JSB pellet question
I was using JSB exacts 8.44g 4.53s batch number 1565415 2 4.53. The skirts were thick, the hollow was deep and each pellet was of really good quality. Both my guns loved these pellets. Intershoot has run out of 4.53s so I'm currently using 4 tins I got off someone, again 4.53s but this time batch number 45480015 2 4.53. My Steyr has been cleaned before use and groups I'm getting are not the best, the pellets do not sit as snug in the barrel either. In fact they near enough fall out of the barrel if I load when not level. I've not got my TX to try them through currently.
I'm sure this has been done to death but I'm after the same pellets but I'm unsure what to go for. If I again order from intershoot when they come in would I be right in assuming 15, the first two figures, are the die numbers so I'd be looking for any pellet beginning with the same numbers?
Or is it all trial and error?
Steyr LG110 HFT 2014, Warren Edwards grip set, MTC Viper Connect 3-12x32 SBC
Air Arms TX200 mk3, walnut stock, Delta Optics 4-14 HFT