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Can someone tell me what the hottest load would be that I can safely run thru the SP-89, w/o damaging the gun? I have an orig. bolt head, and a new, unused action 3 bolt head. For just target shooting, I run Remington UMC 115 gr. Thats fine, but if I ever wanted to use the gun for personal defense, and keep a loaded mag around, would 147 gr. HP HydraSHock damage the weapon,or worse, cause a jam or mis-fire, if I ever used that ammo in the gun? This is a low probability scenario, because it would not be my weapon of choice for PD, but just a what if. I know the manual says this is a no go, but would it damage the weapon. Thanks?
 

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Any standard pressure spec load should be fine. Unfortunately, the SP89 didn't gain the benefits of the "F" model upgrades to the MP5, so I would shy away from any +P or hot loads.
 
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