Typetwelve
Member
- Joined
- Mar 1, 2019
- Messages
- 644
So here's the data. After fighting issues with factory lead projectiles in 44 magnum, I decided to go 100% to Zero's 240g SJSP projectiles. These here:
http://www.rozedist.com/mm5/merchan...D&Product_Code=R177-A&Category_Code=ZBJ-44MAG
I've been loading them over 23g of H110 and running those through my Henry. I'm getting an average of 1603 fps from those loads, and they're fairly accurate.
I was noting that my accuracy was really going downhill so I did a hard inspection and noted the barrel to have some serious copper fouling. I spent over an hour cleaning it out of the barrel with Montana X-Treme Copper Killer, which is some serious stuff, BTW.
I took the Henry out on sat with those Zero loads and my first two 5-shot groups were dead-nut. As I shot them, the groups began to open up. I only ran about 35 or so rounds through it. Taking it home, I examined that barrel and sure enough, pretty nasty copper fouling again.
I guess, long story short, am I pushing these projectiles too fast? Should I be getting that kind of fouling so quickly?
http://www.rozedist.com/mm5/merchan...D&Product_Code=R177-A&Category_Code=ZBJ-44MAG
I've been loading them over 23g of H110 and running those through my Henry. I'm getting an average of 1603 fps from those loads, and they're fairly accurate.
I was noting that my accuracy was really going downhill so I did a hard inspection and noted the barrel to have some serious copper fouling. I spent over an hour cleaning it out of the barrel with Montana X-Treme Copper Killer, which is some serious stuff, BTW.
I took the Henry out on sat with those Zero loads and my first two 5-shot groups were dead-nut. As I shot them, the groups began to open up. I only ran about 35 or so rounds through it. Taking it home, I examined that barrel and sure enough, pretty nasty copper fouling again.
I guess, long story short, am I pushing these projectiles too fast? Should I be getting that kind of fouling so quickly?