So I loaded some 53grn flatbase TSX's 19.5grns Rl-7 for my dads .222rem the rifle is a BSA bolt action . We shot them at 50yards and they keyholed and I cant figure out why, the load worked prefect with the 53grn matchking whats different with the TSX.
Tumbling TSX's Help me out.
- Thread starter doubleman
- Start date
The 1-14" twist 222 is definitely "iffy" for the 53 TSX, but occasionally, a 1-14" twist will stabilize them. No rhyme or reason for it, just some small difference in individual firearms. Obviously your BSA will not. You need to try a shorter bullet for your rifle. Regards, Eagleye.
Keyholing is caused by undersized bullets or an oversized barrel.
Barnes bullets require Barnes Data. Their site doesn't show Rl-7 for a 53 grain TSX out of a .222. They do say a 1 in 14 twist will not stabilise that bullet.
Their data(limited) is on their site under 'Technical'.
Barnes bullets require Barnes Data. Their site doesn't show Rl-7 for a 53 grain TSX out of a .222. They do say a 1 in 14 twist will not stabilise that bullet.
Their data(limited) is on their site under 'Technical'.
They shoot fine out of my model 70 22-250 which is 1-14" and the TSX is nearly the same length as a 50grn v-max which shoots 1/2" groups out of the .222. I guess we will have to get a box of 45grn TSX's for the .222.
Thanx for the response everybody.
Thanx for the response everybody.
I just looked on Barnes web site and the load listed for the .222 says 1-14" twist right above the friggin reloading data and if 1-14" won't stabilize them why would they list the load data when every factory .222 and .22-250 is 1-14". If you look at the data the * denotes a load that won't stabilize in 1-14"and there is no * on the .222 load. The TSX bullet is .798" long and the 50grn V-Max is.780 .019" difference in length and the 53grn Matchking is .022" difference in overall length so I have trouble believing the bullet is to long along with the fact that my 1-14" 22-250 shot them fine. What I am going to check is the actual depth of the rifling on the BSA vs Model 70 as I am wondering if the shorter bearing surface of the TSX is causing some of the problem in the .222 (ie stripping the bullet?). I was hoping someone had a simular problem. Could the extra speed (700fps)of the 22-250 be stabilizing the bullet by increasing the RPM's of the bullet in fight?
