I did a little more checking into it. If your barrel is clean and you KEEP it clean, yea, you should have no problems shooting 40 or 50 rounds. Then you should expect to start seeing problems.anodes said:Whacky me, I've fired Aguila's Colibri rnds out of several rifles up to 24" bbls w/o problems! `Course I DID have to disassemble the first rifle to check the bbl due to the _very_ astounding lack of report after the first shot! Clear bbl. Many rnds fired since, heck, I've got what's left of a case... Revolvers, pump rifles and bolt rifles are included in the go to go list, for me. Ruger 10/22, no of course not... No blow back to cycle with. I have manually cycled the bolt for good results. Love `um.