Bore sight?

Two questions(sorta):

1. Do you guys ever use a bore sight? If so, can you recommend one? (I've never zeroed a scope and can't even see where I'm hitting with my .25.)

2. I saw this one, among many. It looks like it will do for my .177, but the 4th pic down shows adapters in ascending order ... and re my .25 they have .21-24 and the next one up .265-315. Should I write this one off or maybe just wrap some painters tape around the smaller one to swell the size?

https://www.amazon.com/gp/product/B07Q1761PD/ref=ox_sc_saved_title_6?smid=A2IHGB756CVHET&psc=1




 
Thank you for the feedback, guys.

I have a Georgia Airguns-power-tuned Cricket .25 and I am nervous about shooting it at a really close target. The first shot I ever made through it, I heard a ricochet off in a weird direction--like too close to the house and maybe me--that made me a bit nervous. I don't want to start really close and then walk my zero out. I'm thinking minimum distance 25 yards. But at that point, I miss a plastic grocery bag target that's about 2x2 feet entirely. 

I am thinking of going to the dollar store and getting one or two or their cheap poster boards, dotting the middle, and seeing how that goes. But since I don't even see leaves on the ground stirring around my target now, I think I'm just going to go for the bore site and try to be done with the guess work. It's just not working for me.
 
Rubber mulch, found in the gardening section of your local home improvement store (or garden center) makes a great fill for a cardboard backstop. I wouldn't bother with a bore sighter unless I was shimming the scope and bedding the rings to get a zero with the scope adjustments at mechanical center. Doing so is a near-fanatical step suitable only for benchrest at one distance.

GsT
 
I just looked up duct seal on a visit to Home Depot. Ye gods that stuff was expensive there. 14.95 for what looked l like half of a regular brick. Filling a trap with that could get very expensive. I didn't plan on spending 200 bucks to fill a trap. Maybe there's a better price else ... but it would have to be MUCH better.

Unfortunately they were out of rubber mulch too. 😡
 
That green one would work just fine and you think how in the hell hell you did without it.

I got it and wow it made things easier. Thanks for the encouragement! It's not clinically precise, but it gets me onto the paper in just the right way immediately. I can take it from there, more or less. Without it I was lost, especially with the tiny, almost invisible marks my .177 makes in many targets.

I have the PARD NV008lrf, which notoriously casts its crosshairs low, so others might not find the solution I find invaluable to be valuable at all.
 
The other one that works is the bore sighter kit with the optical grid. I have a different brand I bought many years ago and it works too. Bought it for my firearms actually but it has 177 Arbor included but I only use wooden and fiberglass dowels and not stick the metal arbors-rods into my airgun barrels. This type gets you on target closest than the laser and less headaches when setting adjustable rings for various distances. Example zero it for 50 and 100 yards using adjustable mounts to optically zero in your house even during night time without going outside nor shooting the gun. Pretty darn close using the optical grid while looking through the rifle scope.

https://www.amazon.com/XAegis-Boresighter-Kit-Precision-Firearm-Sighter/dp/B06XHGQV21/ref=mp_s_a_1_32_sspa?adgrpid=56409290552&dchild=1&gclid=CjwKCAjwz6_8BRBkEiwA3p02VSoU579ycnjQ7KPFsHjAznoeHYuLyA25HRotmguRwQPTonFSpLSFABoCkaAQAvD_BwE&hvadid=274721341383&hvdev=m&hvlocphy=9032751&hvnetw=g&hvqmt=e&hvrand=11175066056318715514&hvtargid=kwd-300999679669&hydadcr=9877_9624919&keywords=bore+sighter+kit&qid=1603013670&sr=8-32-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzVjk4Tk0xSUw2NzRQJmVuY3J5cHRlZElkPUEwNTEyNTU2MUZZWFpQNldJUDZESyZlbmNyeXB0ZWRBZElkPUEwMDkxMTk3RTJJWElCRlBUSlNSJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2J0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=