Have long time experience with big bore hunting rifles, reloading, and general shooting. However, new to the medium bore long range avocation. Have a chance to aquire a new 338-378 Accumark. What are your opinions regarding this rifle and accuracy potential? If this is a good starting point in your opinion: 1) Does the factory trigger lend itself to acceptable adjustment or should it be changed? 2) Should a picatinny one piece scope base be used on this rifle or would Burris Signature(inserts) dual dovetail mounts be appropriate? Thanks for any info. Regards.