Any reason you want heavier bullets? If range and BC aren’t an issue you’ll get more explosive results with lighter bullets traveling faster. The 8 twist is a non issue, I’ve never seen one that wouldn’t shoot light bullets due to twist.
Any of the 40-55gr Varmageddon, Vmax, Ballistic tip, poly tipped varmint bullets with give dramatic results at close to medium ranges.
If you’re stretching the range the 77TMKs have been impressive in their terminal performance for me. They do not behave like varmint bullets however as they tend to expand and penetrate deeply as opposed to coming completely apart.
