243 Ackley 40 deg

[rdog]

I hope Bob 35 W does not see this post. I am thinking about re barrelling my Howa 1500 243 WIN to 243 Ackley using a stainless 1-9 twist bbl i have a Redding die set in 243 imp 40 deg . My concern is that it may not feed well out of the mag, due to the reduced case taper & 40 deg shoulder . do any of you have any Experience with the 243 Ackley? in a Howa 1500 ?.

 

[BlueFlyer]

I hope this does not damage my reputation either, to admit that I recently rebarreled an Omark 44 in 243AI. I don't have to worry about feeding as that is a single shot action. The standard 243W shoulder diameter is 0.454" and the AI is 0.459, so 0.0025" in taper is not much difference. That is why Ackley was reluctant to look at the 243AI as he thought there was very little gain to be had.
The main advantage is improved case life by having the 40deg shoulder. And if I am going to build a rifle, then it is never going to be a factory cartridge.

 

[cash_tx]

It seems to me that the juice just isn't worth the squeeze. I'd be more inclined to just get a 6.5 Creedmoor and leave my 243's as-is.