Some on my forum wanted me to do a test and see if a Bore Cot or anything covering the bore for the matter could change your POI or hurt accuracy. So i did this test with the Apex, Upper 3 shots were without, The other 3 shots were using Bore Cots over the muzzle.


I was pretty amazed that the bore cot caused the impact to drop 2" lower.

Basically just goes to show you how just a simple thing can actually change the way your rifle shoots.

Now that opens the door to a whole new set of tests. Bore cot vs. electricians tape vs. masking tape vs. plastic wrap & a rubber band, etc.

How far out was the target?

130 yards.

just a thought i use a small balloon dosent seem to bother poa

That's what I use. They're called "Water Grenades"

next time at the store i will pick up some supplies and try those out.

Good info Jon,but in most cases people using them will have time to remove them.although it would be good for anyone using them to know exactly where the POI is, just in case they don't have time to remove it. Ray

When hunting i have always used electrical tape on the muzzle of all my rifles. Two pieces crisscrossed, and another wrapped around the barrel to hold them more better. This thread got me to thinkin' some, so this morning i gave the tape a try compared to without tape. The rifle was the V2, and the load was a 200g Shockwave pushed by 115g BH209, lit by an STS primer. The range was 198 yard. Six shots were made. The unmarked bullet holes were made with a naked barrel. The first shot was with a naked barrel, and the next was taped, and the next was naked, and the next....................

excellent report ron!

It looks like tape as well does screw things up.

This had been some good testing, we all learned something from this.

Does it say to leave the barrel rubbers on when shooting?