I purchased a Marlin 336 in .38-55 and am planning on using Beartooth 250gr. G.Ck. bullets. My questions are 1) what diameter would you have them sized to using the Marlin ? 2) to what pressure can the 336 bre loaded to? As of late I've seen a number of articles that say using the 336 one should be able to get a 250gr. bullet up to 2000 fps. but the only load I've seen is one using H322 and a velocity of approx. 1830 fps. Any help would be greatly appreciated. Thanks.