viking said:
What would the most perfect bore and groove size and twist be for a 50 cal fast twist?
Looking to try paper patching and try shooting some longer distances for Idaho.
If you paper patch, do you still get the leading with a fast twist?
No leading with Paper Patch bullets. Really depends on what exactly you want to do, Hunt or Punch targets long range? For a hunting rifle the 1:28 Twist has proven itself time and time again, it works, and works VERY well!
My Stainless .50 Cal Green Mountain LRH 1:28 twist Barrel has shallow Grooves, i dont know the exact Groove depth? But i would say 0.004, maybe 0.005 Max like 52bore said. My bore diameter is .500, As far as longer ranges with my .50 Cal, i just haven’t been there with .50 Cal yet. 200 yards is the farthest I have shot my .50 Cal. Accuracy was AWESOME for me at 200, i filled my Doe Tag with it, but haven’t shot it since. .50 Cal and REALLY long range (300 plus) just doesn’t interest me a bunch. I have made my 2 .45s my ‘Pet’ Long range rifles, i have been to 500 yards with my 1:30 Twist .45, And plan to take that a BUNCH farther this spring/summer with the new 1:18 Twist .45 Cal that my Close friend Idahoron Gifted me.
Idahoron has successfully taken the 1:28 twist .50 Cal out to 300 yards with peep sights, Ron uses the Lee S&W 500 bullet wrapped with 2 wraps of 9# onion skin paper and sized to .501, Ron has been killing Big Game with that bullet for a VERY LONG time now, it is WELL proven over n over!! I use a very similar bullet to Ron’s, but have yet to prove mine beyond 200 yards. I advise you to get in touch with Ron, Watch his YouTube videos, Ron has an AWESOME channel! If you plan to hunt with your .50 Cal and reach out to 300 yards, Mr. Idahoron can NO DOUBT get you there!! Until i have more time with my .50 Cal at longer ranges I really can’t help ya, i would be guessing. If it is Targets you want to shoot i would advise AGAINST both mine and Ron’s hunting bullets, For targets my advise would be to go with Buffalo Arms .492 450 to 550 Grain PP bullets, they are a very precise bullet as they are swaged and not hand casted, they are a cupped base paper patch target bullet.