My 35 Whelen AI was built on a M70 crf action,25" ER Shaw barrel. So far my fps gain has been about 150fps and I havent had to trim cases yet.My buddy has a std.35 Whelen he has to trim every 2nd loading.He is going to have it rechambered.
Katahdin,
Thanks for responding. Who did the chambering work for you? Also, have you checked point of impact based on 100yd zero versus the std?