I started deburring my flash holes on my 338edge brass and know my exbal chart is off. it looks like my speed has picked up a lot. i was using 8 moa for 500yrd before but now I'm only using 7.25moa for 500. could this make make that big of a difference???? every thing else is the same that i have used with this rifle for the past year and i had it dead on out too 1300 using this exbal chart. the only difference is the flash hole. i guess if this is the case i can lower my charge a little maybe to get it back where it was i hope. i was running 93.5 h-1000 fed 215gm @ 2919 with bug hole groups at 100 hate to change it. any ideas????????????