What cast/coated 45acp bullet will work/feed best in my Sig 220 Carry?
Factory jacketed bullets work fine, but so far cast bullets that I have tried )180SWC, 230RNFP)do not feed well.
Any suggestions? Thanks

I've used a 200gr Lazercast LSWC with good results in several guns, including a P220. I had to tinker with the seating depth / OAL a bit to get the bullet to feed reliably from the 220 magazines. As I recall, it needed to be seated just a bit shorter than is normal for that bullet. I think the 220 magazine has a bit less clearance in the bullet nose area than a 1911 magazine does. I've since sold the gun, but not for any reliability issues.

My first P220 would not handle the SWCs I load for 1911s. I do not ask the second one to try. Roundnose is the easy way out, a truncated cone might be worth a try.

Missouri Bullet Co's 200 gr LSWC works well and feeds in 9 different 1911's plus my factory nickle P220. Accuracy is comparable to any of my better 1911's...two handed, Weaver stance groups from the 15 yd line will cut into an inch if I'm doing my part.

I've found that getting LSWC's in .45 cal. to feed is usually a length problem. Try varying it short to long and see what you get...longer is better for me. I cast a copy of the old H&G #68 with good results and that Missouri LSWC is a copy of it except for the bevel base.

Try Win 231 +-5.0 grains, and leave just a smidgon of the lead shoulder showing (like maybe 1/32"; just enough to keep the case mouth from contacting the feed ramp or barrel hood)...do a plunk test too. A 1.240" LOA works well through all of my guns. If you run into leading at 0.452" dia, try re-lubing with Lee Liquid Alox with their swirl lube technique. You can do a box of bullets (500) in a cpl minutes and let dry overnight. I find most hard commercial lubes are virtually worthless until velocity gets up there. That 5+- grain load I mentioned is just under 800 fps over my chrono.

I also cast a copy of the military FMJ, (Lyman's 452374) and while it's ok, it isn't as accurate as any LSWC that I've yet tried. Too, I hate turning a tapered crimp over the first part of the ogive. By casting the 200 H&G, I'm saving about 30-35 grains of wheel weights on ever trigger pull too!!

HTH's YMMV, Rod

IF your gun won't feed a 230gr RN anything, something is wrong. Lots of 230gr LRN, coated or lubed.

I have been feeding my 45ACP chambered P220s the H&G #68 since the 1970s

No other cast projectile has ever been through any of my Family's 45ACP auto-loaders.