riggers 2 Posted July 20, 2009 Report Share Posted July 20, 2009 (edited) hi all ok got myself some digital callipers and one of those gadgets that measure from the point of the bullet head that sits on the lands. bullet comparator set made a round that measures the size of the chamber to the lans and it was 2.734" or 2.343 to the point wich meats the lans ok so am i right in saying that i take it 5 thou back and keep working my way back till i get the bast group in rounds of 5 every 5 thou. second i am using v n160 starting at 42gns and working up in 5s ie 42.5 43.00 43.5 and so on am i right or completly wrong any help highly apprecieated. Edited July 20, 2009 by riggers Quote Link to post
riohog 5,939 Posted July 20, 2009 Report Share Posted July 20, 2009 5 thou is to close mate not enough lead you will als get more pressure build up 15 to20 or thereabouts yessome like it touching the lands but as your starting out i would go min 20 thou sure some will have other ideas though good luck Quote Link to post
riggers 2 Posted July 20, 2009 Author Report Share Posted July 20, 2009 5 thou is to close mate not enough lead you will als get more pressure build up 15 to20 or thereabouts yessome like it touching the lands but as your starting out i would go min 20 thou sure some will have other ideas though good luck cheers mate will see what else pops up does it sound like i am on the right track though with powder and such Quote Link to post
riohog 5,939 Posted July 20, 2009 Report Share Posted July 20, 2009 sounds about right havnt got the data in front of me but your about right set bullets at 2.7000 you wont go far wrong with that Quote Link to post
riggers 2 Posted July 20, 2009 Author Report Share Posted July 20, 2009 just a quick one if my digital calliper says 2.270 i take it that 2.260 is 10 thou off or am i way wrong you also said start at 2.70 my distance is 2.734 and thats to my lans so to the point of the round would be further would it not be that if i set my bullets at 2.70 then i am already missing the 34 sorry for all the questions just want to get it bang on Quote Link to post
riohog 5,939 Posted July 20, 2009 Report Share Posted July 20, 2009 just a quick one if my digital calliper says 2.270 i take it that 2.260 is 10 thou off or am i way wrong you also said start at 2.70 my distance is 2.734 and thats to my lans so to the point of the round would be further would it not be that if i set my bullets at 2.70 then i am already missing the 34 sorry for all the questions just want to get it bang on ill keep it simple set a dummy round no primer no charge at 2.7000 if the round chambers ok in the breech and not tight on eggaging or extracting thats ok then make up some live rounds and test fire them then alter to suit Quote Link to post
riggers 2 Posted July 20, 2009 Author Report Share Posted July 20, 2009 thanks mate but still dosent answser my question Quote Link to post
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