What is the true story with the Perazzi choke marking system? I was talking to somebody who has an MX8 almost the same as my own and of similar age serial numbers within a few hundred of each other. His barrels are marked exactly the same as mine one dot top and three for the bottom I said so yours is a half and full as well and he said oh no it is 3/4 and full. I said that three dots was normally marked for half choke he then said they, Perazzi, are notorious for marking their barrels wrongly and assured me they are 3/4 and said mine are probably the same. Would / do Perazzi really make errors like that ? I have my doubts but he is adamant they are well known for having done it in the past.
Perazzi barrels and choke markings
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Wonko the Sane
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As you can see, there is a lotta slop in the dot system. The only way you really know what you have is to measure it. But the truth is that the pattern board is the only real way to tell for sure. But your friend may be right tho I've never seen a Perazzi barrel that did not meet the range in the chart. Just looking at the dots is a pretty dangerous way to decide what you have if that is going to make a difference to you.
FWIW I get just fine target breaks from a 72cm barrel with a #5 factory screw-in (0.020+/-) from the 27yd line. A 70cm barrel stamped */*** has 0.032 in the first barrel and will break targets way further out than I can consistently hit them.
I just use the dot system as a guide to tell me whether or not a barrel has been screwed with when I measure it.
Relax, John.
reved: Charlie
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OK the fire brigade are just coming to help me get my finger out of my barrels!!!! :laugh:
ips
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Ermmmmm....
I thought i would throw into the mix the tuning of barrels on the old Perazzis v new Perazzis.
A discussion i was having recently and was told.....
Old were constructed / tuned for 36 grms and throw patterns suitable for 36grms
New ...for 24 grms.
Hence some of mine are awesome with 36grm and not with 24 grms.....and vice versa.
Still deciding if it is a myth.... :wink: but i know from the results that it is not a myth.
Discuss......
I thought i would throw into the mix the tuning of barrels on the old Perazzis v new Perazzis.
A discussion i was having recently and was told.....
Old were constructed / tuned for 36 grms and throw patterns suitable for 36grms
New ...for 24 grms.
Hence some of mine are awesome with 36grm and not with 24 grms.....and vice versa.
Still deciding if it is a myth.... :wink: but i know from the results that it is not a myth.
Discuss......
ips
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I had a theory about 3 yrs ago that modern italian barrels patterned 24g better and had discussion with a few trap shooters of note, most agreed and one perazzi efficianado (poss spelling error) confirmed definitevly that he knew for a fact that this was the case and had the info from the horses mouth. Since the 24g trap rule all b and p barells were made specifically for 24g, apparently. There is no doubt in my mind that both my 10s shoot 24 better but still feel like I am missing 4g when shooting abt.
Wonko the Sane
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FWIW I'm going with myth. I've had or currently have barrels from 1968 to 1992. Unmodified factory stock barrels. Measured and shot them all. Stamped bore diameters of 18.4mm on maybe 20+barrels thru time measure so consistently 0.724"+/-0.001 that it is almost bankable. Choke measurements hit in the dot ranges. I've yet to put any load thru any of them that didn't pattern better than what would be expected from the stamps. The ones that have seen 36gm LOVE 36gms. Near all have seen 24gm and LOVE 24gm. Patterns like the face of a hammer!
Maybe I've just be caught in a sampling error with what I've seen but folks whose experiences I trust have always been the same.
All bets are off on any barrel that has been "fixed up" by anyone.
Charlie
Does anyone under 45 years of age know what a micrometer is Pete?
Les you don't look a day over 40 so!
I make and sell a measuring thingy that has a clock / dial thingy on it and a twiddly thing that expands (makes bigger) a thingy on the other end that goes inside the tube thing that you screw your chokes into. The clock / dially thing moves when you turn the knobbly thing and the reading on the clock doesn't tell time, pressure, or temperature. But with a chalk and slate and simple arithmetic it tells you hole size and how much them screwy in things are blocking the hole.
My next post will explain what Arithmetic is.
Les you don't look a day over 40 so!
I make and sell a measuring thingy that has a clock / dial thingy on it and a twiddly thing that expands (makes bigger) a thingy on the other end that goes inside the tube thing that you screw your chokes into. The clock / dially thing moves when you turn the knobbly thing and the reading on the clock doesn't tell time, pressure, or temperature. But with a chalk and slate and simple arithmetic it tells you hole size and how much them screwy in things are blocking the hole.
My next post will explain what Arithmetic is.
ips
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or you could use my finger thing technique, same result but screwy inny outy thing is not required neither is any form of math.
See Charlie I am inclined to go with what you have said and I told the guy straight out that I thought that Perazzi would not mark something wrongly. Anyway we agreed to disagree on that and that is why I asked the question. I have no idea if he has measured his chokes but what he may be doing is looking at that chart that Les posted and come to the conclusion that three dots is IMOD... which is the max the chart will give that mark rather than half... having said that the chart from what I can see also says it could be 1/4 what till I tell him that!
what till I tell him that!
ips
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Beretta seem to use the good old fashioned method of telling you without riddles what finger measurement your tube things are.
but I stress I have no issues with p or any other make or style of gun etc etc and I like all disciplines snd everyone. Oh and no humour was used in this or any other recent post.
just saying to avoid abuse, many thanks
but I stress I have no issues with p or any other make or style of gun etc etc and I like all disciplines snd everyone. Oh and no humour was used in this or any other recent post.
just saying to avoid abuse, many thanks
Well flattery will get you everywhere Pete, I just wish I did look like a 40 year old mate. I once had a lovely set of mics in a leather covered box with blue velvet inside, they were made in Germany. They got nicked over 25 years ago now, god only knows how much it would cost to replace them these days. They were given to me by an old guy, I would think back in about 1970/71. I doubt if apprentice engineers even get to see such things these days!
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