Originally Posted by
hunters_life
Thankyou both. I just ordered a box of the .400 185 grain CF and a box of those .400 215 grain CF. I also ordered the H4540B sabots from Harvester and the Tan MMP's. Not sure those MMP's will hold up at all. Funny that they don't make the HP for .45 barrels. I also went ahead and ordered another sizing die from Swinglock for smooth sizing the .451-.452 bullets.
Now one thing I do remember is the old man using sub bases sometimes for his land riding bullets in his Thompson center barrel.
They are MMP Sub Bases for 50 cal. only. I use them a lot for sabotless shooting.
For shooting a 45 with a sabotless bullet I use a:
460" diameter, ideal for .45 caliber rifles, .125" over powder card, 1000, by
Circle Fly Wads
From Track of the Wolf:
https://www.trackofthewolf.com/List/Item.aspx/173/2
It seems they don't make them, or I can't find them, in .45 so I guess I'll have to do some cut down versions from some .45 sabots. Unless you guys think I would be better served with the cushion of a veggie wad. Just makes sense that a sub base would be better at pressure transfer and sealing the bore.
GM54-120, from those traces you posted, it does seem I would be best served with N120. I have a pound or 2 so I'll give that a swing. If you remember, I was going to use that as a booster in a duplex load. Looks like it has a little more power than the 4198 I was using with those 300 grain Noslers. Thanks again for those traces.