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Hunting
The Basics, Starting Out
338 win mag accuracy
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<blockquote data-quote="jjmp" data-source="post: 193409" data-attributes="member: 9664"><p>wade,</p><p>mite i sugest you use one bullet for barrel brake in,sierra bullets jackets are harder and will burnish you rifleing better than useing 2 or 3 different makes or manufactures bullets,barnes while an awesome bullet smear more than any other bullet ...cause they are softer, your powder choices are fine, your barrel wants to shoot you see that by your groups getting tighter. but while brakeing in a new barrel you should not shoot for groups ,because your shooting and cleaning ,shooting and cleaning, wet bores even dryed with a flannel cloth will throw fliers because as stated above it takes at least two fired rounds to dry and foul the bore..try some sierra 215 grain boatails.....a good copper remover is barnes CR-10.lightly kiss your lands, some barrels take longer to brake in then others because their bores have tool marks and these strip metal from the bullet jacket when it fired down the barrel thus showing up as copper build-up....try some JB-bore cleaner this will not harm or barrel but it will hasten barrel brake in....i shoot a 26 inch ss..#5 douglas xx, 1-10 twist barrel 338win/magnum my self...shooting a 300 grain MK...you will be in the low 2400 fps range...harris is very good i use them also......regards</p></blockquote><p></p>
[QUOTE="jjmp, post: 193409, member: 9664"] wade, mite i sugest you use one bullet for barrel brake in,sierra bullets jackets are harder and will burnish you rifleing better than useing 2 or 3 different makes or manufactures bullets,barnes while an awesome bullet smear more than any other bullet ...cause they are softer, your powder choices are fine, your barrel wants to shoot you see that by your groups getting tighter. but while brakeing in a new barrel you should not shoot for groups ,because your shooting and cleaning ,shooting and cleaning, wet bores even dryed with a flannel cloth will throw fliers because as stated above it takes at least two fired rounds to dry and foul the bore..try some sierra 215 grain boatails.....a good copper remover is barnes CR-10.lightly kiss your lands, some barrels take longer to brake in then others because their bores have tool marks and these strip metal from the bullet jacket when it fired down the barrel thus showing up as copper build-up....try some JB-bore cleaner this will not harm or barrel but it will hasten barrel brake in....i shoot a 26 inch ss..#5 douglas xx, 1-10 twist barrel 338win/magnum my self...shooting a 300 grain MK...you will be in the low 2400 fps range...harris is very good i use them also......regards [/QUOTE]
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The Basics, Starting Out
338 win mag accuracy
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