Will someone please educate me and explain the purpose of a front tube on a rimfire tuner?
Thank you in advance...
Like Tony said, experience varies.
I think they do just two things, being the 1st much more pronounced than the 2nd...
1st - more weight
2nd - some wind protection
I have used one with great success when I shot RWS R50. In fact, it was the only way I get to tune my rifle to those bullets.
When I start shooting Lapua, on the contrary, I never get a correct tune with them, so I stop using the front tubes.
See, you have to try, and decide for yourself.
Serious rimfire benchrest shooters have a huge number of options for what they can hang off of the fronts of their barrels and slide or clamp on behind it. My feeling is that many can afford to try many things and stick with what works, less of an engineering exercise than cut and try.