30-378 barrel length

[Ozyboarhunter]

Hi all just purchased an accumark in 30-378 and sticking a new barrel on for some long range hog and deer busting.

Any sugguestions on optimum barrel length for this CAL? and what sort of twist would i be needing to shoot say 168-200 slugs.

any feedback is good feedback

i was after a 338am.. but now the 375 is out il sit on that for a while

[RockyMtnMT]

30" with a 10" twist will run to potential. Wouldn't go much shorter in order to burn all that powder.

Steve

[J E Custom]

Originally Posted by RockyMtnMT

30" with a 10" twist will run to potential. Wouldn't go much shorter in order to burn all that powder.

Steve

+1

Mine has a 29 3/8" (30" blank) and it about all you need unless you are going for max velocity
then a 32" to 34" is nessary with huge doses of 50 BMG.

J E CUSTOM

[Ozyboarhunter]

thx lads 32-34 inch adds about what 100fps?
also what sort of freebore do u have on your guns? as the wby factory free bore is huge.

[jake50]

I was told by GS custom bullets that u would need a 1-9 for the monlithic 160 -177 and a 1-8 for there 198 grners bullets. But if they didnt work out, what bullets would u use?? Then Berger quote for the 185 VLD a 1-12 NOW i am scratching my head. MAybe i will use a slingshot instead and wont worry about a twist.

[Ozyboarhunter]

bumpp

[LR3]

I added 30" 10twist Lilja (at his recommendatio) to mine and get regular 6-7 inch groups at 1000 yes but found 240smk was more accurate than 175 200 and 210s