I have a Remington 700, laminated thumbhole stock, stainless fluted bull barrel with a 1-12 twist. Scope is a Nikon Monarch 6X24. I am getting 1/4" groups with 50 gr v-max in front of 20.0 gr of h-4831. This will be nice for long range ground squirrels but I would like to try some heavier bullets to shoot out to 500 yrds or beyond at 'yotes or whatever. I know the 1-12 twist is not ideal for heavier bullets. Anybody shooting 60gr+ in this slow a twist? AM I constrained to 55gr max? any ideas I could try? Thanks!