Shooting 250-400 gr bullets , max loads . Called local hardware store and auto parts , no rosin . Not sure they knew what I was talking about .
Like I said , have same rings on a 444ss and a hi-wall 45/70 and a couple magnum calibers, never had this problem before .
The gasket form , guess after install you just use a paper towel and brake cleaner to remove any excess ?
Would Walmart carry rosin in sporting goods ?