Home Forums Reloading Big Game Rifles Subsonic Suitability of A1680

I'm almost out of Viht Tin Star and need to find a suitable replacement. My son's favorite load in his 357 Maximum single shot rifle is 9.5gr Tin Star and a 200gr LHP bullet for 1160fps. I started with and obtained excellent accuracy using Trail Boss but I ran out of case capacity at 920fps and the bullets wouldn't expand in wet newspaper. At 1160fps the 30:1 alloy expands the HP nicely and he and I both have killed deer with that load.

Using QL, I find that 14gr of A1680 may get close to 1160fps with a 70% case fill. I plan to start my testing at 17gr and work down to 13gr. I will load them with CCI 450 primers. Anyone foresee any problems with using A1680 in this endeavor?

Thanks, Dinny

Have played some with 1680 and it should work.

This was in a 25-45 and a 556.