Less than 200 but the next one, I own my reamer, should not take the load development this one took. I built it for H1000 but it is not slow enough. Anything over 500 rounds will be a bonus IMHO. I only use it when 8-1400 yard shot could happen and that ain't often in SC PA but I have a couple of spots. Also I "know" some people for chambering... It's not for everyone.