Re: Covering your muzzle in the field
+1 on the electrical tape. I put a piece over the muzzle so it extends a tad down the side and a wrap around the barrel over the top of the extended piece to hold it on. I haven't ever been able to shoot good enough to tell the difference, and even in wet weather it stays on. Black target dots work well in dry, but in the rain, I have had them get wet and fall off.