I acquired a sporter No 4 Longbranch, the barrel was cut down to 22in and the stock done up too.
I cleaned up the crown last night and since it is a 2 groove it was very easy to measure the bore, the numbers are 0.311 and 0.290, so I feel like this would be a great candidate for 0.308 bullets.
I wish I had some 150gr kicking around but I have a lot of 220gr and it got me thinking. Since the gun has open sights only this will be a shorter range setup, so why now try the 220gr in this rifle?
Quickload shows essentially a 91% load of IMR4831 (38.5gr) giving about 40,000 PSI and run around 2100fps, I adjusted the groove diameter and bore area.
Does anyone have any load data that could corroborate this or give me some ideas? I know that Woodleigh has a 215gr jacketed bullet but I do not have any clue the reloading data for those.
Quickload also shows 33.8gr of IMR4895, a 76.5% fill, giving a 2050fps velocity as well.
Velocities are from a 22in barrel.
Thoughts?
I cleaned up the crown last night and since it is a 2 groove it was very easy to measure the bore, the numbers are 0.311 and 0.290, so I feel like this would be a great candidate for 0.308 bullets.
I wish I had some 150gr kicking around but I have a lot of 220gr and it got me thinking. Since the gun has open sights only this will be a shorter range setup, so why now try the 220gr in this rifle?
Quickload shows essentially a 91% load of IMR4831 (38.5gr) giving about 40,000 PSI and run around 2100fps, I adjusted the groove diameter and bore area.
Does anyone have any load data that could corroborate this or give me some ideas? I know that Woodleigh has a 215gr jacketed bullet but I do not have any clue the reloading data for those.
Quickload also shows 33.8gr of IMR4895, a 76.5% fill, giving a 2050fps velocity as well.
Velocities are from a 22in barrel.
Thoughts?