I got a 1018 set from Barbed Wire Offroad over on Pirate.I have done about 1k holes in 16ga. with my 2"die and it is no worse for the wear.I debur all my holes after I punch them so I think that helps prevent wear.
Thanks for the replies guys. I got some information on a set of 3 for $100.00 and $7.00 shipping at a site called www.straightlineinnovations.com The sizes they have are 3/4, 1-1/4, and 1-3/4 inch dies made from 4140. probably check them out, but thanks for all the info !
I just got a set off of a vendor at Pirate 4x4, I think his name over there was Bobbyjoe. They are 1018 I believe 1/2" up to 3" and a dzuse fastner die. cost was around $240 including shipping, he's located in El Cajon if I remember correctly.
The quality looks good, I haven't had a chance to use any yet. We'll see if they were worth the investment.
I just put a larger bottom die in, with a smaller top die, and run it through our scotchman ironworker. works really good, punches and dimples at the same time, looks slightly different than a true dimple die would.