I recently picked up a MAR177 to practice with during the off-season. I wanted some targets to mimic the SR-1 target at 12 feet but I could not find a commercial target that would be the right size, so I made one.
The math isn’t as complicated as it seems. Take the distance you want and divide by the distance of the target you are reducing. In this case 12/300 (feet) which is .04 then multiply that by the size of the target you are trying to reduce.
The black of a SR-1 target is around 6.5 which reduces to about .25
The formula looks something like this.
X = the distance you are reducing the target for.
Y = the distance the target you are reducing is designed for.
Z = size of target you are reducing.
Here’s the “Worksheet” I made with several 12 feet targets Download Here
Several years ago Crosman introduced the MAR177 upper. It’s a match grade A4 style upper that fits on a standard AR-15 lower. The advantage, to me, is this upper fits on the same lower I use for High Power. So it has the same weight, same Geissele national match trigger, and overall feel as the rifle I use for High Power.
As far as the upper itself, i’ts solid and easy to use. It comes with a ten round magazine (they call it a clip). I use a single feed tray as I intend to practice mostly on slow fire off-hand. It is not semi auto so there is an AR-15 style charging handle which is pulled between shots to reset the trigger and air system.
The MAR177 is a Pre-Charged Pneumatic (PCP) so it has an on-board air tank that needs to be charged with either a pump, a scuba tank, or a special compressor. I picked up a Benjamin hand pump which resembles a bicycle pump. While cocking a Red Rider BB gun between each shot, filling the tank using this pump can be a bit of a work out. I figure that I can work on my upper body strength and my off hand at the same time.
I intend to use this to get some indoor trigger time over the winter break before the spring matches (tomorrow’s high is 12 degrees). Since a trip to the range tends to eat up the better part of the day, the MAR177 allows me to squeeze a few rounds in any time I can spare a few minutes. This should cut down on the excuses I make about my lack of practicing.
While I do not intend to take it to any air rifle matches, at least not just yet, I impressed with its performance during some quick range time this evening.
This wouldn’t be a fair review if I did not mention the out of the box issue I had with the MAR177. Upon delivery the upper would not hold a charge meaning there was a leak behind the gauge. However, I contacted Crosmen who responded within 30 minutes with a shipping label. They had it replaced and back to me working 100% in 8 days round trip. Which frankly is better than the service I have received from some well regarded firearms manufactures. Despite the out of the box issue I had, I would not hesitate to recommend this upper to anyone looking to get some more trigger time.