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<blockquote data-quote="rpierce" data-source="post: 1945949" data-attributes="member: 20643"><p>Your definitely correct. The vast majority of shops cut oversized chambers. Everything has to be perfect to get literally zero runout and no oversize. I have a pin gauge for my 300 norma improved that is .0002/ two tenths of a thousandths bigger than my reamer. It doesn't go in. The haas tl1 I have is cutting better chambers than I ever did on my manual clausing. And does it in a fraction of the time. The results of it being perfect are also noticeable on paper at long range. My customers on the national f class team have told me ever since I started using the Haas their barrels have shot smaller groups and are easier to tune and have wider nodes. The one guy sends me groups under an inch at 600 with every barrel Ive done for him. Great shooter and very good at load testing. My 33xc for example has an extremely wide seating depth window. .070-.095 off the lands consistently shoots 2-3" vertical @1000. 300 gr berger at 3225 fps. Rifle is 14.5 lbs w optics and modular evolution bipod. That rifle is set aside for only hunting now that loads are found and barrel life sucks LOL</p><p></p><p>The other benefit I have found is that warner tool and die can make a run of dies for me and they all work the same. You don't have to send 3x fired brass to him and wait 3+ months for dies for that exact barrel. Dan Warner has even told me he was very surprised how close the brass is to reamer spec. The dies are made to size brass to an exact "x" amount at the shoulder and web. When i size brass with his dies the runout needle barely twitches on sized brass. While his dies aren't cheap they are by far the best Ive ever seen. Cutting an oversize chamber wouldnt allow them to work optimally and would be very hard on the brass. Ive had dies that were out of spec before for the norma and one of em sized the brass .004 at the shoulder and web. The amount of force required to do that on the Lapua 300 norma brass was substantial.</p></blockquote><p></p>
[QUOTE="rpierce, post: 1945949, member: 20643"] Your definitely correct. The vast majority of shops cut oversized chambers. Everything has to be perfect to get literally zero runout and no oversize. I have a pin gauge for my 300 norma improved that is .0002/ two tenths of a thousandths bigger than my reamer. It doesn't go in. The haas tl1 I have is cutting better chambers than I ever did on my manual clausing. And does it in a fraction of the time. The results of it being perfect are also noticeable on paper at long range. My customers on the national f class team have told me ever since I started using the Haas their barrels have shot smaller groups and are easier to tune and have wider nodes. The one guy sends me groups under an inch at 600 with every barrel Ive done for him. Great shooter and very good at load testing. My 33xc for example has an extremely wide seating depth window. .070-.095 off the lands consistently shoots 2-3" vertical @1000. 300 gr berger at 3225 fps. Rifle is 14.5 lbs w optics and modular evolution bipod. That rifle is set aside for only hunting now that loads are found and barrel life sucks LOL The other benefit I have found is that warner tool and die can make a run of dies for me and they all work the same. You don't have to send 3x fired brass to him and wait 3+ months for dies for that exact barrel. Dan Warner has even told me he was very surprised how close the brass is to reamer spec. The dies are made to size brass to an exact "x" amount at the shoulder and web. When i size brass with his dies the runout needle barely twitches on sized brass. While his dies aren't cheap they are by far the best Ive ever seen. Cutting an oversize chamber wouldnt allow them to work optimally and would be very hard on the brass. Ive had dies that were out of spec before for the norma and one of em sized the brass .004 at the shoulder and web. The amount of force required to do that on the Lapua 300 norma brass was substantial. [/QUOTE]
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