I recently acquired a ROA and have had it out to shoot a couple of times. Mechanically, everything is great. But my groups are around 6" at 25 yds. I do much better than that with my Ruger Blackhawk in .45 which feels much like the ROA. While cleaning after this lastest trip, I noticed just how mirror bright the bore was. Then I notice that it seemed a little too bright like it had been polished. Measuring the bore by pushing through a lead ball, I find that the grooves are only .004 deep. Is this typical? Could this be why my groups are so loose? Or do I just need more practice?
ROA rifling
- Thread starter Oldnamvet
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ridgerunner1965
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- Dec 11, 2010
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what dia ball are yu useing?i think they are set up for a .457 dia ball.
Try a different load. I found RB's weren't too accurate at max or close to maximum loads. Home cast 200grs .45 ACP bullets did great however.
I remember the rifling on mine as being a twin of the one in a 1911, or of what I can see in my .45 Blackhawk.
I remember the rifling on mine as being a twin of the one in a 1911, or of what I can see in my .45 Blackhawk.
Last edited:
robhof
Member
robhof
The soft/pure lead used in B/p loads is soft enough to swage down and get a twist from even shallow rifling. As said above, try different loads, I know mine will hold 40gr, but will shoot much larger groups than 20gr, which seems to be mine's sweet spot for accuracy. I have 2 and one has a rough spot in the barrel about 1" back from the end of the barrel, apparently a squib that wasn't rempved for a time. I polished the area to make cleaning easier, as the rough spot was snagging the cleaning patches. even with the spot, the pistol groups as well as my other and I can get 2" groups at 10yds from a bench, but only with measured load matched weighed balls and consistant loading pressure.
The soft/pure lead used in B/p loads is soft enough to swage down and get a twist from even shallow rifling. As said above, try different loads, I know mine will hold 40gr, but will shoot much larger groups than 20gr, which seems to be mine's sweet spot for accuracy. I have 2 and one has a rough spot in the barrel about 1" back from the end of the barrel, apparently a squib that wasn't rempved for a time. I polished the area to make cleaning easier, as the rough spot was snagging the cleaning patches. even with the spot, the pistol groups as well as my other and I can get 2" groups at 10yds from a bench, but only with measured load matched weighed balls and consistant loading pressure.
dprice3844444
member
try 35 grains
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