tag:blogger.com,1999:blog-6867503761315699133.post881289196257805975..comments2023-09-25T07:37:47.803-04:00Comments on Plumbum et Circenses: Ammo "warning"ZerCoolhttp://www.blogger.com/profile/08347518441827166007noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-6867503761315699133.post-50419223766273388382014-09-30T17:37:33.545-04:002014-09-30T17:37:33.545-04:00I have run into anecdotal indications that (especi...I have run into anecdotal indications that (especially in colder weather -- like significantly below freezing) the 62 grain stuff doesn't always stabilize well out of some 1:9" barrels. <br /><br />I suspect that, if true, it's probably with barrels that aren't bored as tight, likely due to someone going cheap and using slightly oversize rifling cutters so they get more run time out of the tooling.<br /><br />I know the 1:9" twist won't adequately stabilize M856 (which is 64 grains). The reason is that stabilizing twist is more based on bullet <i>length</i> than <i>weight</i>, and the lower density of a tracer means that a similar weight bullet has to be significantly longer to make up the same "average" weight throughout flight.Geodkythttps://www.blogger.com/profile/09328915597574377444noreply@blogger.comtag:blogger.com,1999:blog-6867503761315699133.post-57092453491358407472014-09-17T21:18:00.578-04:002014-09-17T21:18:00.578-04:00True...LOLTrue...LOLOld NFOhttps://www.blogger.com/profile/16404197287935017147noreply@blogger.comtag:blogger.com,1999:blog-6867503761315699133.post-74945348002507877982014-09-17T04:34:50.224-04:002014-09-17T04:34:50.224-04:00Appreciate that, NFO. My information comes from th...Appreciate that, NFO. My information comes from the internet, and you know just how reliable that can be... ;-)ZerCoolhttps://www.blogger.com/profile/08347518441827166007noreply@blogger.comtag:blogger.com,1999:blog-6867503761315699133.post-64199530640713759962014-09-16T20:53:31.054-04:002014-09-16T20:53:31.054-04:00Actually I've never had a problem with 62gr in...Actually I've never had a problem with 62gr in my rifle. Now having said that, a 1/12 rifle won't stabilize ANYTHING over 55gr... 1/9 was actually done to support 855. 69gr and up need 1/7 to stabilize.Old NFOhttps://www.blogger.com/profile/16404197287935017147noreply@blogger.com