Originally Posted by
pinzgauer
Before you head too far down that path I would look at reduced power service rifle loadings. ("Universal Service Rifle load")
The standard is 16 grains of 2400 for 308 to 30/06 size cases.
Works extremely well. I use it extensively for 7 mm Mauser loadings. Shoots the same point of impact out to 50 yards. You also use it with same to slightly lighter-weight bullets. But nothing super lightweight in terms of bullets. For 7mm mauser I shoot 175 down to 150g. Below that accuracy suffered.
But you can't just download with any arbitrary powder, 2400 is not position dependent and is about the speed you want. Other powders are dangerous with mostly empty case loadings.
Trail boss is normally okay because it's so fluffy you can get exact loadings without worrying about position dependency. But for rifles you may not be able to get enough steam. I'd get a box of 148 grain wad-cutters and go to town with trail boss in your 38. You will be amazed.
I'd have to check but I believe Unique is another one people are using for smaller cases. I'm pretty sure there is a reduced power 223 loading the service rifle guys are using.
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