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I had ordered a new MMbarrel but was still having accuracy problems. It wasn't the barrel but the inciinsistancy of the spread and Standard deviation. I ordered and installed an SSG from Wicked Air and this has essentially solved the problem. Still have some room to tighten the spread but the rifle is grouping consistently. It is so much easier to adjust the speed. Travis did a great job on this mod. Hope this helps.
Any reason not to go with a finished LW barrel for about $30-40 less?
The new MM Barrel vs. Stock.......... .22 JSB 18.13, at 35yds.
Yes, they need cleaning 100 to 200 rounds. 100 if you dont lube and 200 if you lube. Mine shoot best not lubed. The group above is good but it should do a little better. What power scope? Patches must be tight to get the lead out of the barrel. Two tight patches with np 10 or almost any oil will get most of it out. 6 patches is plenty to clean it. 25 yard 5 shot groups should be .15 to .20. Some smaller and a very few larger. 18.13 or the 15.9 shoot best in mine. I didn't read the whole post so i dont know the whole story just telling you my experience .
