Need a load for 1/8 bull barrel

[Hefights]

Have you tried 69gr bullets in this barrel?

[joem]

Have you tried 69gr bullets in this barrel?

Yes. I tried 69 gr seirras and Noslers. NO Good groups with either. Also tried some surplus powder that shoot very well in my other rifles. I did fire 50 rounds rapid fire. One 30 and a 20 rounder. Barrel very hot. Shot some 62 gr SS109. Groups much better but as it cooled down groups opened up. Maybe fire lap is in order or hack saw to finish.

[Former Cav]

you will be happier with the groups using a 77 sierra match king (or 75 grain hornady) bullet in that 1 in 8 twist barrel.
You can seat them deep enough to fit the magazine too.
I've used VARGET for years now. 24.5 grains, 77 Sierra Match king, and Standard Small Winchester brand rifle primers in LC brass.

REMEMBER.... ALL DISCLAIMERS APPLY. MY RIFLE CHAMBER / THROAT IS DIFFERENT THEN YOURS. REDUCE ALL LOADS 10 % AND WORK UP FROM THERE.