the_commoner Posted July 15, 2008 Report Share Posted July 15, 2008 forgive my ignorance if this is a stupid question....................... i was at my local gun club last night shooting a few clays, i have a beratta silver pigeon, a chap came up to me started chatting and said that the chokes in a berreta are 1 up from other makes ie 1/4 is 1/2, 1/2 is 3/4 etc he was shooting a browning 525 and compared the berreta to that, incidentally i used to have a browning 525 and have not particularly noticed any difference ???:lol:??? Quote Link to comment Share on other sites More sharing options...
MC Posted July 15, 2008 Report Share Posted July 15, 2008 Although I have never compared them my Beretta extrema patterns very tight indeed. For wildfowling with steel shot I only ever use cylinder choke and even then it is very tight. Quote Link to comment Share on other sites More sharing options...
casts_by_fly Posted July 15, 2008 Report Share Posted July 15, 2008 meinderby, If he patterned them side by side then I'd be fine with that conclusion. But only if he did them side by side and counted pellets. More realistically I'm going to guess that he measured the exit diameter of the chokes and is using that for his basis. In that case you have to call bull on him. The beretta guns come with a .723" ID for the bore. The browning guns have a .740" bore diameter. If you just measured the ID at the end of the choke the beretta would seem a bit tighter. Since choke is about change in constriction, you have to take the difference between the actual bore diameter and the actual choke diameter to get the constriction. It is possible that beretta has choked their guns a bit tighter; frankly I don't know. But there are only two ways for you and I to measure it and only one of them matters in the field. Thanks, Rick Quote Link to comment Share on other sites More sharing options...
bob300w Posted July 15, 2008 Report Share Posted July 15, 2008 meinderby, If he patterned them side by side then I'd be fine with that conclusion. But only if he did them side by side and counted pellets. More realistically I'm going to guess that he measured the exit diameter of the chokes and is using that for his basis. In that case you have to call bull on him. The beretta guns come with a .723" ID for the bore. The browning guns have a .740" bore diameter. If you just measured the ID at the end of the choke the beretta would seem a bit tighter. Since choke is about change in constriction, you have to take the difference between the actual bore diameter and the actual choke diameter to get the constriction. It is possible that beretta has choked their guns a bit tighter; frankly I don't know. But there are only two ways for you and I to measure it and only one of them matters in the field. Thanks, Rick Yep, spot on advice. If he measured his chokes against yours with a "choke gauge" that you insert into the barrel, marked 1/4, 1/2 etc, he is talking out of his nether regions. To clarify it a little more, a Beretta measuring .723 and a Browning measuring .740 at the chokes, if that is also the bore dimensions, will both be true cylinder guns. It puzzles me why these "choke gauges" continue to be sold, as unless the TC measurement on them is the same as the bore of your gun, they cannot give a true reading. Given the wide variation in bores, this is going to be unlikely. Quote Link to comment Share on other sites More sharing options...
the_commoner Posted July 15, 2008 Author Report Share Posted July 15, 2008 he suggested it was something to do with the forcing copnes on the beretta !!!!!!!!!! ?? Quote Link to comment Share on other sites More sharing options...
the_commoner Posted July 15, 2008 Author Report Share Posted July 15, 2008 and that he used to have a beretta and couldn't hit a thing with it ?? Quote Link to comment Share on other sites More sharing options...
bob300w Posted July 15, 2008 Report Share Posted July 15, 2008 (edited) and that he used to have a beretta and couldn't hit a thing with it ?? That does beg the question "Could he hit anything with the Browning?" To further clarify, a 12g can have bores of anything from .710" to .740", even though .710 is actually 13g in size, as was a Thomas Bland magnum that I owned many years ago. Edited July 15, 2008 by bob300w Quote Link to comment Share on other sites More sharing options...
casts_by_fly Posted July 15, 2008 Report Share Posted July 15, 2008 Hi Bob, They actually go up to .775 for a '12 bore'. Mossberg's 935 ultimag is overbored to .775" which is what they call 10 gauge spec. They make various claims on why it helps, but to be honest the consensus is that there is more effect from using a good choke tube than overboring/backboring. Thanks, Rick Quote Link to comment Share on other sites More sharing options...
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