I shoot a Knight Disc Magnum .50 cal. and have been shooting the 265 gr. jacketed hollow point Knight Swift A-Frames. They quit making them and I'm down to my last few & looking for a good hollow point sabot to switch to. Any suggestions, I'd like to purchase 2-3 different ones, shoot them, & see which shoots the best out of my smokepole.

Did you visit Swifts web site, to see if they still make the bullet?

I found at least 2 places that stock them using a quick Google search.

Just the bullets
http://www.thegunsource.com/item/381...GR_50_BOX.aspx

New Old Stock Knight packaging
http://grizzlymike.com/blackpowder/K...FT_900205.HTML

If you want a similar bullet for MUCH less, www.wideners.com has the Nosler 45-260gr and 300gr Partitions for about half of MSRP.
http://www.wideners.com/itemdetail.cfm?item_id=528&dir=

I don't know about the Swifts but Noslers are a bit small OD than other .452s. They are actually closer to .451 like Barnes so you may need a different sabot than what shoots best with a typical .452 caliber bullet. In my bores, i had to use a MMP short sabot to get the same loading pressure as the Harvester short black i normally use with other 45s.

GM, i also found numerous places that sell them online and Swift still lists them on there web site.

Another well made and reasonably priced alternative is the .250 gr deep curl/gold dot, with either a harvester crushed rib or mmp-24 sabot.

I finally found a load my Knight .50 Elite loves, the Knight red hots, which are the Barnes 250 gr large hollow points in the all coppper bullet with their orange sabot which loads nicely. Especially nicely compared to the batch of barnes bullets I tried years ago with the black sabots which were pretty tight. I was a little worried when then went down easier since I/m using BH 209 (115gr measured) and a std ww primer. Without any fancy sandbags, just off my fanny pack they shoot 1 5/8 at 150 yards (my zero) and then from sitting at 200 with a high lung hold dropped right into the group. About 4 1/2" high at 75 yards. I'm gonna stock up on these for hunting, because this is the best accuracy I've found yet for this rifle. I've tried gold dots, buffallo ssb, hornady's plastic pointed and pistol bullets, and the barnes with black sabots. The rifle seems to like these best.