Moly vs. regular jacketed bullets
I have heard that a moly coated bullet will gain about 200fps and it will lengthen the time between cleanings. I have also heard that you should go one way or the other moly or regular don't use both in the same gun. Did I hear right? If I can mix and match what loads in 7mm Rem mag can I buy off the shelf.
Darrell
Darrell
0
-
Well, Darrell -
You'll get about as many opinions on this subject as there are members on the board. Some like Moly, some hate it. You can slot me in the last group.
Starting with a nice clean barrel, it must be "seasoned" with moly to obtain the desired results. There are products on the market to coat the bore, in addition to the moly prepped bullets. You can buy moly coated bullets or do your own. Be prepared for a messy operation and handling if you do your own.
During barrel seasoning, the rifle will group in "minute of backstop". Usually takes a minimum of 40 - 60 rounds to start getting the barrel into shape. You will notice a decrease in pressure and velocity as the moly takes effect. This is due to reduced friction in the barrel. Now, if you want to retain a certain velocity and Point of Impact (POI), you must add more powder or use a faster burning powder to boost back up to the former non-moly'd performance. In the meantime, cleaning of the bore is usually done carefully so as not to remove the moly treatment, yet get the fouling and copper build up out. This is sorta tricky. What normally happens is that the moly builds up unevenly in the bore and becomes "lumpy" in spots. Being a clean firearm fanatic, I could never stand to have such conditions in my bores and would tend to remove down to the metal again to have pristine bores.
Rick Jamison, a noted gun writer, conducted a test a couple of years ago to determine the benefits of moly coatings. After it was all said and done, his conclusion was there was insignifigent benefits to warrant the use of moly. That varmit shooters could possibly benefit due to the thousands of rounds they tend to shoot and keeping barrels hot, but for the average shooter, it was a waste of time. I have since de-moly'd all my rifles and bullets. Going back to bare jacketed bullets has stabilized chrony'd volocities and groupings. I'm much happier now, and the gun room is slowly losing the black smudges on equipment and door knobs!
Keep off the Ridgeline0 -
I agree 100% 0 -
i am glad you know what your talkin about, could not be spoken any wiser 0 -
quote:You'll get about as many opinions on this subject as there are members on the board. Some like Moly, some hate it.
The only thing I can add to that (and I 110% agree with Kdub) Some guns like it some don't. I myself have quit using it. I just whent back to what I know works. [:D]
Proud Member of
The Secret Society of
Black Helicopter Pilots0 -
Kdub nailed it!!!!
Love them Pre-64's!!!!-Bob0
Please sign in to leave a comment.
Comments
5 comments