Originally Posted by Brian.Samson
I have a tin of 4.51's and a tin of 4.52's here - the 4.51's are tight in the barrel, but the 4.52's will fall out of the breach if I hold the gun up. This isn't just the odd pellet either, it's every pellet I've tried from both batches.
Just an observation that backs up what Rob says about ignoring the head size on the tin.
That's interesting Bri.
I have a Zenith, probe load, which loves 4.51s and shoots like a shot gun with anything else, except Crossman Prem's.