Re: Molly coated bullets
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Grumulkin</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: brand692</div><div class="ubbcode-body">Here are the lessons I learned from shooting Moly 6mm projectiles.
1. They typically have less resistance going down the tube.
2. Less resistance will directly result in lower pressures.
3. Lower pressures translate into less velocity.
4. Due to lower velocities, they typically use more powder, not much, but some, to create the same velocities as naked projectiles.
5. A moly coated projectile and a naked projectile, all else being equal, will produce lower velocities.
6. Be prepared to up the charge to get the velocity back to where the accuracy node is on a naked bullet.
7. The benefits of moly coated projectiles is widely argued. Technically, the biggest gain you can get from them, using them extensively, is longer barrel/throat life. But the benefits can be argued.</div></div>
I believe your logic is a little flawed. Lower pressure means there is less friction so you can increase the powder charge until the pressure is where it was before and the velocity will be higher.
That said, I'll never use moly bullets. Several years ago I attended a gun cleaning talk by one of the Jarrett boys. He described a coating in a barrel left by moly bullets that only came out after heating the barrel red hot with a torch. I guess if you make barrels, you can afford to torch them. I don't make barrels so I don't want that stuff in my barrel. </div></div>
Logic isn't flawed, but maybe I didn't explain well because it seems to me that we are saying the same thing.
When I shot the Berger factory moly VLDs and the naked VLDs, the velocities were the same after I adjusted the load. The molys would use more powder but were no faster or so marginally faster it didn't matter. I was shooting them in a 6BR and 6PPC, so case capacity may have played a role as well.
I agree with you, other than Moly bullets are faster in the end. Maybe they are in a case that has a higher powder capacity. But in the little 6BR and 6PPC case, I never got them to go any faster.
ETA: Faster wouldn't have helped anyways because they wouldn't have gone fast enough to reach another node. I was hitting pressure signs way before I'd ever get there.
