight one, as the pellets run through it they are compressed to some degree. This rolls lead pellets on the barrel edge slightly elliptical, and makes these fly out on the edge of the pattern to give a more ragged edge. Longer chokes with a less severe taper will lessen this effect and give a better edge to the pattern. The compression of lead is greatest with full choke, and least with cylinder. As steel does not compress, it gives better patterns regardless of choke, and as you will be unlikely to be using a tight choke with steel, there really is not going to be any discernible difference. If anything, I'd say that longer choke tubes ( whether exposed or not) are only going to improve lead patterns, and only in the tighter choke designations. Exposed chokes are really just a way of getting longer tubes associated with a gun that was choke bored for std shorter ones, but you can also get long flush tubes for some guns, and Teague makes long flush conversions if you feel the extra length will be beneficial. The main group that benefit from long tubes are going to be high calibre trap shooters O/T and D/T, where lead is used with full and 3/4 chokes. Quote Link to comment Share on other sites More sharing options...
Psyxologos Posted January 6, 2009 Author Report Share Posted January 6, 2009 If the choke is a tight one, as the pellets run through it they are compressed to some degree. This rolls lead pellets on the barrel edge slightly elliptical, and makes these fly out on the edge of the pattern to give a more ragged edge. Longer chokes with a less severe taper will lessen this effect and give a better edge to the pattern. The compression of lead is greatest with full choke, and least with cylinder. As steel does not compress, it gives better patterns regardless of choke, and as you will be unlikely to be using a tight choke with steel, there really is not going to be any discernible difference. If anything, I'd say that longer choke tubes ( whether exposed or not) are only going to improve lead patterns, and only in the tighter choke designations. Exposed chokes are really just a way of getting longer tubes associated with a gun that was choke bored for std shorter ones, but you can also get long flush tubes for some guns, and Teague makes long flush conversions if you feel the extra length will be beneficial. The main group that benefit from long tubes are going to be high calibre trap shooters O/T and D/T, where lead is used with full and 3/4 chokes. That was very helpful and clear. thanks a lot. Quote Link to comment Share on other sites More sharing options...
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