Allen is on the right track - I use my 308 BLR mostly for culling feral goats - we can sometimes get onto mobs of 20+ with only a couple of shooters and the standard 4-shot BLR magazines are a limiting factor. I wouldn't want a 20-shot mag though, any more than about 8 shots would really spoil the balance.
I emphasise that this is for culling of feral animals; if I was going deer hunting I'd be more than happy with the 4-shot mag.
Ian
