Picked up a mint condition t200. Slight problem of air blowback from the breach when firing. This is the frist 200 i have had so unsure if this is normal or will i have to get a new breach seal. Its an older gun serial number 009972. Chrono puts it at 11.51 on bisley mags, guess it's pre anti tamper as well. Obviously its the target model just wondered if anyones got an age for this little rifle. Had to add a home made spacer to cheek and butt to fit me, but for 100 quid with scope and aa silencer plus a few other bits and bobs couldnt turn it down. Just curious of age and blowback issue.