Borch

I don't believe the .665 is rated for hevishot. The hevishot undertaker is around .675 I believe. So I won't try those and with just a few days left in his season switching loads and checking his pattern probably isn't an option.

It's amazing what a big different 5 yards make once you get out beyond 30 yards. It amazes me every spring that I spend at the patterning board testing out loads. I wouldn't press it much past where you patterned it at 35.

My son's winchester with the undertaker really likes #6 shot and nothing else. Believe me when I say I've put many rounds through it to check this out. He's getting 50+ head neck hits(15-22 bone hits) at 40 yards with it. Personally I won't push it past that mark with the HV #6 due to retained energy.

I guess what I'm getting at is you really won't know unless you check it out yourself in your gun. You either need to hit the pattern board or call them within 35 yards in my opinion.

Good Luck!