So I want to build another custom and I am kicking around the idea of a 270 allen magnum 7mm allen magnum or just going big with a 338 or 375 allen. So if you have experienxe with theses calibers can you please give your two cents and maybe a list of pros and cons. I already have a 338 lapua and a 300 win mag and I do reload. I hunt elk and deer but am kinda liking the idea of a fast 270 for deer but if berger gets the new 7mm off the ground who knows. Well I hope someone can shed some light on this for me.