adamjp Wrote:The locking lugs of a Howa Mini are smaller than a standard Howa. Not only is the action less length, but thinner as well.
As for pushing the Grendel case. I've been running the bolt action Grendel for some time now and my best loads do not exceed published load data for the AR15 based Grendel. I do seem to get more velocity, but I put that down in part to the 21in barrel and the complete absence of a gas system to feed.
If you are looking for 200fps more velocity for a 120gn bullet out of a Howa over your AR15 Grendel I strongly suggest you buy a 260 Remington/6.5x55 Swede. The Howa Mini chambered in Grendel isn't going to do it (and have the cases last more than 3x reloads).
Maybe not with micro action, but I believe it is more than achievable with a short action. I was getting +200 fps over published Hornady load for 129 Interbond using CFE 223; I could go higher with other powders listed. See http://www.65grendel.com/forum/showthrea...rbond-load
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