I ran the 129gr ABLR through my Creedmoor to verify performance both near and far today. It did well, just as I expected. The 142gr ABLR I only ran slow today. I'll let my 6.5WSM push it for the fast load since it'll be 400fps faster. I think the 129 is perfect out of the Creedmoor but might be a tad light for the magnums. 142gr ABLR looks to be some what more capable in the magnums. If I can find some Trailboss I'll test them even slower but I think they'll do just fine down to 1300fps as advertised.