You also have that age-old problem of ‘conditioning’ the bore when switching ammunition types. The bullets may look the same as a regular lead projectile but you also have problems with lubrication down the bore, which greatly affects fouling, especially build up in the rifling grooves and leads of the chamber area. Even with a sound moderator on your rifle this new lead-free hyper-velocity ammo is going to be noisy. 22 LR, which is the backbone of the sporting or vermin market. But for me, the main disadvantage is that you can no longer have a quiet subsonic. Some may say that’s great – I am sure our American cousins do! But it has a detrimental effect on ballistics, consistent velocities, accuracy and downrange energy retention. This has produced another problem in that the velocity for such a light projectile has increased past 1,500 fps, making it hyper velocity. 22 LR lead-free ammunition has bullet weights between 24 and 26 grains. 22 bullet is nearly half the weight of the original lead version. This, however, is not ideal as it means that for a bullet of the same dimensions – that is, with the necessary length to stabilise in a traditional 1 in 16" rifling – a lead-free. 22 calibre bullet lead free involves using some form of tin or zinc mixture. The trouble is that making a conventional. 22 rimfire lead-free types, this category has really been largely left out. With all this lead-free centrefire ammunition now being developed and the range of bullet types, calibres and weights being expanded, I find it extraordinary that bar a few. 22 Tin - and his concerns about the future of the.
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