Hi guys, I load for a mate who has a Tikka T3 varmint in .243. I previously worked up some accurate loads for him using Swift Scirroco II 90gr and Nosler Ballistic Tips in 80gr and 90gr. However, the rifle seems to have fallen out of love with them and accuracy has deteriorated to unacceptable levels. Mate assures me he cleans it properly (going to clean it myself before next session to be sure) and it has had no more than 1,000 rounds through it. I tried 80gr and 90gr Speer Deep Curls at the weekend with equally dire results. I also tried 90gr Accubonds with lightly better results but these were the best of a bad bunch and still 2"+ group compared to < 1" which it was doing easily in the past.
I'm beginning to wonder if there is something wrong with the rifle or am losing my touch. Have any of you had similar experiences or have any suggestions, please?