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Discussion Starter #1
Hello All:
Id like to mount my Lyman 438 scope on my Remington 521-T. To do that I will need to drill and tap the rifle.... My question is, how does one pick the correct base heights?
 

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I assume you mean to compensate for the barrel taper? Measure the barrel diameter at the two spots for the bases, subtract the smaller number from the larger. divide the result in half. That answer is the difference in base heights between the front and back bases
 

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Discussion Starter #3
I assume you mean to compensate for the barrel taper? Measure the barrel diameter at the two spots for the bases, subtract the smaller number from the larger. divide the result in half. That answer is the difference in base heights between the front and back bases
Oh...Yeah. That makes sense......;)
Thanks
 
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