243 barrel twist

[johnnyjr]

I'm thinking about getting a heavier barrel for my 243. I intend to use it for cast bullets only. Anywhere from 80 to 100 grain. What do you all think would be the best twist rate? Thanks

 

[CWLONGSHOT]

Factory 1:10 will do you just fine.

CW

 

[CZ93X62]

The 243 has been very successful for 68 years using a 1-10" twist. It is difficult to argue with success, and with the way Winchester stole Remington's lunch over the 244 Rem's 1-12" twist and the 6mm Rem's 1-9"or 4 turns/meter.

 

[BudHyett]

My Ruger #1B in 6mm Remington likes the RCBS 243-095-SP and SAECO #243 (This mold casts heavy at 93 grains with Linotype alloy) sized .244 and LBT lube. My .243 Model 70 Varmint likes the same bullets.

 

[CZ93X62]

I have campaigned for over 20 years in 243 with that RCBS 6mm-95-SP that Bud mentioned and the Lyman #245496. I have a third design inbound from a member here to mess around with as well. The 243 has been the best small rifle castings caliber I have tried by a wide margin over the 22s, 25s, and 6.5mms.

 

[CWLONGSHOT]

I have campaigned for over 20 years in 243 with that RCBS 6mm-95-SP that Bud mentioned and the Lyman #245496. I have a third design inbound from a member here to mess around with as well. The 243 has been the best small rifle castings caliber I have tried by a wide margin over the 22s, 25s, and 6.5mms.

My Ruger #1B in 6mm Remington likes the RCBS 243-095-SP and SAECO #243 (This mold casts heavy at 93 grains with Linotype alloy) sized .244 and LBT lube. My .243 Model 70 Varmint likes the same bullets.

Good ta know. I hopefully have acquired that RCBS mold.

CW

 

[quicksylver]

If'n it were me, for cast bullets , I'd go with the slowest rate possble , maybe a 12, might be way off ,but IMO cast likes slow.