FalconFN Posted August 30, 2010 Report Share Posted August 30, 2010 (edited) I recently bought another tin of bis mags for my Falcon and found that my accuracy was way off, I couldn't get groupings within 2" where previously I was getting 1/4" groupings at 30 yards. I had a close look at the back of the tin and noticed the size was 4.52 instead of the 4.51 that was on the previous tin. The chap in the shop didn't know why they were different as he orders them and gets what they send. Are there different sizes of bis mags and has anyone else had this problem? Edited August 30, 2010 by FalconFN Quote Link to comment Share on other sites More sharing options...
Dekers Posted August 31, 2010 Report Share Posted August 31, 2010 I believe the Bisley Magnum 4.5 (.177) are available in 4.51 and 4.52, with a slight difference in weight. I have a .22 Falcon and use AAField, the 5.51 size works best in my barrel, the 5.52 are too tight and I lose 0.3ft lb! Many dealers are not aware of the variations of pellet size available from several manufacturers and it is true to say most simply get whatever turns up! I often have a problem with AA 5.51, it seems most have 5.52 for some reason! Quote Link to comment Share on other sites More sharing options...
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