Moly
- Thread starter aninchlow
- Start date
I have only used moly in .41 mag. It required more powder to bring a bullet up to speed. It could be pushed faster than wax-lubed before it started to lead. Lee Alox allowed the same increase in speed. If there is a little leading in the barrel prior to using moly bullets, I can imagine ( I don't know) that it would affect accuracy. Doing a chemical clean job prior to using moly bullets would maybe ( again - I don't know) ensure a slick sliding bore.
When an autoloader bullet is being chambered, the tip of the lead touches, then slides a short way along the chamber. If there is a lube streak left, it gets hammered into the case as it expands on firing. This little streak of lube and burned lube seems to make the cases dirty unless I clean the chamber occasionally. I can imagine a little buildup of moly doing this also in an autoloader.
Oh - I have used moly in a 30 06 and a 300 mag also - accuracy was fine, but the Hornady bullets had no sealer coating on the surface, so the moly ends up on everything. They too required more powder to push them up to speed.
On the upside, the moly will lube the case neck as it slides in, likely ( again I don't know for sure) making a more consistent chamber pressure on firing.
When an autoloader bullet is being chambered, the tip of the lead touches, then slides a short way along the chamber. If there is a lube streak left, it gets hammered into the case as it expands on firing. This little streak of lube and burned lube seems to make the cases dirty unless I clean the chamber occasionally. I can imagine a little buildup of moly doing this also in an autoloader.
Oh - I have used moly in a 30 06 and a 300 mag also - accuracy was fine, but the Hornady bullets had no sealer coating on the surface, so the moly ends up on everything. They too required more powder to push them up to speed.
On the upside, the moly will lube the case neck as it slides in, likely ( again I don't know for sure) making a more consistent chamber pressure on firing.
I’ve shot molycoated and copper plated bullets and I see no big difference in accuracy, (5 rounds in a business card at 100 yds) slight difference in velocity. I only shoot 200 rounds out of my 270 a year. I have a friend who shoots 5000+ rounds a year(all molycoated) in each caliber of 223, 243, and 1500 of 30-06 and 7mm ultramag and he said it helps when they do the gopher town thing of 1000 or so rounds a day (4 rifles for cooling). He still has to change the barrel on the 243 and the 7mm after 3 years because the barrels are shot out. The part I didn’t like was the clean up after; it takes forever to get a clean patch. Then a few more molycoated bullets and back to square one.
Now do I feel it’s worth the extra money for molycoating: Nah. My 2 cents.
Now do I feel it’s worth the extra money for molycoating: Nah. My 2 cents.
