Here are the results of load development for the fire forming load with my Ruger MPR upper. I put on a linear comp on the barrel otherwise the upper is stock. I ditched the factory lower and built a new one. Lets go Brandon receiver, triggertech set to 3lbs, seekins lpk, prs lite stock, cant remember the name of the grip. To be fair it shot good 100% stock too, but I only tried factory ammo.
New Starline 556 brass. FLS, mandrel, chamfer
53gr vmax
25.5 gr of xterminator
Fed AR Match SRP
First target I had the 27x target scope on it to confirm the load is good. One flyer I am pretty sure was me since the gun recoiled to the side on that shot. I notice its really important to drive this gun and focus on loading bipod follow through etc. It was a little breezy this day.

Second target is sighting in the Tract 2-10 for coyote hunting. Wind was really calm. Let the gun cool a little between groups but it was still warm.

Im pretty dang happy with that for a Ruger gas gun! I have 500 rds on it now and no jams either. Shooting from a stable table which ain't very stable lol

New Starline 556 brass. FLS, mandrel, chamfer
53gr vmax
25.5 gr of xterminator
Fed AR Match SRP
First target I had the 27x target scope on it to confirm the load is good. One flyer I am pretty sure was me since the gun recoiled to the side on that shot. I notice its really important to drive this gun and focus on loading bipod follow through etc. It was a little breezy this day.

Second target is sighting in the Tract 2-10 for coyote hunting. Wind was really calm. Let the gun cool a little between groups but it was still warm.

Im pretty dang happy with that for a Ruger gas gun! I have 500 rds on it now and no jams either. Shooting from a stable table which ain't very stable lol

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