I have a friend Deon who is also on the forum he has a 450 Rigby with a 22" barrrel hope he will chime in.
He got up to 2430fps with 480gr bullets so making it a 500gr bullet and subtracting 50FPS +- for the 2" shorter barrel you should be able to get to 2300fps as long as you hold on.
Full disclosure, I already have a 23” 458 Lott and I love it. However, I’ve always wanted a 450 Rigby to get a little bit more (especially with a 550 gr bullet, sectional density is .375!)
I’ve found a custom CZ 550 in 450 Rigby, but the dang thing only has a 20” barrel. I think that it would be pretty much exactly what I already have, and wouldn’t offer anything new. I would also need to invest in different reloading components, so it stinks but I don’t think it will give me what I am after, thanks for everyone’s comments/advice.
A 20” 450 wil do anything a 22” Lott will do(and more) at lower pressure.
I have a 458 Lott with a 22” barrel and on my Labrader chrony get 2250 with 500 gr bullets.
For me that enough to forget about more velocity. I believe the animal will not know the difference of another 50 or 100 feet. The 450 with a 550 will have greater momentum.
If it were me I would buy it and in today’s market if I did not like it put it up for sale. The key is to buy it right. Should be fun.
Afternoon, going to South Africa August 22 hunting with wife. will need your help with trophies. what information and how soon do you need it? went to the website and completed the form but seems i have negative energy or something with electronic communication often.
thanks for your help