Yes it's possible with 180's. There was just a thread on this a while back. My brother was doing this for a couple of year when he had a 300win. He was using data for 200 grain bullets. Shot very well.Is anyone using retumbo with 180 gr ab in a 300wm? I am seeing guys running it in the heavys 200+. Is it too slow with the lighter bullets? I want to try to reduce the powders that I buy thanks
Yes it's a compressed charge but it'll go like hell. His rifle was doing 3100 fps on 200 grain bullets with retumbo and over 3150 with 180's. Great accuracy but it recoiled plenty stiff in a #1I would say it's too slow for the 180's. H-1000 is about as slow as I would go for 180 grainers.