excess650
50 Cal.
- Joined
- Nov 25, 2009
- Messages
- 1,671
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" He (Rice barrels)would reduce that to 1.250" diameter for a Forsyth rifled .62 caliber bore with 0.006" deep square bottom grooves, and a bore diameter of 0.632".
I have one of the 104" twist barrels and it appears to be .622" bore x .639" groove, so closer to .008" groove depth, and that isn't a negative. This particular barrel is 32" and tapers 1-1/8"-1", so should finish into a 9# rifle.
200gr is a hefty powder charge! My "little .62" weighs 7-1/2#, has a 2" wide buttplate, and a 66" twist Colerain that shoots nicely at 100-120gr fffg. At 140gr it would be OK for hunting, but not a powder charge I want to spend much time with at the range.
I have one of the 104" twist barrels and it appears to be .622" bore x .639" groove, so closer to .008" groove depth, and that isn't a negative. This particular barrel is 32" and tapers 1-1/8"-1", so should finish into a 9# rifle.
200gr is a hefty powder charge! My "little .62" weighs 7-1/2#, has a 2" wide buttplate, and a 66" twist Colerain that shoots nicely at 100-120gr fffg. At 140gr it would be OK for hunting, but not a powder charge I want to spend much time with at the range.