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Thanks! I'll og have a look at it over new year!
It should be possible to load the 10,75x68 with 400grs solid to App 2100fps? That equals the .450/400!
Any thoughts regarding barreltwist?
The rifling twist in my Oberndorf sporter now opened up to 404J but originally a 10.75x68, is 14.17 turns to the inch according to the early Mauser specifications. It groups 400gr bullets accurately with no sign of instability and the original 347gr projectiles are very accurate. I have never tried any of the longer monometals such as the Barnes 400gr so do not know if this slow twist would stabilise such a long projectile.
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Re: Husky M98 FN Browning in 9,3x62 to .404 Jeffery